2003 Isuzu NPR-HD Engine Parts

Below you will find various in-demand Isuzu Engine Parts, components and accessories for your 2003 NPR-HD. Advance Auto Parts has popular NPR-HD parts like Camshafts, Engine Gaskets and Seals, Engine Switches, Sensors and Relays and more. You’ll also find aftermarket and OEM Engine Parts for other NPR-HD model years including 2010, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and more. Select a category of 2003 Isuzu NPR-HD Engine Parts below and start saving instantly.

Popular 2003 Isuzu NPR-HD Engine Parts Categories

Crankshaft Position Sensors

Timing Covers

Harmonic Balancers

Oil Pans

Engine Oil Dip Stick Tubes

Crankshaft Seals

Crankshaft Bolts

Oil Caps

Oil Cooler Line Connectors

Water Connection Gaskets

Camshaft Plugs

Expansion Plugs

Connecting Rod Bolts and Nuts

Remanufactured Engines

Cylinder Heads

Essential Engine Parts for 2003 Isuzu NPR-HDs

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$26.99

This engine oil dipstick is designed to match the fit and function of an original equipment dipstick in specified applications. Level marks are clearly distinguished and properly gauged for accuracy.

Product Features:

Ideal replacement – this engine oil dipstick is designed to match the fit and function of an original equipment dipstick in specified applications.
Ideal solution – level marks are clearly distinguished and properly gauged for accuracy
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

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$8.49

This engine harmonic balancer bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this engine harmonic balancer bolt matches the fit and function of the factory part on specified years, makes and models.
Ideal solution – this bolt is a reliable replacement for an original part that is missing or has failed due to fatigue.
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

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$11.29

This engine oil cooler line connector is designed to match the appearance and function of the original hardware on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:

Direct replacement – this engine oil cooler line connector matches the appearance and function of the factory hardware on specified applications.
Ideal solution – this connector is a reliable replacement for an original part that is missing or has failed due to fatigue.
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

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$70.99

This direct replacement harmonic balancer features a stress-resistant rubber bond to properly absorb engine vibration. Stringent standards help ensure excellent tensile and impact strength for greater durability.

Product Features:

Ideal replacement – this harmonic balancer assembly exactly matches the fit and function of the original harmonic balancer for a direct replacement.
Durable construction – stringent specifications and careful construction help ensure longevity.
Thoroughly tested – this harmonic balancer has undergone dimensional verification, material validation and functional testing
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

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$184.99

This replacement valve cover matches the fit and function of the original equipment part that may be damaged or warped. Made from quality materials for excellent fit and superior heat resistance, this valve cover has undergone extensive testing.

Product Features:

Direct replacement – this valve cover matches the original equipment part for fit and function.
Durable construction – this valve cover is made of quality materials to withstand extreme temperatures to resist leaking.
Cost-effective solution – offers original equipment performance at competitive price
Quality tested – this part has undergone try-on and material testing to ensure a quality fit and reliable service

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$9.99

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.

Product Features:

Provides proper seal to ensure leak prevention
Stops engine blow by
High quality construction
Meets all OEM specifications

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$29.99

Product Features:

Brand may vary by location

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$1.29

This engine connecting rod nut is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this engine connecting rod nut matches the fit and function of the factory part on specified years, makes and models.
Ideal solution – this nut is a reliable replacement for an original part that is missing or has failed due to fatigue
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

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$39.49

This direct replacement timing cover matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards.

Product Features:

Direct replacement – this engine timing cover matches the fit and function of the original equipment cover
Durable construction – this part is specifically designed to withstand extreme underhood temperatures for a long service life
Cost-effective solution – offers original equipment quality at a competitive price
Quality tested – this part has undergone extensive testing to ensure a quality fit and long service life

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$9.99

This engine oil filter adapter O-ring is designed to match the fit and function of the original O-ring on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this engine oil filter adapter O-ring is designed to match the fit and function of the original O-ring on specified vehicles.
Restores functionality – this O-ring is made to fit and fully restore part functionality after the original O-ring 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

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$2.29

This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
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

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$42.99

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:

DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SUPERIOR SEAL — Manufactured with rubber compounds to ensure a consistent and long-life seal across the entire oil pan
PREVENTS OVERTIGHTENING — Torque limiters help eliminate overtightening and gasket splitting and extruding (where applicable)
OE-STYLE REPLACEMENT GASKET — Engineered for OE-style molded rubber gasket replacement
EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
ENGINEERING EXPERTISE — Parts are designed, tested, validated and approved by Fel-Pro engineers through rigorous research and development
ENGINEERING EXPERTISE — Parts are designed, tested, validated and approved by Fel-Pro engineers through rigorous research and development

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$45.99

This engine harmonic balancer pulley is designed to match the fit and function of the original pulley on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:

Direct replacement – this engine harmonic balancer pulley is designed to match the fit and function of the original pulley on specified applications.
Restores functionality – reliable replacement for an original pulley that has failed due to vibration.
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

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$47.49

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:

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
Installation tool reduces sleeve distortion and allows for installation without removal from the shaft

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$401.99

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:

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

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$1.49

Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models.
Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
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

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$125.99

An ACDelco Professional, premium aftermarket Engine Crankshaft Position Sensor is a high quality replacement for many vehicles on the road today. It monitors the position and rotational speed of the crankshaft. The signal from the crankshaft position sensor is used by the engine control module to determine fuel injection and ignition timing. This premium aftermarket replacement engine crankshaft position sensor is manufactured to meet your expectations for fit, form, and function.

Product Features:

Professional, premium aftermarket replacement
Provides the performance and dependability you expect from ACDelco
Manufactured to meet expectations for fit, form, and function

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$9.99

This engine coolant water bypass gasket is designed to match the fit and function of the original gasket on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this engine coolant water bypass 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 functionality after the original part 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

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$131.99

Oil pan leaking? This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

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

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$209.99

Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium oil pans meet or exceed the performance of the original equipment they replace.

Product Features:

Unit is designed to OE fit, form and function requirements accomplished by leveraging our OE expertise
Durable powder coating applied to exterior of oil pan for a long lasting rust free unit
Washed and then sealed with an anti-corrosive spray on the interior for a rust free unit at installation
Fit tested on the very same vehicle application for which it was developed verifying first-hand that the design fits properly and can be easily installed
Engineered to stringent tolerances based on our Canadian engineers’ in-depth knowledge of the OE part it’s designed to replace
Road tested to ensure real world performance and to verify that each design meets our high standards for quality
Coating salt spray tested for over 200 hours to insure durability

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$74.99

Ensure the proper sealing of the engine with our Engine Rear Main Seal Cover. The Seal Cover is designed from high-quality materials to stop and prevent engine oil leakage.

Product Features:

Rear Main Seal Cover Kit.
Rear Main Seal Cover Kit.
Ensure the proper sealing of the engine with our Engine Rear Main Seal Cover. The Seal Cover is designed from high-quality materials to stop and prevent engine oil leakage.
SPECIAL TOOL REQUIRED FOR INSTALLATIONá- GM alignment tool J414792B or Dorman 635-000 (or equivalent) is required to properly install cover assembly. Failure to use the correct tool and installation procedures will result in seal leaks.
Comes with bolts and gaskets – everything necessary for a complete repair

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$21.49

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:

DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SUPERIOR SEAL — Manufactured with rubber compounds to help ensure a consistent and long-life seal
PRECISE DESIGN — Engineered to work with the embossed cover and pan flanges
PREVENTS OVERTIGHTENING — Features compression limiters incorporated into the design to help eliminate overtightening (application specific)
OE-STYLE REPLACEMENT GASKET — Engineered for OE-style molded rubber gasket replacement
EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted

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$33.99

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:

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

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$3995.99

Remanufactured Engines are fully disassembled; heads, blocks, cranks & cams are machined & wear parts are replaced. Each engine is individually tested after assembly to assure compression, oil pressure and water jacket integrity.

Product Features:

Each engine we remanufacture is essentially reverse engineered – in part to discover original factory deficiencies. If possible, our seasoned R&D personnel & QC experts make improvements. Why shouldn’t our engine last longer than your first?
Engines come with installation gasket set & oil pump unless noted otherwise. If we have important installation information it will be included on tags or in the paperwork packaged with your engine.
Engines are securely packaged in a recyclable container that will also protect your core on the return trip. Our nationwide warehouse network means speedy delivery.
Each engine is remanufactured with quality OE level components not “white” box generic parts that may or may not satisfy your needs and expectations. When you use the best you get the best results and satisfaction.

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$3595.99

(PDT) Premium Drivetrain Engines are remanufactured to original equipment (OEM) demanding specifications by an OEM builder. Each engine assembly is manufactured with the highest technology equipment, the most intelligent engineering support, and the best practices available in remanufacturing today.

Product Features:

REMANUFACTURING and QUALITY CHECKS – ENGINE BLOCKS: Each block is magnafluxed for cracks and checked for any visible damage to the block or threaded holes before being repainted to the original color. Five CNC machining centers are programmed to precise specifications that meet or exceed those established by the OEM for each engine block. After the engine block is bored, decked, and chamfered, each cylinder is honed with the specified OEM cross-hatch pattern. 100% gauging of all cylinder bores for diameter and roundness after final honing operation. 100% new pistons, rings and bearings are installed in every engine.
CYLINDER HEADS: Every head is resurfaced and completely inspected for any visible damage or cracks to the casting or threaded holes. Any heads that have cracks in the combustion chamber are immediately scrapped, no weld repairs. Valve seats are machined, inspected and replaced if necessary. Valve guides are inspected with an air gauge and replaced if necessary. The cam bore is air gauge checked on overhead cam engines and machined if required. 100% new valves, seals and lifters are used in every head. All head and valve assemblies are quantified for leakage using a vacuum decay process.
CONNECTING RODS: Each connecting rod is measured against OEM specifications for bend, twist, and center-to-center length before use. The piston pin bore and bearing bore are measured with air gauges for proper dimensions. New torque to yield rod bolts and nuts are installed.
CRANKSHAFTS: Crankshafts are machined on a fully automated CNC crank grinder. This enables consistency and critical tolerances for each journal. All oil galley holes are chamfered and brushed after machining and the crankshaft is given a final wash to ensure cleanliness. Each crank is inspected for cracks, bow and all applicable run-out specs for rod and main journals.
DYNAMIC ENGINE TESTING: Sims Testing – All engines are cold motored and checked and measured for proper torque to turn, cylinder compression, oil flow, oil pressure as well as monitored for any unusual noises inside the assembly. All engine assemblies quantified for oil gallery, gasket, and casting leakage in the oil passageways.
Product might not be available in all states due to local laws.

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$24.99

This engine oil dipstick tube is designed to match the fit and function of the original tube on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this engine oil dipstick tube is designed to match the fit and function of the original tube on specified vehicles
Restores functionality – reliable replacement for an original part that is missing, bent or broken
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

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$14.99

This engine oil filler tube is designed to match the fit and function of the original tube on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this engine oil filler tube is designed to match the fit and function of the original tube on specified vehicles
Restores functionality – reliable replacement for an original tube that has failed due to fatigue and corrosion
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

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$29.99

This engine oil filler tube is designed to match the fit and function of the original tube on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this engine oil filler tube is designed to match the fit and function of the original tube on specified vehicles.
Restores functionality – reliable replacement for an original tube that has failed due to fatigue and corrosion.
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

Upgrade your 2003 Isuzu NPR-HD with Top-Quality Engine Parts

When it comes to maintaining or upgrading your 2003 Isuzu NPR-HD, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Isuzu or enhancing its overall performance, Engine Parts are key to keeping your NPR-HD functioning at its best. At Advance Auto Parts, we offer a wide selection of 40 Engine Parts for the 2003 Isuzu NPR-HD, designed to meet your needs without breaking the bank. From Camshaft replacements to Engine Gaskets and Seals 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 Isuzu NPR-HD at great prices. Our Engine Parts inventory for this model ranges from just $1.29 to $3,644.99, with an average price of $330.22. Our 40 Engine Parts in stock come from 8 trusted brands, so you’re sure to find the right part for your 2003 Isuzu NPR-HD 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 Isuzu NPR-HD, we stock popular OEM and aftermarket Engine Parts from top names like FELPRO, Dorman, National, and more. FELPRO Engine Parts start at just $33.99 and boast an impressive 5 stars average rating from customers. Dorman and National also bring quality to the table, with Engine Parts available starting at $1.29, and at an average 4 stars rating. With 266 customer reviews and counting, our 2003 Isuzu NPR-HD 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, Fluids and Chemicals and more to make sure your 2003 Isuzu NPR-HD is always ready to roll. We’re committed to providing you with everything you need to keep your NPR-HD in top shape, all in one place. Start shopping confidently below for your 2003 Isuzu NPR-HD!

Best-Selling Camshafts for 2003 Isuzu NPR-HDs

Enhance the driving experience in your Isuzu with 3 quality Camshaft components, starting at $1.49.

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$2.29

Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
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

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$1.49

Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
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

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$2.49

This engine camshaft plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this engine camshaft plug matches the fit and function of the factory part on specified years, makes and models.
Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
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

Top Picks for 2003 Isuzu NPR-HD Engine Switches, Sensors and Relays

Upgrade Isuzu NPR-HDs with top-quality Engine Switches, Sensors and Relays parts, including 2 OEM and aftermarket selections for your 2003 model.

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$125.99

Professional, premium aftermarket replacement
Provides the performance and dependability you expect from ACDelco
Manufactured to meet expectations for fit, form, and function

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$86.99

This engine crankshaft 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.

Product Features:

Direct replacement – this engine crankshaft 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

In-Demand Engine Timing Parts for 2003 Isuzu NPR-HDs

Select from 3 premium Engine Timing Parts parts for your 2003 Isuzu NPR-HD, with prices ranging from $39.49 to $102.99.

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$39.49

Direct replacement – this engine timing cover matches the fit and function of the original equipment cover
Durable construction – this part is specifically designed to withstand extreme underhood temperatures for a long service life
Cost-effective solution – offers original equipment quality at a competitive price
Quality tested – this part has undergone extensive testing to ensure a quality fit and long service life

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$102.99

Direct replacement – this engine timing cover matches the fit and function of the original equipment cover.
Durable construction – this part is specifically designed to withstand extreme underhood temperatures for a long service life.
Cost-effective solution – offers original equipment quality at a competitive price
Quality tested – this part has undergone extensive testing to ensure a quality fit and long service life

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$47.49

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
Installation tool reduces sleeve distortion and allows for installation without removal from the shaft

Most Sold 2003 Isuzu NPR-HD Valve Cover and Cylinder Heads

Explore our best-selling Isuzu parts for the 2003 NPR-HD among 3 OEM and aftermarket options starting from $184.99.

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$184.99

Direct replacement – this valve cover matches the original equipment part for fit and function.
Durable construction – this valve cover is made of quality materials to withstand extreme temperatures to resist leaking.
Cost-effective solution – offers original equipment performance at competitive price
Quality tested – this part has undergone try-on and material testing to ensure a quality fit and reliable service

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$449.99

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

from

$401.99

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

Top-Rated Engine Parts Brands For Your 2003 Isuzu NPR-HD

Shop for the best-rated brands offering Engine Parts and other products for your 2003 Isuzu NPR-HDs. Below you’ll find some of our best rated Engine Parts from FELPRO, Dorman, and National, and more. Engine Parts from these brands that fit a 2003 NPR-HD start at just $1.29 and are rated as high as 5 stars. OEM and aftermarket Engine Parts don’t get more top quality, durable, and affordable than from the brands below.

Popular FELPRO 2003 Isuzu NPR-HD Engine Parts

When it comes to maintaining or upgrading your 2003 Isuzu NPR-HD, 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 Isuzu NPR-HD. With over 2 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 $33.99, with an average price of just $38.49. Plus, with over 91 customer reviews and an average rating of 5 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.

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$33.99

(42)

Engine Valve Cover Gasket Set

“no problem”

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$42.99

(49)

Oil Pan Gasket Set: PermaDry Molded Rubber, Includes Snap-Ups®, 9 Piece Set

“Good material seats well on the oil pan”

Popular Dorman 2003 Isuzu NPR-HD Engine Parts

Dorman auto parts is one of the highest quality Engine Part brands in the market. Any 2003 Isuzu NPR-HD owner should feel confident when installing genuine Dorman parts in their vehicle. To ensure the best fit and performance for your 2003 NPR-HD, Advance Auto Parts carries a full inventory of 26 Dorman Engine Parts. Plus you will be keeping your Isuzu in peak condition while saving money because prices on these Dorman Engine Parts range from $1.29 to $773.99, plus, with more than 106 customer reviews and an impressive 4 stars average rating, you can be confident the Fram Engine Parts below will deliver on both quality and value.

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$132.99

This product is not rated

Harmonic Balancer Assembly

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$102.99

This product is not rated

Timing Cover Kit

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$13.99

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Engine Oil Filler Cap

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FAQs for 2003 Isuzu NPR-HD Engine Parts

Which Engine Parts are best-sellers for 2003 Isuzu NPR-HDs?

Out of 40 Engine Parts that fit 2003 Isuzu NPR-HDs, the following parts are the top sellers:

Oil Pan Gasket Set: PermaDry Molded Rubber, Includes Snap-Ups®, 9 Piece Set (5720575) – $42.99
Engine Valve Cover Gasket Set (5787602) – $33.99
Oil Level Dip Stick Tube (10243144) – $24.99

What’s the price range for 2003 Isuzu NPR-HD Engine Parts?

Engine Part prices for the 2003 Isuzu NPR-HD start at $1.29 and go up to $3,644.99 for the most premium parts.

What’s the average price of a Engine Part for a 2003 Isuzu NPR-HD?

The average price for Engine Parts for the 2003 Isuzu NPR-HD is $330.22. 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 Isuzu NPR-HD model years?

Yes, we currently carry Engine Parts for 25 model years of Isuzu NPR-HDs between 1999 and 2024. Engine Parts are bought most frequently for the following model years: 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, and 2010.

What are the cheapest Engine Parts for my 2003 Isuzu NPR-HD?

The cheapest 2003 Isuzu NPR-HD Engine Parts we carry in stock are:

Connecting Rod Nuts, Type 2, 3/8-24 X 9/16 In., Ford (Sold by each) (22148959) – $1.29
Steel Cup Expansion Plug 1-5/8 In., Height 0.500 (sold by each) (16140188) – $1.49
Steel Cup Expansion Plug 41.5mm, Height 0.536 (sold by each) (16140156) – $1.49
Steel Cup Expansion Plug 1-5/8 In., Height 0.500 (3492265) – $2.29
Steel Cup Expansion Plug 2-7/64 In., Height 0.310 (sold by each) (22140588) – $2.49

What are the top-rated Engine Parts that fit the 2003 Isuzu NPR-HD?

Out of 266 reviews by customers, our 2003 Isuzu NPR-HD Engine Parts have an average customer rating of . These are some of the highest-rated Engine Part types for the 2003 Isuzu NPR-HD and their top-rated products:

Valve Cover and Cylinder Heads
- Valve Covers: With Gasket, Direct Replacement, Aluminum, Driver Side (10223384) – $184.99
Engine Gaskets and Seals
- Valve Covers: With Gasket, Direct Replacement, Aluminum, Driver Side (10223384) – $184.99

What types of Engine Parts do you sell for my 2003 Isuzu NPR-HD?

As of 2/5/25, these are some of the most in-demand types of Engine Parts for a 2003 Isuzu NPR-HD:

Can I get help with 2003 Isuzu NPR-HD Engine Part orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Isuzu Engine Parts and more.

What is your return policy for Isuzu NPR-HD Engine Parts?

Advance Auto Parts keeps returns simple. For new Isuzu NPR-HD Engine Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2003 Isuzu NPR-HD Engine Parts

Dorman – Help – Engine Oil Dipstick: Direct Replacement, Stainless Steel (Part No.917-411)

Dorman – Harmonic Balancer Bolt (Part No.917-139)

Dorman – Oil Cooler Line Connector (Part No.800-701)

Dorman – Harmonic Balancer Assembly (Part No.594-121)

Dorman – Valve Covers: With Gasket, Direct Replacement, Aluminum, Driver Side (Part No.264-965)

Carquest Premium – Engine Oil Filler Cap: 10099, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10099)

Driveworks – Crankshaft Seal (Part No.S-100085)

Dorman – Connecting Rod Nuts, Type 2, 3/8-24 X 9/16 In., Ford (Sold by each) (Part No.635-002)

Dorman – Timing Cover With Gasket And Seal (Part No.635-505)

Dorman – Help – Oil Adapter And Cooler Gasket Assortment (Part No.82560)

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-5/8 In., Height 0.500 (Part No.362657.1)

Felpro – Oil Pan Gasket Set: PermaDry Molded Rubber, Includes Snap-Ups®, 9 Piece Set (Part No.OS 34500 R)

Dorman – Harmonic Balancer Pulley (Part No.594-530)

National – Shaft Repair Sleeve (Part No.99210)

Spartan – Engine Cylinder Head; Chev 350 96-02 Cyl Head (Part No.2CH4)

Dorman – Steel Cup Expansion Plug 41.5mm, Height 0.536 (sold by each) (Part No.555-087)

ACDelco – Engine Crankshaft Position Sensor (Part No.213-4761)

Dorman – Help – Coolant Bypass Seals (Part No.56390)

Dorman – Engine Oil Pan: Direct Fit, Steel, Rear Sump, 5 Quart (Part No.264-132)

Spectra Premium – Engine Oil Pan (Part No.GMP77A)

Dorman – Rear Main Seal Cover Kit (Part No.635-518)

Felpro – Engine Valve Cover Gasket Set (Part No.VS 50907 R)

Felpro – Engine Valve Cover Gasket Set (Part No.VS 50088 R)

Spartan – Engine Long Block; Chev 6.0 10-15 Engine (Part No.DCT13)

Premium Drive Train – Engine Assembly (Part No.L6005GMC)

Dorman – Help – Oil Level Dip Stick Tube (Part No.917-303)

Dorman – Engine Oil Filler Tube (Part No.917-412)

Dorman – Oil Fill Tube with Gasket (Part No.917-420)

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-5/8 In., Height 0.500 (Part No.362657.1)

Dorman – Steel Cup Expansion Plug 1-5/8 In., Height 0.500 (sold by each) (Part No.555-030)

Dorman – Steel Cup Expansion Plug 2-7/64 In., Height 0.310 (sold by each) (Part No.555-080)

Felpro – Oil Pan Gasket Set: PermaDry Molded Rubber, Includes Snap-Ups®, 9 Piece Set (Part No.OS 34500 R)

Dorman – Rear Main Seal Cover Kit (Part No.635-518)

Dorman – Help – Coolant Bypass Seals (Part No.56390)

Felpro – Engine Valve Cover Gasket Set (Part No.VS 50088 R)

ACDelco – Engine Crankshaft Position Sensor (Part No.213-4761)

Dorman – Crankshaft Position Sensor (Part No.917-755)

Dorman – Timing Cover With Gasket And Seal (Part No.635-505)

Dorman – Timing Cover Kit (Part No.635-522)

National – Shaft Repair Sleeve (Part No.99210)

Dorman – Valve Covers: With Gasket, Direct Replacement, Aluminum, Driver Side (Part No.264-965)

Spartan – Engine Cylinder Head; Chev 6.0 V8 01-10 Gas Head (Part No.2CTF)

Spartan – Engine Cylinder Head; Chev 350 96-02 Cyl Head (Part No.2CH4)