2003 GMC Sierra 3500 Parts

Performance parts and accessories that fit your 2003 GMC Sierra 3500. Shop Wehrli, Weapon R, aFe and more. Every part is checked against your vehicle before it ships.

• WehrliWehrli 01-04 Chevrolet 6.6L LB7 Duramax 3in Y-Bridge Kit - Candy TealMPN wcfWCF100693-CT$945.75In stock
• WehrliWehrli 01-04 Chevrolet 6.6L LB7 Duramax S400 Twin Turbo Kit (No Turbo) - Bengal SilverMPN wcfWCF100570-BS$3351.35In stock
• WehrliWehrli 01-04 Chevrolet 6.6L LB7 Duramax High Flow Intake Bundle Kit - Kiwi GreenMPN wcfWCF100712-KIWI$2026.33In stock
• WehrliWehrli 01-04 GM Duramax LB7 4in Intake Kit - Bengal SilverMPN wcfWCF100190-BS$528.65In stock
• WehrliWehrli 01-04 GM Duramax LB7 Driver Side 3in Intercooler Pipe - Bengal RedMPN wcfWCF100349-BR$305.55In stock
• WehrliWehrli 01-04 Duramax LB7 4in High Flow Intake Horn - Brizzle BlueMPN wcfWCF100535-BRZ$173.63In stock
• Weapon RWeapon R 01-04 Chevrolet Silverado 2500 HD 6.6L Secret Weapon IntakeMPN wpn601-116-101$466.13In stock
• WehrliWehrli 01-04 Duramax LB7 4in High Flow Intake Horn - Deore GoldMPN wcfWCF100535-DG$197.88In stock
• WehrliWehrli 01-04 GM Duramax LB7 Driver Side 3in Intercooler Pipe - Bengal GreyMPN wcfWCF100349-BG$305.55In stock
• aFeaFe BladeRunner 3in Black Intercooler Hot Cold Side Tubes Combo 02-04 GM Diesel Trucks 6.6L V8 (td)MPN afe46-20045$545.00In stock
• WehrliWehrli 01-04 Chevrolet Duramax LB7 4in Intake Kit - Bengal BlueMPN wcfWCF100190-BB$528.65In stock
• WehrliWehrli 01-04 Chevrolet 6.6L Duramax LB7 2in Stainless Up Pipe Kit w/Gaskets - Twin TurboMPN wcfWCF100589$619.83In stock
• WehrliWehrli 01-04 Chevrolet Duramax LB7 4in. Stage 2 Intake Kit - Illusion BlueberryMPN wcfWCF100300-IBB$668.33In stock
• Victor ReinzMAHLE Original Cadillac Escalade 06-02 Engine Kit Gasket SetMPN vic953563$841.54In stock
• WehrliWehrli 01-04 Duramax LB7 4in High Flow Intake Horn - Candy RedMPN wcfWCF100535-CR$197.88In stock
• PowerStopPower Stop 07-10 GMC Sierra 3500 HD Rear Z36 Coated Kit w/CalipersMPN psbCPR5337-36$629.54In stock
• WehrliWehrli 01-04 GM Duramax LB7 4in Intake Kit - Brizzle BlueMPN wcfWCF100190-BRZ$528.65In stock
• WehrliWehrli 01-04 GM Duramax LB7 4in Intake Kit - Chevy OrangeMPN wcfWCF100190-CRO$528.65In stock
• WehrliWehrli 01-04 GM Duramax LB7 Driver Side 3in Intercooler Pipe - Brizzle BlueMPN wcfWCF100349-BRZ$305.55In stock
• WehrliWehrli 01-04 Chevrolet 6.6L LB7 Duramax High Flow Intake Bundle Kit - Sparkle Granny SmithMPN wcfWCF100712-SGS$2123.33In stock
• Fleece PerformanceFleece Performance 01-04 GM Duramax LB7 Freedom Cylinder Head w/Cupless Injector Bore (Driver Side)MPN fpeFPE-61-10001-D-CL$1199.00In stock
• WehrliWehrli 01-04 Chevrolet 6.6L LB7 Duramax High Flow Intake Bundle Kit - Bronze ChromeMPN wcfWCF100712-BC$2123.33In stock
• WehrliWehrli 01-04 Chevrolet Duramax LB7 4in Intake Kit - WCFab RedMPN wcfWCF100190-Red$577.15In stock
• WehrliWehrli 01-04 GM Duramax LB7 Driver Side 3in Intercooler Pipe - Fine Texture BlackMPN wcfWCF100349-FTB$305.55In stock