2003 Infiniti QX4 Engine Parts
Find Your Specific 2003 Infiniti QX4 Engine Parts
Below you will find various in-demand Infiniti Engine Parts, components and accessories for your 2003 QX4. Advance Auto Parts has popular QX4 parts like Engine Timing Parts, Camshafts, Engine Gaskets and Seals and more. You’ll also find aftermarket and OEM Engine Parts for other QX4 model years including
1997,
1998,
1999,
2000,
2001,
2002 and more. Select a category of 2003 Infiniti QX4 Engine Parts below and start saving instantly.
Popular 2003 Infiniti QX4 Engine Parts Categories
Essential Engine Parts for 2003 Infiniti QX4s
Hitachi – Engine Water Pump (Part No.OUP0025)
from
$108.99
Designed to meet the exact needs of each specific vehicle, Hitachi’s Engine Oil Pumps are OE quality.
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Product Features:
- Hitachi is a Tier 1 OE supplier for Engine Oil Pumps
- Hitachi is a Tier 1 OE supplier for Engine Oil Pumps
- 100% NEW, never remanufactured
- Meets the OE performance and durability standards for this application
- Cast aluminum housing with machined steel internals results in lightweight, durability, and high thermal efficiency
- Precision machined internals and housing for efficient flow and optimal pressure throughout the lubrication system
- Designed to reduce friction; Keeps the engine running cool.
Dorman – Engine Oil Pan: Direct Fit, Steel (Part No.264-524)
from
$89.99
This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.
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Product Features:
- Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
- Complete assembly – includes replacement pan and drain plugs to match original components
- Durable design – high-strength coating prevents future corrosion
- Trustworthy value – backed by team of engineers and quality control experts in the United States
Carquest Premium – Engine Crankshaft Position Sensor (Part No.CSA1499)
from
$79.99
Carquest Premium crankshaft position sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium crankshaft and camshaft sensors are engineered with technology that provides increased output accuracy through a stronger, more consistent signal. Our sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium crankshaft and camshaft position sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
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Product Features:
- Engineered with technology that provides increased accuracy with a stronger, more consistent signal
- Sensors are based on proven hall effect and variable reluctance technology
- Includes OE-style brackets, hold downs, hardware, or spacers as needed for each application.
- O-rings and seals are included if required.
- Weather-tight connectors prevent leaks and corrosion for better reliability.
- Extensive design validation testing and 100% end-of-line tested.
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
MAHLE Original – Engine Coolant Water Bypass Gasket (Part No.C31682)
from
$1.99
MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.
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Product Features:
- All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
- MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
- MAHLE gaskets is the leader in Domestic, Asian and European applications
- The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
Carquest – Multi-Purpose Relay (Part No.83A1018)
from
$16.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
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Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- Computer-Aided Design (CAD), laser scanning and 3D printing ¿ utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) ¿ in the part design process ensures speed-to-market and a precise fit guaranteed.
- Computer-Aided Design (CAD), laser scanning and 3D printing ┐ utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) ┐ in the part design process ensures speed-to-market and a precise fit guaranteed.
- Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
- Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
Melling – Engine Oil Priming Tool (Part No.MPL-201)
from
$355.99
Made In USA. Melling Engine Oil Priming Tank was developed as a way for engine builders to safely pre-prime the engine with oil prior to initial engine startup. The priming tank, when filled with clean oil and air pressure pumps oil into all of the critical areas of the new engine quickly and safely.
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Cloyes Gear – Engine Timing Chain Guide (Part No.9-5439)
from
$15.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems. A timing chain guide serves as a guide (or track) for the timing chain, connecting the crankshaft and camshaft ensuring proper alignment and timing. Cloyes timing chain guides use the latest in design and material technology, ensuring quiet operation, durability that meet or exceed OEM performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
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Product Features:
- CAD designed and manufactured using premium materials for OE-level fit and function, allowing for smooth installation and reliable performance
- Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
- Available in application-specific kit or as a stand-alone product, offering installation flexibility and convenience
- Backed by Limited Lifetime Warranty and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component
- Refer to our online catalog for detailed application-specific information
Felpro – Fuel Injector O-Ring Kit (Part No.ES 70599)
from
$8.49
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
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Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Engineered for the sealing repair environment
- Unsurpassed quality you can trust
- Validated for fit, form, and function
National – Multi-Purpose Seal (Part No.223801)
from
$11.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
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Product Features:
- Design type: spring loaded; multi-lip
- Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
- Good low temperature capability
- Low swell in hydrocarbon fluids
- Delivers quality and reliable performance for every type of repair
Sealed Power – Engine Piston Ring Set (Part No.E-1010KC)
from
$98.99
Sealed Power parts provide innovative designs, use leading-edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
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Product Features:
- Chrome plated top ring facings for enhanced performance under demanding conditions
- Second rings seat instantly, properly control inter-ring pressure to improve cylinder sealing, provide efficient piston-to-cylinder heat transfer and aid in effective oil control
- Oil rings are unequalled at controlling oil; design keeps tension uniform while assuring a positive seal
- In the box: compression rings, rails and oil spacer
Sealed Power – Engine Assembly Lubricant (Part No.55-400)
from
$10.49
Sealed Power parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
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Product Features:
- Formulated for pre-lubrication cam lobes, lifters & engine bearings
- Increases load carrying capacity
- Holds fast to surfaces
- Exacting tolerances
- Meets or exceeds OEM specifications
- 4.0 oz. Squeeze Container
Driveworks – Oil Seal (Part No.S-223801)
Carquest Premium – Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10107)
from
$12.99
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.
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Product Features:
- Provides proper seal to ensure leak prevention
- Stops engine blow by
- High quality construction
- Meets all OEM specifications
Felpro – PermaTorque Engine Cylinder Head Gasket Set (Part No.HS 26219 PT-1)
from
$145.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
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Product Features:
- PROPRIETARY COATING – Nonstick anti-friction coating seals small surface scratches and imperfections
- SEALING TECHNOLOGIES – Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
- NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
- STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
- DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
Cloyes Gear – Engine Timing Chain (Part No.9-4207)
from
$71.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems. Our timing chains are built to synchronize crankshaft and camshaft rotation with absolute accuracy, ensuring precise valve timing and long-term engine performance. Available as stand-alone chains or in complete kits, Cloyes timing chains are manufactured from premium materials, heat-treated, pre-stressed and engineered for a perfect chain-to-sprocket tooth fit ¿ delivering quiet operation, durability, and OE-level performance you can count on. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
Product Features:
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Product Features:
- Pre-stressed and heat-treated steel construction for increased strength, and wear resistance, delivering long-term durability even in high-stress environments
- Cloyes chains are engineered and manufactured with precision pitch control to ensure optimal chain-to-sprocket fit reducing noise, minimizing fatigue, and maintaining accurate timing
- Designed in the USA and manufactured using premium materials for OE-level fit and function, allowing for smooth installation and reliable performance
- Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
- Available in application-specific kit or as a stand-alone chain, offering installation flexibility and convenience
- Backed by Limited Lifetime Warranty and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component
Felpro – Engine Crankshaft Seal Kit (Part No.BS 40631)
from
$47.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
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Product Features:
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
- Validated for fit, form, and function
Cloyes Gear – Engine Timing Crankshaft Sprocket (Part No.S885)
from
$29.99
Sprocket Made From High Alloy Material. Sprocket Teeth Are Heat Treated. Precision Tooth Form To Assure Proper Chain Engagement, And Precise Keyway To Tooth Timing.
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Product Features:
- Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
- Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
- CAD designed and manufactured using premium materials
- Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
- Refer to our online catalog for detailed application-specific information
Victor Reinz – Engine Cylinder Head Gasket (Part No.61-10702-00)
from
$36.99
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- Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
- Dana engineering-approved for fit, form and function
- Meets or exceeds OE specifications
Victor Reinz – Engine Camshaft Seal (Part No.81-53244-00)
from
$10.99
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- Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
- Dana engineering-approved for fit, form and function
- Meets or exceeds OE specifications
Felpro – TIMING COVER GASKET SET (Part No.TCS 45997)
from
$30.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
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Product Features:
- Timing cover set includes gaskets and seals necessary for timing chain/belt replacement job
- Application specific design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Validated for fit, form, and function
MAHLE Original – Engine Oil Cooler Seal (Part No.B32573)
from
$6.99
MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.
Product Features:
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Product Features:
- All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
- MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
- MAHLE gaskets is the leader in Domestic, Asian and European applications
- The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
Carquest Premium – Engine Variable Valve Timing (VVT) Solenoid (Part No.VVC1069)
from
$244.99
The variable valve timing (VVT) system allows the engine control module (ECM) to regulate the intake and exhaust valve phase angle providing the most optimal engine volumetric efficiency under all engine operating condition to control tailpipe emissions and engine efficiency. Variable valve timing is an emission control device and although there are various methods of operation, the typical device is regulated by oil control valves, actuator solenoids and camshaft phasers.
Product Features:
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Product Features:
- Precision-wound coated copper windings increase product durability and life cycle.
- Hard-coated and anodized spool valve to prevent corrosion and increase service life.
- Threaded mounting bolt, hardware, and/or gaskets where applicable for easy installation.
- Thermoplastic that is resistant to high temperatures, moisture, and chemicals.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure product reliability, every time.
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Melling – Stock Replacement Engine Assembly Lubricant, 4 oz. (Part No.M-10012)
from
$6.99
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- Superior Wear Protection – Formulated with extreme pressure additives to protect engine components from metal-to-metal contact during initial startup
- High Tackiness – Stays in place during assembly and storage, ensuring consistent lubrication exactly where it’s needed
- Broad Compatibility – Safe for use with all engine components including camshafts, lifters, bearings, and valve train parts
- Easy Startup Support – Reduces friction and prevents dry starts by providing instant lubrication during first engine fire-up
Anchor – Engine Mount: Front Left, Front Right, 1 Piece (Part No.8311)
from
$61.99
Anchor 8311 This mount supports the engine and dampen vibration. Each mount is specifically engineered and designed to OE standards. Natural and SBR rubber provide maximum life and performance. Steel fasteners are heat treated grade 5 bolts. A special bonding agent is used to ensure a rubber to metal bond. Rubber material is mixed to specific Durometer, hardness.
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Product Features:
- MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
- MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
- HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
- SUPERIOR BOND: A special Chemlok bonding agent is used to ensure a superior rubber-to-metal bond.
- HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
- For Years: 1996-2000
- Weight approx: 3 Lbs
Autotecnica – Valve Cover w/ Gasket, Left (Part No.NI1418457)
from
$192.99
Autotecnica offers high-quality aftermarket parts for a wide variety of Asian and North American passenger cars and trucks, include braking, cooling, driveline, electrical, engine, fuel, HVAC, steering, and suspension categories. Autotecnica is the smart choice. Whether you’re a DIY enthusiast or professional technician in need of replacement parts that meet OEM specifications, Autotecnica is an excellent alternative to expensive ¿Genuine¿ components.
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Product Features:
- Guaranteed fitment
- Cracked valve covers can create troublesome vacuum leaks and allow leaking oil to damage engine components
- URO Parts’ replacement valve covers are precisely manufactured to OE dimensions for easy installation and maximum protection of valvetrain
- Durable high-quality metal or plastic material is corrosion-resistant and withstands oil vapor and intense engine heat
Felpro – Engine Oil Pan Gasket Set – RTV Black silicone with Rubber end seals (Part No.OS 30591)
from
$26.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
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Product Features:
- DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
- ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
- SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
- EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
- REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road
Spartan – Engine Cylinder Head; Nissan VG33E RIGHT Head (Part No.2342R)
from
$763.99
Remanufactured Cylinder Heads are complete rebuild & include new valve stem seals, soft plugs & verified camshafts. All threads are checked and repaired if necessary. Cylinder Heads are packaged in heavy plastic to protect the unit.
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Product Features:
- All cylinder heads are both vacuum and pressure tested to verify valve seating, & integrity of water passages.
- All cylinder heads are packaged in environmentally safe and recyclable containers that are the perfect size for returning your original core
- All threads and machined surfaces are and repaired with technology that exceeds the original metal
- Non-sealing iron surfaces painted to prevent oxidization
Driveworks – Oil Seal (Part No.S-224663)
from
$5.99
Value-priced seal meets all cataloged application requirements.
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Product Features:
- Brand may vary by location
Upgrade your 2003 Infiniti QX4 with Top-Quality Engine Parts
When it comes to maintaining or upgrading your 2003 Infiniti QX4, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Infiniti or enhancing its overall performance, Engine Parts are key to keeping your QX4 functioning at its best. At Advance Auto Parts, we offer a wide selection of 58 Engine Parts for the 2003 Infiniti QX4, designed to meet your needs without breaking the bank.
From
Engine Timing Part
replacements to
Camshafts
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Engine Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Engine Parts for your 2003 Infiniti QX4 at great prices.
Our Engine Parts inventory for this model
ranges from just $1.99 to $661.99, with
an average price of $89.68.
Our 58 Engine Parts in stock come from 18 trusted brands, so you’re sure to find the right part for your 2003 Infiniti QX4 without overspending.
Top Brands and High Customer Satisfaction
Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 Infiniti QX4, we stock popular OEM and aftermarket Engine Parts from top names
like Felpro, Mahle, Driveworks, and more.
Felpro Engine Parts
start at just $8.49 and boast an impressive 4.6 stars average rating from customers.
Mahle and Driveworks also bring quality to the table, with Engine Parts available starting at $5.99, and at an average 4.5 stars rating.
With 196 customer reviews and counting, our 2003 Infiniti QX4 Engine Parts have a strong track record of reliability, ensuring you can trust your purchase.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Engine Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants
and more to make sure your 2003 Infiniti QX4 is always ready to roll. We’re committed to providing you with everything you need to keep your QX4 in top shape, all in one place.
Start shopping confidently below for your 2003 Infiniti QX4!
Best-Selling Engine Timing Parts for 2003 Infiniti QX4s
Enhance the driving experience in your Infiniti with 14 quality Engine Timing Part components, starting at $5.99.
Driveworks – Oil Seal (Part No.S-224663)
from
$5.99
Value-priced seal meets all cataloged application requirements.
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Product Features:
- Brand may vary by location
Cloyes Gear – Engine Timing Chain Tensioner (Part No.9-5589)
from
$91.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems, delivering premium-quality solutions. A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design and application, Cloyes engine timing chain tensioners can use spring tension or hydraulic pressure to properly tension the chain for optimal performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading limited Warranty and technical support.
Product Features:
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Product Features:
- CAD designed and manufactured using premium materials and heat-treated for OE-level fit and function, allowing for smooth installation and reliable performance
- Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
- Available in application-specific kit or as a stand-alone product, offering installation flexibility and convenience
- Backed by Limited Lifetime Warranty and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component
- Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience
- Right hand Secondary Tensioner
Carquest Premium – Engine Variable Valve Timing (VVT) Solenoid (Part No.VVC1069)
from
$244.99
The variable valve timing (VVT) system allows the engine control module (ECM) to regulate the intake and exhaust valve phase angle providing the most optimal engine volumetric efficiency under all engine operating condition to control tailpipe emissions and engine efficiency. Variable valve timing is an emission control device and although there are various methods of operation, the typical device is regulated by oil control valves, actuator solenoids and camshaft phasers.
Product Features:
See More
Product Features:
- Precision-wound coated copper windings increase product durability and life cycle.
- Hard-coated and anodized spool valve to prevent corrosion and increase service life.
- Threaded mounting bolt, hardware, and/or gaskets where applicable for easy installation.
- Thermoplastic that is resistant to high temperatures, moisture, and chemicals.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure product reliability, every time.
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Carquest Premium – Engine Variable Valve Timing (VVT) Solenoid (Part No.VVC1079)
from
$292.99
The variable valve timing (VVT) system allows the engine control module (ECM) to regulate the intake and exhaust valve phase angle providing the most optimal engine volumetric efficiency under all engine operating condition to control tailpipe emissions and engine efficiency. Variable valve timing is an emission control device and although there are various methods of operation, the typical device is regulated by oil control valves, actuator solenoids and camshaft phasers.
Product Features:
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Product Features:
- Precision-wound coated copper windings increase product durability and life cycle.
- Hard-coated and anodized spool valve to prevent corrosion and increase service life.
- Threaded mounting bolt, hardware, and/or gaskets where applicable for easy installation.
- Thermoplastic that is resistant to high temperatures, moisture, and chemicals.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure product reliability, every time.
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Cloyes Gear – Engine Timing Chain Tensioner (Part No.9-5588)
from
$91.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems, delivering premium-quality solutions. A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design and application, Cloyes engine timing chain tensioners can use spring tension or hydraulic pressure to properly tension the chain for optimal performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading limited Warranty and technical support.
Product Features:
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Product Features:
- CAD designed and manufactured using premium materials and heat-treated for OE-level fit and function, allowing for smooth installation and reliable performance
- Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
- Available in application-specific kit or as a stand-alone product, offering installation flexibility and convenience
- Backed by Limited Lifetime Warranty and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component
- Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience
- Left Hand Secondary Tensioner
Cloyes Gear – Engine Timing Chain (Part No.9-4207)
from
$71.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems. Our timing chains are built to synchronize crankshaft and camshaft rotation with absolute accuracy, ensuring precise valve timing and long-term engine performance. Available as stand-alone chains or in complete kits, Cloyes timing chains are manufactured from premium materials, heat-treated, pre-stressed and engineered for a perfect chain-to-sprocket tooth fit ¿ delivering quiet operation, durability, and OE-level performance you can count on. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
Product Features:
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Product Features:
- Pre-stressed and heat-treated steel construction for increased strength, and wear resistance, delivering long-term durability even in high-stress environments
- Cloyes chains are engineered and manufactured with precision pitch control to ensure optimal chain-to-sprocket fit reducing noise, minimizing fatigue, and maintaining accurate timing
- Designed in the USA and manufactured using premium materials for OE-level fit and function, allowing for smooth installation and reliable performance
- Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
- Available in application-specific kit or as a stand-alone chain, offering installation flexibility and convenience
- Backed by Limited Lifetime Warranty and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component
Hitachi – Engine Variable Valve Timing (Vvt) Solenoid (Part No.VTS0007)
from
$216.99
Hitachi’s Variable Timing Control Cover Assembly is an aluminum cover that contains the Variable Timing Solenoid valve. This cover mounts to the engine’s Timing Chain Case Front Cover, which encapsulates the Variable Timing Gear (Camshaft Phasor). The Variable Timing Conntrol Assembly main function is to control oil pressure to the camshaft phasors (camshaft sprockets), which control the engine’s valve timing. The camshaft phasors (Variable Timing Gear) are mounted to the camshaft.
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Product Features:
- Meets the OE performance and durability standards for this application
- Meets the OE performance and durability standards for this application
- Additional O-ring located in the solenoid housing prevents water from damaging electrical components
- Optimally designed electromagnet requires less energy to maintain operating positions
- Precision machined ports and high-quality seals create less pressure drop
- Hitachi’s Variable Timing Solenoid (VTSs) precisely regulate oil flow to the Variable Timing Gear to allow the engine to adjust timing for optimal performance and fuel economy. Our VTS have a(n) optimally designed electromagnet(s) requiring less energy to
Cloyes Gear – Engine Timing Chain Tensioner (Part No.9-5436)
from
$74.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems, delivering premium-quality solutions. A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design and application, Cloyes engine timing chain tensioners can use spring tension or hydraulic pressure to properly tension the chain for optimal performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service.
Product Features:
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Product Features:
- CAD designed and manufactured using premium materials and heat-treated for OE-level fit and function, allowing for smooth installation and reliable performance
- Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
- Available in application-specific kit or as a stand-alone product, offering installation flexibility and convenience
- Backed by Limited and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component
- Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience
Cloyes Gear – Engine Timing Camshaft Sprocket (Part No.S886)
from
$45.99
Sprocket Made From High Alloy Material. Features Precision Tooth Form To Assure Proper Chain Engagement, And Is Balanced For Proper Timing.
Product Features:
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Product Features:
- Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
- Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
- CAD designed and manufactured using premium materials
- Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
- Refer to our online catalog for detailed application-specific information
Cloyes Gear – Engine Timing Chain Tensioner Guide (Part No.9-5437)
from
$37.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems. A timing chain tensioner guide serves as a guide (or track) for the timing chain and applies tension to the system, connecting crankshaft and camshaft ensuring proper alignment and timing. Cloyes timing chain guides use the latest in design and material technology, ensuring quiet operation, durability and that meet or exceed OEM performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
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Product Features:
- CAD designed and manufactured using premium materials and heat-treated for OE-level fit and function, allowing for smooth installation and reliable performance
- Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
- Available in application-specific kit or as a stand-alone product, offering installation flexibility and convenience
- Backed by Limited Lifetime Warranty and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component
Cloyes Gear – Engine Timing Crankshaft Sprocket (Part No.S885)
from
$29.99
Sprocket Made From High Alloy Material. Sprocket Teeth Are Heat Treated. Precision Tooth Form To Assure Proper Chain Engagement, And Precise Keyway To Tooth Timing.
Product Features:
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Product Features:
- Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
- Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
- CAD designed and manufactured using premium materials
- Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
- Refer to our online catalog for detailed application-specific information
Schaeffler – General Seal (Part No.SS3780)
from
$17.29
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.
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Product Features:
- High-precision and High-quality components used in all KITs
- Coverage of classic and new high-tech solutions for the best system coverage
Cloyes Gear – Engine Timing Chain Guide (Part No.9-5440)
from
$15.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems. A timing chain guide serves as a guide (or track) for the timing chain, connecting the crankshaft and camshaft ensuring proper alignment and timing. Cloyes timing chain guides use the latest in design and material technology, ensuring quiet operation, durability that meet or exceed OEM performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service.
Product Features:
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Product Features:
- CAD designed and manufactured using premium materials for OE-level fit and function, allowing for smooth installation and reliable performance
- Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
- Available in application-specific kit or as a stand-alone product, offering installation flexibility and convenience
- Backed by Limited and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component
- Refer to our online catalog for detailed application-specific information
Cloyes Gear – Engine Timing Chain Guide (Part No.9-5439)
from
$15.99
Since 1921, Cloyes has been the trusted leader in automotive timing systems. A timing chain guide serves as a guide (or track) for the timing chain, connecting the crankshaft and camshaft ensuring proper alignment and timing. Cloyes timing chain guides use the latest in design and material technology, ensuring quiet operation, durability that meet or exceed OEM performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
Product Features:
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Product Features:
- CAD designed and manufactured using premium materials for OE-level fit and function, allowing for smooth installation and reliable performance
- Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
- Available in application-specific kit or as a stand-alone product, offering installation flexibility and convenience
- Backed by Limited Lifetime Warranty and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component
- Refer to our online catalog for detailed application-specific information
Most Popular 2003 Infiniti QX4 Camshafts
Customize your Infiniti with 4 Camshafts products
like Camshaft Position Sensors,
Camshaft Seals, and
Camshaft Lubes, all
priced under $78.99.
National – Shaft Repair Sleeve (Part No.99166)
from
$34.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
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Product Features:
- Designed to repair damaged, grooved or worn shafts
- Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
- Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
- Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
- Easy to install with removable flange and installation tool
Carquest Premium – Engine Camshaft Position Sensor (Part No.CSA1477)
from
$53.99
Carquest Premium camshaft position sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium crankshaft and camshaft sensors are engineered with technology that provides increased output accuracy through a stronger, more consistent signal. Our sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium crankshaft and camshaft position sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
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Product Features:
- Engineered with technology that provides increased accuracy with a stronger, more consistent signal
- Sensors are based on proven hall effect and variable reluctance technology
- Includes OE-style brackets, hold downs, hardware, or spacers as needed for each application.
- O-rings and seals are included if required.
- Weather-tight connectors prevent leaks and corrosion for better reliability.
- Extensive design validation testing and 100% end-of-line tested.
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
Dorman – Magnetic Camshaft Position Sensor (Part No.907-739)
from
$78.99
This engine camshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.
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Product Features:
- Direct replacement – this engine camshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
- Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
- Durable construction – designed and manufactured to strict specifications for reliable performance
- Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
Melling – Stock Replacement Engine Assembly Lubricant, 4 oz. (Part No.M-10012)
from
$6.99
Product Features:
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- Superior Wear Protection – Formulated with extreme pressure additives to protect engine components from metal-to-metal contact during initial startup
- High Tackiness – Stays in place during assembly and storage, ensuring consistent lubrication exactly where it’s needed
- Broad Compatibility – Safe for use with all engine components including camshafts, lifters, bearings, and valve train parts
- Easy Startup Support – Reduces friction and prevents dry starts by providing instant lubrication during first engine fire-up
Top Picks for 2003 Infiniti QX4 Engine Gaskets and Seals
Upgrade Infiniti QX4s with top-quality Engine Gaskets and Seals parts, including 14 OEM and aftermarket selections for your 2003 model.
Felpro – Engine Oil Pan Gasket Set – RTV Black silicone with Rubber end seals (Part No.OS 30696)
from
$20.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
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Product Features:
- DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
- ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
- SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
- EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
- REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road
MAHLE Original – Engine Valve Cover Gasket (Part No.VS50371SL)
from
$17.99
MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.
Product Features:
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Product Features:
- All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
- MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
- MAHLE gaskets is the leader in Domestic, Asian and European applications
- The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
Dorman – Fuel Pump Lock Ring (Part No.579-051)
from
$25.99
This fuel tank sending unit gasket is designed to match the fit and function of the original gasket on specified vehicles, and is engineered for durability and reliable performance.
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Product Features:
- Direct replacement – this fuel tank sending unit gasket is designed to match the fit and function of the original gasket on specified vehicles
- Restores functionality – this gasket is made to fit and fully restore part functionality after the original gasket fails
- Durable construction – this part is made from quality materials to ensure reliable performance and long service life
- Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
Felpro – Engine Valve Cover Gasket Set (Part No.VS 50608 R)
from
$35.99
Product Features:
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- DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
- ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
- SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
- EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
- REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road
MAHLE Original – Engine Oil Cooler Seal (Part No.B32573)
from
$6.99
MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.
Product Features:
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Product Features:
- All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
- MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
- MAHLE gaskets is the leader in Domestic, Asian and European applications
- The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
Felpro – TIMING COVER GASKET SET (Part No.TCS 45997)
from
$30.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
Product Features:
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Product Features:
- Timing cover set includes gaskets and seals necessary for timing chain/belt replacement job
- Application specific design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Validated for fit, form, and function
Felpro – Engine Crankshaft Seal Kit (Part No.BS 40631)
from
$47.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
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Product Features:
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
- Validated for fit, form, and function
MAHLE Original – Engine Valve Cover Gasket (Part No.VS50371SR)
from
$16.99
MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.
Product Features:
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Product Features:
- All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
- MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
- MAHLE gaskets is the leader in Domestic, Asian and European applications
- The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
Felpro – Engine Valve Stem Oil Seal Set (Part No.SS 72821)
from
$50.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
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Product Features:
- RIGHT TYPE – Valve stem seals designs are application-specific for the repair occasion using either deflector (umbrella) seals, O-ring style or positive seals
- QUALITY MATERIALS – Each valve stem seal features materials based on the specific application for your vehicle repair
- ENGINEERING EXPERTISE – Parts are reviewed, validated and approved by Fel-Pro engineers through rigorous research, development and testing
- INSTALLATION AID – Installation tool included to protect inner lip of seal from damage during seal installation
- COVERAGE – Available for domestic and foreign nameplate vehicles
Felpro – Engine Oil Cooler Seal (Part No.73233)
from
$10.49
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
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Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Includes all parts needed to complete the repair
MAHLE Original – Engine Coolant Water Bypass Gasket (Part No.C31682)
from
$1.99
MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.
Product Features:
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Product Features:
- All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
- MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
- MAHLE gaskets is the leader in Domestic, Asian and European applications
- The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
Victor Reinz – Molded Rubber Valve Cover Gasket Set: Direct Fit, 2 Pieces (Part No.15-10107-01)
from
$39.99
Oil drops on the driveway are a distant memory thanks to sophisticated engine valve cover and gasket designs. Victor Reinz is at the forefront of engineering the latest sealing technology. Although the primary task of valve cover gaskets is to seal oil and oil spray, they must withstand high temperatures brought on by nearby exhaust manifolds, exhaust crossovers in the cylinder heads, and EGR systems. Victor Reinz valve cover gaskets deliver the quality materials you demand. Where appropriate, Victor Reinz valve cover gaskets are designed with compression limiters to prevent over-torquing, splitting, or the need to retorque.
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Product Features:
- Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
- Application specific molded rubber construction
- Engineered cross section
- Dana engineering-approved for fit, form and function
Victor Reinz – Engine Oil Pan Gasket Set (Part No.19-10205-01)
from
$23.99
Product Features:
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- Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
- Dana engineering-approved for fit, form and function
- Meets or exceeds OE specifications
Victor Reinz – RTV Silicone (Part No.70-31414-10)
from
$9.99
Product Features:
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- Resistant to temperatures from -58 Deg. F to 482 Deg. F, and briefly up to 572 Deg. F (-50 Deg. C to 250 Deg. C, briefly to 300 Deg. C)
- Insignificant shrinkage and loss of mass even in high-heat environments
- Fast-curing, low-odor, noncorrosive (pH neutral, non-acidic, non-oxidizing), and will not harm oxygen sensors
- Sealing gap 0.006 in (0.15 mm)
In-Demand Valve Cover and Cylinder Heads for 2003 Infiniti QX4s
Select from 7 premium Valve Cover and Cylinder Heads parts for your 2003 Infiniti QX4, with prices ranging from $57.99 to $661.99.
Felpro – Engine Cylinder Head Bolt Set (Part No.ES 72900)
from
$57.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
Product Features:
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Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Avoid risk associated with re-use of T-T-Y (torque to yield) head bolts
- Validated for fit, form and function
- Unsurpassed quality you can trust
Felpro – PermaTorque Engine Cylinder Head Gasket Set (Part No.HS 26241 PT)
from
$147.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
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Product Features:
- PROPRIETARY COATING – Nonstick anti-friction coating seals small surface scratches and imperfections
- SEALING TECHNOLOGIES – Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
- NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
- STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
- DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
Spartan – Engine Cylinder Head; Nissan VQ35DE 00-04 Right Head (Part No.2344R)
from
$661.99
Remanufactured Cylinder Heads are complete rebuild & include new valve stem seals, soft plugs & verified camshafts. All threads are checked and repaired if necessary. Cylinder Heads are packaged in heavy plastic to protect the unit.
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Product Features:
- All cylinder heads are both vacuum and pressure tested to verify valve seating, & integrity of water passages.
- All cylinder heads are packaged in environmentally safe and recyclable containers that are the perfect size for returning your original core
- All threads and machined surfaces are and repaired with technology that exceeds the original metal
- Non-sealing iron surfaces painted to prevent oxidization
Spartan – Engine Cylinder Head; Nissan VQ35DE 00-04 Left Head (Part No.2344L)
from
$661.99
Remanufactured Cylinder Heads are complete rebuild & include new valve stem seals, soft plugs & verified camshafts. All threads are checked and repaired if necessary. Cylinder Heads are packaged in heavy plastic to protect the unit.
Product Features:
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Product Features:
- All cylinder heads are both vacuum and pressure tested to verify valve seating, & integrity of water passages.
- All cylinder heads are packaged in environmentally safe and recyclable containers that are the perfect size for returning your original core
- All threads and machined surfaces are and repaired with technology that exceeds the original metal
- Non-sealing iron surfaces painted to prevent oxidization
Autotecnica – Valve Cover w/ Gasket, Left (Part No.NI1418457)
from
$192.99
Autotecnica offers high-quality aftermarket parts for a wide variety of Asian and North American passenger cars and trucks, include braking, cooling, driveline, electrical, engine, fuel, HVAC, steering, and suspension categories. Autotecnica is the smart choice. Whether you’re a DIY enthusiast or professional technician in need of replacement parts that meet OEM specifications, Autotecnica is an excellent alternative to expensive ¿Genuine¿ components.
Product Features:
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Product Features:
- Guaranteed fitment
- Cracked valve covers can create troublesome vacuum leaks and allow leaking oil to damage engine components
- URO Parts’ replacement valve covers are precisely manufactured to OE dimensions for easy installation and maximum protection of valvetrain
- Durable high-quality metal or plastic material is corrosion-resistant and withstands oil vapor and intense engine heat
Autotecnica – Valve Cover w/ Gasket, Right (Part No.NI1418458)
from
$192.99
Autotecnica offers high-quality aftermarket parts for a wide variety of Asian and North American passenger cars and trucks, include braking, cooling, driveline, electrical, engine, fuel, HVAC, steering, and suspension categories. Autotecnica is the smart choice. Whether you’re a DIY enthusiast or professional technician in need of replacement parts that meet OEM specifications, Autotecnica is an excellent alternative to expensive ¿Genuine¿ components.
Product Features:
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Product Features:
- Guaranteed fitment
- Cracked valve covers can create troublesome vacuum leaks and allow leaking oil to damage engine components
- URO Parts’ replacement valve covers are precisely manufactured to OE dimensions for easy installation and maximum protection of valvetrain
- Durable high-quality metal or plastic material is corrosion-resistant and withstands oil vapor and intense engine heat
Felpro – PermaTorque Engine Cylinder Head Gasket (Part No.26241 PT)
from
$60.99
Product Features:
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- PROPRIETARY COATING – Exclusive coating helps withstand rougher sealing surface finishes up to 80 Ra
- SUPERIOR SEAL – Precise embossed sealing beads at all vital areas to eliminate leak paths
- MULTI-LAYERED STEEL CONSTRUCTION – Multiple layers of stainless steel maintain sealing stress and accommodate head lift
- UNIQUE COMBUSTION SEAL – Accommodates high cylinder pressures and head movement encountered with engines
- DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
Most Sold 2003 Infiniti QX4 Engine Mounts
Explore our best-selling Infiniti parts for the 2003 QX4 among 1 OEM and aftermarket options starting from $81.99.
Anchor – Engine Mount: Front Left, Front Right, 1 Piece (Part No.9408)
from
$81.99
Anchor 9408 This mount supports the engine and dampen vibration. Each mount is specifically engineered and designed to OE standards. Natural and SBR rubber provide maximum life and performance. Steel fasteners are heat treated grade 5 bolts. A special bonding agent is used to ensure a rubber to metal bond. Rubber material is mixed to specific Durometer, hardness.
Product Features:
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Product Features:
- MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
- MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
- HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
- SUPERIOR BOND: A special Chemlok bonding agent is used to ensure a superior rubber-to-metal bond.
- HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
- For Years: 2000-2004
- Weight approx: 4 Lbs
Top-Rated Engine Parts Brands For Your 2003 Infiniti QX4
Shop for the best-rated brands offering Engine Parts and other products for your 2003 Infiniti QX4s. Below you’ll find some of our best rated Engine Parts from Felpro, Mahle, and Driveworks, and more. Engine Parts from these brands that fit a 2003 QX4 start at just $5.99 and are rated as high as 4.6 stars. OEM and aftermarket Engine Parts don’t get more top quality, durable, and affordable than from the brands below.
Popular Felpro 2003 Infiniti QX4 Engine Parts
When it comes to maintaining or upgrading your 2003 Infiniti QX4, using quality Engine Parts is essential to ensure durability and a perfect fit. Felpro ticks all of those boxes. We offer a wide selection of Felpro Engine Parts, specifically designed for the 2003 Infiniti QX4. With over 3 Felpro brand Engine Parts in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $8.49, with an average price of just $21.82. Plus, with over 166 customer reviews and an average rating of 4.6 stars, you can trust that our Felpro Engine Parts will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
Popular Mahle 2003 Infiniti QX4 Engine Parts
Mahle auto parts is one of the highest quality Engine Part brands in the market. Any 2003 Infiniti QX4 owner should feel confident when installing genuine Mahle parts in their vehicle. To ensure the best fit and performance for your 2003 QX4, Advance Auto Parts carries a full inventory of 2 Mahle Engine Parts. Plus you will be keeping your Infiniti in peak condition while saving money because prices on these Mahle Engine Parts range from $6.99 to $17.99, plus, with more than 5 customer reviews and an impressive 4.5 stars average rating, you can be confident the Fram Engine Parts below will deliver on both quality and value.
from
$17.99
(1)
Engine Valve Cover Gasket
“Thought I had a rear main seal leak. Turned out the gasket slipped slightly (my fault) when I installed on try #1. It pinched. And leaked bad. Pic”
FAQs for 2003 Infiniti QX4 Engine Parts
Which Engine Parts are best-sellers for 2003 Infiniti QX4s?
Out of 58 Engine Parts that fit 2003 Infiniti QX4s, the following parts are the top sellers:
- Multi-Purpose Seal (18442666) – $11.99
- Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (18481438) – $12.99
- Engine Oil Cooler Seal (10935223) – $6.99
What’s the price range for 2003 Infiniti QX4 Engine Parts?
Engine Part prices for the 2003 Infiniti QX4 start at $1.99 and go up to $661.99 for the most premium parts.
What’s the average price of a Engine Part for a 2003 Infiniti QX4?
The average price for Engine Parts for the 2003 Infiniti QX4 is $89.68. Keep in mind the variety of part types within our Engine Part category so you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Parts for other Infiniti QX4 model years?
What are the cheapest Engine Parts for my 2003 Infiniti QX4?
The cheapest 2003 Infiniti QX4 Engine Parts we carry in stock are:
- Engine Coolant Water Bypass Gasket (11156530) – $1.99
- Oil Seal (10426044) – $4.99
- Oil Seal (15440103) – $5.99
- Engine Oil Cooler Seal (10935223) – $6.99
- Stock Replacement Engine Assembly Lubricant, 4 oz. (50175373) – $6.99
What are the top-rated Engine Parts that fit the 2003 Infiniti QX4?
Out of 196 reviews by customers, our 2003 Infiniti QX4 Engine Parts have an average customer rating of . These are some of the highest-rated Engine Part types for the 2003 Infiniti QX4 and their top-rated products:
- Engine Gaskets and Seals
- Engine Valve Cover Gasket (10700297) – $17.99
- Fuel Pump Lock Ring (10120281) – $25.99
- Engine Oil Pan Gasket Set – RTV Black silicone with Rubber end seals (15780340) – $20.99
What types of Engine Parts do you sell for my 2003 Infiniti QX4?
As of 3/1/26, these are some of the most in-demand types of Engine Parts for a 2003 Infiniti QX4:
Can I get help with 2003 Infiniti QX4 Engine Part orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Infiniti Engine Parts and more.
What is your return policy for Infiniti QX4 Engine Parts?
Advance Auto Parts keeps returns simple. For new Infiniti QX4 Engine Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
