2003 Infiniti QX4 Fuel and Emissions Systems
More 2003 Infiniti QX4 Fuel and Emissions Systems Categories
If you’re looking for an original Fuel and Emissions Systems replacement for a 2003 Infiniti QX4, you can search through our selection below. You’ll also find aftermarket and OEM Fuel and Emissions Systems to meet your needs.
Essential 2003 Infiniti QX4 Fuel and Emissions Systems
Bosch – Oxygen Sensor: 3 Wire, 22.44" Long, Heated, Exact Fit (Part No.13091)
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$49.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation advancements. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance. Bosch oxygen sensors deliver exceptional OE level reliability, performance and durability, further improving service life of the product.
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Product Features:
- Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
- Direct Fit includes OE Connector for easy installation
- Performance meets or exceeds OE specifications
- True Direct-fit OE connectors and harness
DENSO – First Time Fit Electric Fuel Pump (Part No.E3000334268ND)
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$158.70
The Denso Electric Fuel Pump is built to meet the stringent requirements of carmakers for high output, extended reliability and reduced noise.
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Product Features:
- OE-Equivalent and direct fit for easy installation.
- OE connections and fittings.
- The high output turbine delivers fuel with minimal pressure pulsation for quieter operation.
- Ultra-high balanced armature to minimize noise and vibration.
- High pressure check valve provides superior hot fuel handling characteristics.
- The brushes are designed for durability, efficiency, and low-resistance operation.
- High quality relief valve to protect the fuel delivery system.
Carquest Premium – Electric Fuel Pump Inertia Switch (Part No.SBA4426)
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$84.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Carquest Premium – Fuel Injector Connector (Part No.PTA1064)
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$4.29
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Nippon Reinz – Fuel Injector O-Ring (Part No.C1012251347NRZ)
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$3.39
NIPPON REINZ engineers work with OEMs to develop complete engine sealing solutions for gasoline, diesel, and alternative energy vehicles. We employ custom sealing solutions through our expert problem solving utilizing our regional research and development centers. As an Integral Partner with Virtually Every major vehicle and engine manufacturer worldwide, NIPPON REINZ offers a comprehensive range of sealing Innovative Systems, INCLUDING Head gaskets, Heat shields, sealing modules, secondary gaskets, Valve stem Seals, and transmission components.
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Delphi – Fuel Tank Cleaning Kit (Part No.FC01)
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$12.49
To perform a complete fuel pump replacement, clean the tank every time. Order the Delphi Fuel Tank Cleaning Kit (Part FC01). Remember, the original pump went into a clean fuel tank, to ensure the same level of performance, the new pump should too. 100 ye
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- Helps avoid premature fuel pump failure
- Lint free towel included
- Low suds formulation
- Removes harmful contaminants from the fuel tank
Carquest Premium – Fuel Pump Tank Seal TS3541966 (Part No.TS3541966)
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$6.49
Carquest Premium offers a complete line of fuel pump tank seals covering a wide variety of North American vehicle applications. Carquest Premium fuel pump tank seals are engineered to meet or exceed all OEM specifications.
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- Engineered to meet or exceed all OEM specifications
Carquest – Fuel Injector Seal Kit (Part No.274785)
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$10.05
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.
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- Designed to OE standards for ease of installation
- State-of-the-art designs that meet or exceed OE specifications
- Top-of-the-line quality and performance
- With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues
Carquest Premium – Reman Multi Port Fuel Injector (Part No.A218-1244)
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$56.99
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- Each unit is 100% tested to OE specifications.
- Includes new o-rings and seals made of premium OE quality materials.
- Includes application specific technical bulletin, where applicable.
Carquest Premium – Multi Purpose Relay (Part No.RAA2713)
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$40.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Felpro – Fuel Injection Throttle Body Mounting Gasket (Part No.61342)
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$3.29
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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- 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
- Validated for fit, form, and function
Carquest Premium – Coolant Temp Switch (Part No.ECA1919)
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$115.99
The CarQuest Vehicle Solutions line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The Coolant Temperature Switch monitors the temperature of the engine’s coolant, activating fans at factory designated temperature set-points ensuring proper engine temperature levels and peak engine performance are maintained.
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- Made to OE spec to ensure a proper fit, form and function.
- Sensors are engineered for precision performance, durability and a long service life.
- Designed and manufactured with quality materials, industry leading electronic components and strict quality controls. Engineered to meet OE performance.
Wells Vehicle Electronics – Fuel Injection Pressure Regulator (Part No.5G1155)
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$79.99
WVE is a leading source of advanced vehicle electronics components for replacement applications in the automotive aftermarket and original equipment applications. WVE offers high-technology manufacturing along with innovative solutions and improvements to
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Dorman – Fuel Filler Neck Coated To Prevent Rust (Part No.577-944)
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$148.99
Fuel filler neck leaking? This replacement fuel filler neck is precision-engineered and thoroughly tested to match the original filler neck for specific vehicle years, makes and models for a reliable repair.
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Product Features:
- Direct replacement – this fuel filler neck is made to match the original equipment on specific vehicles
- Durable construction – made of corrosion-resistant materials to reduce future failure potential
- Regulatory compliant – built to meet emission and inspection standards
- Trustworthy value – backed by team of engineers and quality control experts in the United States
Carquest Premium – Vapor Canister Purge Valve (Part No.CPC1211)
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$102.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Dorman – Evaporative Emissions Canister Vent Valve (Part No.911-501)
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$157.99
A malfunctioning vapor canister vent solenoid can cause the engine light to come on. This vapor canister vent solenoid is engineered of quality materials for durability to ensure proper operation of the vehicle’s evaporative emissions system.
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- Direct replacement – this vapor canister vent solenoid fits and performs like original equipment with simple plug-and-play installation
- Quality construction – manufactured from premium materials for a long service life
- Excellent value – original equipment function at a lower price
- Quality tested – has undergone simulation and endurance testing to ensure proper fit and performance
Walker – Walker Oxygen Sensor (Part No.C5010402604WKR)
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$105.82
Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet and exceed all original equipment specification and test requirements.
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Product Features:
- Improved Engine Response and Performance
- Lower Emissions
- Improved Fuel Economy
- Longer Sensor Life
- Meets OEM Specifications Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install
Dorman – Vapor Canister Vent (Part No.B7091751090DOR)
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$129.51
Vapor Canister Vent
Carquest Premium – Exhaust Gas Recirculation (EGR) Vacuum Regulator Solenoid Connector (Part No.PTA2918)
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$149.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Hitachi – Air Flow Sensor – New Actual OE Part (Part No.MAF0024)
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$343.99
Hitachis Air Flow Sensors (MAFs) measure the amount and characteristics of air entering the engine. Hitachi uses precision elements and high-quality components for enhanced durability and accurate air flow measurements. Hitachi MAFs are 100% air flow tested for ideal performance and are calibrated for each application ensuring your vehicle meets the strict emission standards set by the manufacturer. Details such as a contaminant bypass port (when applicable) and protected circuitry providing a durable and reliable product approved by OE manufacturers makes Hitachis air flow sensors the premium choice.
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Product Features:
- Hitachi is a Tier 1 OE supplier for air flow sensors
- 100% NEW, never remanufactured
- Hitachi’s advanced precision elements and high quality components provide enhanced durability. We feature exact fitment and calibration for each vehicle, which assists engine efficiency and fuel mileage. Our sensors are 100% air flow tested to meet exac
- Precision manufactured and assembled sensing elements for accurate air flow measurements
Carquest Premium – Fuel Pump Strainer FS2321774 (Part No.FS2321774)
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$23.99
CARQUEST Premium electric fuel pumps are built to meet or exceed Original Equipment (OE) specifications for fit, form and function. Our CARQUEST Premium fuel pumps are built to be installed in the Original Equipment module or assembly. We have invested in industry-leading quality upgrades, like upgraded turbine impellers and 100% carbon commutators, to deliver greater reliability. CARQUEST Premium electric fuel pumps are engineered with superior quality components to provide the longest life and reliable performance.
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Product Features:
- Meets or exceeds OE specifications for fit, form and function
- 100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
- OE upgraded turbine impellers greatly reduce fuel pulsation
- All fuel pumps are 100% performance tested
Dorman – Fuel Sender Lock Rin (Part No.E2029751095DOR)
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$21.22
Fuel Sender Lock Rin
Hitachi – Air Intake Temperature Sensor – New Actual OE Part (Part No.TMS0003)
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$39.49
Hitachi is a Tier One OE supplier to the largest automobile manufacturers globally, delivery industry leading quality, and exceeding customer expectations with our products and service. Hitachi is bringing that same knowledge and expertise to the premium products we deliver in the Aftermarket because Quality Matters. Hitachi’s line of vehicle sensors are crucial to an efficiently operating vehicle. Whether is it an Automatic Transmission Speed Sensor, Crankshaft Angle Sensor, Camshaft Angle Sensor, Knock Sensor, Pressure Sensor, Temperature Sensor, Throttle Position Sensor, or Oil Level Sensor, you can rely on accurate readings and signals to be transmitted to your vehicles’ Electrical Control Unit (ECU) for an efficiently running system. Hitachi uses premium components and materials in the construction of all sensors extending the service interval of the product. Designed to meet the exact needs of each specific vehicle, Hitachi’s Sensors are the premium choice. Hitachi sensor line supports accurate measurement for reliable engine performance.
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Product Features:
- Hitachi is a Tier 1 OE supplier for temperature sensors
- 100% NEW, never remanufactured
- Meets the OE performance and durability standards for this application
- Accurate and reliable measurements
- Provides accurate measurement; reliable engine performance.
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17591)
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$11.99
None
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Product Features:
- Protects your fuel from theft and vandalism
- Manufactured from durable, long-life materials
- Independently tested for emission control
- Passes all state and federal emissions tests
- Reduces air pollution with proper sealing and venting
Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1186)
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$43.99
CARQUEST premium engine management products provide the right automatic transmission speed sensor for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions. Designed to meet OE quali
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- Lifecycle tested to meet or exceed OE specifications
- Direct OE replacement
- High strength thermoplastic is resistant to shock, temperature and chemicals. Also protects internal components from moisture and contaminants.
- Global coverage for import and/or domestic applications.
Carquest Premium – Fuel Injector Seal Kit (Part No.AS027)
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$9.49
CARQUEST fuel injector seal kits include the necessary O-rings and seals to properly reseal the injector, which is a recommended practice any time the injector is removed. Each kit services one injector and includes hard to find or previously dealer-only components.
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- Premium OE quality materials
- Services one injector
Carquest Premium – Idle Air Control Valve (Part No.AEC1022)
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$199.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Spectra Premium – Fuel Tank Strap (Part No.ST359)
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$80.99
Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium fuel tank straps meet or exceed the performance of the original equipment they replace.
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Product Features:
- Unit is designed to OE fit, form and function requirements accomplished by leveraging our expertise
- Direct fit ensures safe, secure fuel tank installation
- Product individually packaged and labeled to help reduce product damage prior to installation
- Industry leading coverage on straps for plastic tanks
- Manufactured with double-layered steel on the mounting brackets for a more robust solution
Popular 2003 Infiniti QX4 Fuel and Emissions Systems Categories
2003 Infiniti QX4 Fuel and Emissions Systems
You count on your 2003 Infiniti QX4 to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Fuel and Emissions Systems. With 82 Fuel and Emissions Systems ranging in price from $1.83 to $448.99, you’re sure to find everything you need for your 2003 Infiniti QX4.
Brands matter. If you want to shop a specific Fuel and Emissions Systems brand, we stock 19 different brands like Carquest Premium, Felpro, and Motorad. 2003 Infiniti QX4 Fuel and Emissions Systems start as low as $1.83!
One of the best ways to find top quality OEM or aftermarket Fuel and Emissions Systems is by asking professionals. Short of that, you can shop with confidence thanks to our 453 extensive product reviews on 2003 Infiniti QX4 Fuel and Emissions Systems. Some of the top-rated Fuel and Emissions Systems products we carry are Oxygen Sensor: 4 Wire, 24.02" Long, Heated, Exact Fit with 3.8 stars and Oxygen Sensor: 3 Wire, 24.02" Long, Heated, Universal with 3.9 stars.
Did we mention you can order your Fuel and Emissions Systems from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Fuel and Emissions Systems inventory for your 2003 Infiniti QX4 below to get started!
Top-Rated Fuel and Emissions Systems Brands For Your 2003 Infiniti QX4
Trusted Fuel and Emissions Systems OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 Infiniti QX4 running right for years to come. In our inventory you’ll find brands like Carquest Premium, Felpro, Motorad, and even more.
Popular Felpro Fuel and Emissions Systems
You’ll find popular Felpro brand products across Fuel Injectors. All are waiting to get your 2003 Infiniti QX4 back on the road. Some of the top-rated Felpro products in these categories are:
Top-Rated Carquest Premium Fuel and Emissions Systems
If Carquest Premium are what you’re looking for, our inventory holds plenty. We stock Carquest Premium brand Fuel and Emissions Systems for your 2003 Infiniti QX4, and some of our most reviewed Carquest Premium parts include:
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$24.99
(69)
Locking Fuel Cap: 10508, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack
Gas Caps
FAQs for 2003 Infiniti QX4 Fuel and Emissions Systems
What are the most purchased Fuel and Emissions Systems for the 2003 Infiniti QX4?
Out of 82 Fuel and Emissions Systems for the 2003 Infiniti QX4, the most popular in our inventory are:
What are the top-rated 2003 Infiniti QX4 Fuel and Emissions Systems?
Top-rated Fuel and Emissions Systems for your 2003 Infiniti QX4 based on customer reviews/ratings are:
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$69.99
(7)
Oxygen Sensor: 3 Wire, 24.02" Long, Heated, Universal
“Comes with plenty enough instructions with pictures.Its a Bosch so really nothing else to say. I personally think they are the best for imports if you”
