2003 GMC Sierra 3500 Engine Parts

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:

• Each upper intake manifold gasket is built to meet or exceed 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
• Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

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.

Product Features:

• Steel-backed Babbitt lining material
• Used in automotive and high-performance
• Babbitt is designed to perform under extreme loads w/o damaging other engine parts
• Babbitt is more environmentally friendly than other material
• ISO & QS certified manufacturing

The flat surface on the original equipment hose clamps tend to apply uneven force on turbocharger pipes and hoses, often causing leaks and a loss of turbo pressure. This Dorman OE FIX Power Band Clamp features a patented curved profile that helps achieve a stronger seal than the factory clamp on boots and pipes. Powerbands are made of stainless steel, and have a low-profile spiral screw for easy installation in tight spaces.

Product Features:

• Improved design – this Power Band Clamp’s patented curved profile provides a stronger seal to prevent pressure leaks up to 100 psi
• Compact construction – low-profile spiral screw takes less space than the original T-bolt clamp and requires less torque for proper installation
• Durable construction – made of tough stainless steel with a fully enclosed screw for strength and durability
• Independently tested – validated by a third-party laboratory to ensure a more secure seal

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:

• 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

The ACDelco GM Original Equipment Engine Oil Cooler Seal is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:

• GM-recommended replacement part for your GM vehicle’s original factory component
• Offering the quality, reliability, and durability of GM OE
• Manufactured to GM OE specification for fit, form, and function

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.

Product Features:

• Hypereutectic
• Made w/exclusive FM425 material for excellent strength & scuff resistance – allows tighter bore and improves sealing for less blow-by
• State-of-the-art manufacturing
• Exacting tolerances
• Meets or exceeds OEM specifications

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:

• 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

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:

• Engine$aver Hardware cost-saving application
• Repairs worn sealing surfaces to assure a leak free repair
• 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
• Validated for fit, form, and function

Valley Pan Gasket

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

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

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:

• Meets or exceeds all original equipment specifications
• Application specific design to ensure a perfect fit
• Engineered for the sealing repair environment
• Validated for fit, form and function
• Unsurpassed quality you can trust

Sealed Power® Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.

Product Features:

• Unsurpassed quality that you can trust
• Uses leading edge materials
• State-of-the-art manufacturing
• Exacting tolerances
• Meets or exceeds OEM specifications
• New OEM riveted pin retaining design

Product Features:

• All wheels, shafts and corresponding bores are measured and controlled with specific go/no-go tolerances and renewed or replaced as needed to ensure trouble-free operation.
• Each unit is 100% disassembled and thoroughly cleaned using proprietary processes and dedicated specialized equipment.
• All components are inspected to exact standards, and renewed as appropriate to ensure that problematic areas that typically cause failure are renewed to the highest quality standards.
• 100% of rotating, journal, and thrust bearings and seals are replaced, and all mating surfaces/passages are renewed as required for a longer-lasting unit.
• Each unit comes with a pre-lube syringe to ensure product protection during installation.
• As a remanufactured Original Equipment part, this unit guarantees a perfect vehicle fit.
• Our remanufacturing process is earth-friendly, as it reduces the energy and raw material needed to make a new part by 80%.
• Meets or exceeds O.E. performance.
• Comes with a pre-lube syringe to ensure product protection during installation.

Optimize your 01-04 LB7 GM diesel’s airflow to improve throttle response with aFe’s ATLAS 3″ turbo down-pipe. Constructed from 3″ mandrel bent steel tubing for maximum flow, the larger tube diameter and smooth transition bends allow increased airflow between your OE turbo and exhaust to reduce EGT’s for quicker turbo spool times. The CNC machined heavy duty inlet flange with turbine gasket and V-band outlet flange ensure an OE-style, 360 degree sealing surface. Coated with a black finish, the ATLAS turbo down-pipe is wrapped with thermal header tape to reduce EGT’s for improved performance and durability. Flow and Performance: The ATLAS turbo down-pipe is made from 3″ mandrel bent steel tubing offering smoother transition bends for low turbulence to deliver quicker throttle response. Perfect Fit: The ATLAS turbo down-pipe is an upgrade to the OE down-pipe and utilizes the factory mounting locations for true bolt-on performance. Finish: This down pipe is coated with a black finish and wrapped in thermal header tape for better insulation. This reduces EGT’s and under hood temperatures. Note: This system is not currently CARB exempt or available for sale in California, and cannot be used on any vehicle registered with the California Department of Motor Vehicle. This item in not legal in NY for use on vehicles with CA emissions.

Product Features:

• Mandrel Bent Black Finished Steel For Long Lasting Good Looks
• Replaces OE Down-Pipe For True Bolt-On Performance
• Wrapped in High Temp Thermal Tape For Insulation
• CNC Machined V-Band Inlet/Outlet Flange

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

The ACDelco GM Original Equipment Turbo Oil Line Gasket is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:

• GM-recommended replacement part for your GM vehicle’s original factory component
• Offering the quality, reliability, and durability of GM OE
• Manufactured to GM OE specification for fit, form, and function

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.

Product Features:

• Unsurpassed quality that you can trust
• Uses leading edge materials
• State-of-the-art manufacturing
• Exacting tolerances
• Meets or exceeds OEM specifications

Gates Turbocharger Hose Kits offer the convenience of a complete solution in one kit. Not only are all the parts included, but the turbocharger hose features a construction far superior to the Original Equipment Manufacturer (OEM) equivalent.

Product Features:

• High-quality silicone cover provides extreme temperature resistance in high-temperature under-hood conditions
• Increased durability due to multiple layers of reinforcement, resulting in longer service life
• Specially formulated oil-resistant Fluorelastomer liner prevents damage
• T-bolt clamps with stainless steel band and bridge both resist corrosion and provide higher torque for optimal sealing
• The T-Bolt clamps feature a 301 stainless steel band and bridge to resist corrosion better than carbon steel bands.
• The stainless steel bands, produced with fully rounded edges, prevent hose damage.
• T-Bolt Clamps come with a nut to minimize loosening.

Timing Set includes all components for a quick and efficient replacement

Product Features:

• Utilizes the latest in design and technology to offer complete chain sets
• CAD designed and manufactured using premium materials
• Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
• Utilizes the latest in design and technology to offer complete chain sets
• Refer to our online catalog for detailed application-specific information
• Set Includes: Cam Sprocket, Crankshaft Sprocket, Timing Chain

Melling oil pumps provide dependable performance every time in every application. Every Melling oil pump is engineered and assembled to the highest production standards from high quality materials. All Melling oil pumps use the latest in gear and gerotor

Product Features:

• Manufactured from high quality materials for consistent durable wear
• Precision engineered for optimum fit and function
• Designed for long-life and worry-free performance
• Meets or exceeds original equipment specifications

A new Melling pick-up tube/oil screen assembly provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system. Contaminates enter your oil system via engine ware, extended time between oil changes and other internal engine sources. These contaminates can interfere with the proper oil flow and pressure spring functions resulting in engine damage and/or failure. Melling suggests that a new properly installed oil pump pick-up tube/screen be a part of every oil pump installation. Several Melling oil pump applications are offered with an oil screen included.

Product Features:

• Manufactured from high quality durable materials for long wear
• Precision engineering protects the engine from dirt and contaminants
• Designed for long-life and worry-free performance
• Meets or exceeds original equipment specifications

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:

• Meets or exceeds all original equipment specifications
• Application specific design to ensure a perfect fit
• Engineered for the sealing repair environment
• Validated for fit, form and function
• Unsurpassed quality you can trust

A new Melling oil pump shaft is recommended to complete every new oil pump install. Melling offers a complete line of high quality shafts for domestic and import pump applications. A new oil pump shaft is necessary due to possible metal fatigue, cracking

Product Features:

• Manufactured from high quality materials for consistent durable wear
• Precision engineered for optimum fit and function
• Designed for long-life and worry-free performance
• Meets or exceeds original equipment specifications

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

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

Product Features:

• Direct replacement – this engine oil filter cap is designed to match the fit and function of the original cap on specified vehicles
• Restores functionality – reliable replacement for an original part that is missing or cracked due to heat and 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

All intercoolers are designed and tested to match or exceed OE specifications for form, fit and performance with a clear focus on obtaining the highest heat transfer performance possible through use of quality materials and manufacturing processes to ensure optimal cooling.

Product Features:

• CARQUEST intercoolers are superior quality parts that meet or exceed OE specifications.
• Premium quality and performance is ensured through air-to-air wind tunnel testing.
• All intercooler core tubes are fitted with internal fins to ensure proper cooling of turbocharged air to increase intake air density while lowering its temperature, and providing increased engine efficiency.
• Cast aluminum manifolds are TIG welded to core headers to increase strength and durability.
• CARQUEST intercooler manifolds are ribbed just like the OE to prevent excessive breathing under pressure cycling.
• CARQUEST intercooler brackets are flanged to increase strength and rigidity for mounting.
• CARQUEST intercoolers include mounting grommets and hardware to make replacement easier.

New Platinum Pro Charge Air Cooler/Intercooler, 6.6 Liter V8 Turbo Diesel

Product Features:

• 6.6 Liter V8 Turbo Diesel, Made Of Aluminum
• Meets All Federal Motor Safety Standards
• No Drilling Needed For Installation
• No Modifications Needed For Installation
• Direct Fit Replacement For Your Vehicle
• Same Form Fit And Function As OE
• Check Out The Large Selection Of Parts Available For Your Vehicle