2004 GMC SIERRA 2500 HD - In Stock Filter Options - Vendor In Stock Filter Options Parts & Accessories

Rough Country M1 Suspension Lift Kits for 2001-2010 SIERRA 2500 HD, SILVERADO 2500 HD - 220040

Suspension Leveling & Lift Kits, Lift Kit, M1 Series, Knuckle, Leaf Spring Block, 6.00 in. Front, 6.00 in. Rear, Chevy, GMC, Kit

Part Number: ROU-220040

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2106 AAM/Chrysler/GM 11.5 in. 3.73 Gears

Ring and Pinion Gears,USA Standard 11.5" AAM, 3.73 Ratio Rear Ring & Pinion GearInstall Kit 4.125" OD Inner Pinion Bearing

Part Number: SPZ-10819

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Estimated Ship Date: Feb 20, 2026 if ordered today

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Estimated Ship Date: Feb 20, 2026 if ordered today

Pacific Performance Engineering Exhaust Manifolds 116111400

Exhaust Manifolds, High Silicon Cast Iron, Natural, Chevy, GMC, 6.6L Diesel, Pair

Part Number: PPE-116111400

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USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2107 AAM/Chrysler/GM 11.5 in. 4.11 Gears

Ring and Pinion Gears,USA Standard 11.5" AAM, 4.11 Ratio Rear Ring & Pinion GearInstall Kit 4.125" OD Inner Pinion Bearing

Part Number: SPZ-10820

Not Yet Reviewed

Estimated Ship Date: Feb 20, 2026 if ordered today

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Estimated Ship Date: Feb 20, 2026 if ordered today

Fleece Performance Freedom Series DuraMax Cylinder Heads FPE-61-10002-D

Cylinder Head, 2004.5-2005 Factory LLY Duramax Cylinder Head (Driver Side)

Part Number: FLE-FPE6110002D

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Dee Zee Combo Transfer Tanks DZ 91740SB

Liquid Transfer Tanks, Transfer Tank/Tool Box Combos, 50 gal., 54 x 18 x 20 in., Steel, Textured Black Powdercoat, Each

Part Number: DZZ-DZ91740SB

Not Yet Reviewed

Estimated Ship Date: Mar 31, 2026 if ordered today

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Estimated Ship Date: Mar 31, 2026 if ordered today

NOS EFI Nitrous Oxide Systems 02519NOS

Nitrous Oxide System, EFI, Dry, 50 hp, 10 lb. Bottle, Blue, Dodge, Ford, Diesel, Kit

Part Number: NOS-02519NOS

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Yukon Gear & Axle Ring and Pinion Gear and Installation Kit Combos YGK2120 GM 10.5 in. (14-bolt) 4.56 Gears

Ring and Pinion Gears,Yukon Gear & Axle 10.5" GM 14 Bolt, 4.56 Ratio Rear Ring & Pinion GearInstall Kit Package,

Part Number: YGA-10520

Not Yet Reviewed

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

Nitrous Outlet Nitrous Oxide Plate Systems 00-10181-00

Nitrous Outlet Nitrous Oxide Plate Systems 00-10181-00

2003-2013 FAST 102mm Truck Intake Hardline Plate System (50-200HP) (No Bottle)

Part Number: NXO-00-10181-00

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Yukon Gear & Axle Ring and Pinion Sets YG GM11.5-456 AAM/Chrysler/GM 11.5 in. 4.56 Gears

Gear, Ring and Pinion, 4.56:1 Ratio, 2.005 in. Pinion, 30 Spline, 11.500 in. Ring Gear, GM/Chrysler, Set

Part Number: YGA-24443

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

South Bend Clutch Stage 1 Heavy-Duty Clutch Kits K04237-HD

Clutch Kit, Stage 1 Heavy-Duty, Single, 1.375 in. - 10-spline, Organic Disc, Pressure Plate, Chevy, GMC, 8.1L, Kit

Part Number: SBB-K04237-HD

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Dee Zee Transfer Tanks DZ92747XS

AUX/STEEL/LIQ TRNS TANK 92 GAL (STEEL) L-SHAPED 46.75. IN

Part Number: DZZ-DZ92747XS

Not Yet Reviewed

Estimated Ship Date: Apr 1, 2026 if ordered today

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Estimated Ship Date: Apr 1, 2026 if ordered today

WeatherTech AlloyCover Tonneau Covers 8HF020066

Tonneau Cover, AlloyCover, Folding, Aluminum, Black Matte, Chevy, GMC, 6.5 ft. Truck Bed Length, Each

Part Number: MNA-8HF020066

Not Yet Reviewed

Estimated Ship Date: Feb 26, 2026 if ordered today

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Estimated Ship Date: Feb 26, 2026 if ordered today

Pacific Performance Engineering Exhaust Manifolds 116111200

Exhaust Manifolds, High Silicon Cast Iron, Natural, Chevy, GMC, 6.6L Diesel, Pair

Part Number: PPE-116111200

Not Yet Reviewed

Estimated Ship Date: Today

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Pacific Performance Engineering Exhaust Manifolds 116111220

Manifolds and Up-Pipes GM 2002-2004 CA Y-pipe LB7 - Black

Part Number: PPE-116111220

Not Yet Reviewed

Estimated Ship Date: Today

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Pacific Performance Engineering Exhaust Manifolds 116111235

Manifolds and Up-Pipes GM 2002-2004 CA Y-pipe LB7 - Silver

Part Number: PPE-116111235

Not Yet Reviewed

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USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2125

Ring and Pinion Gears,USA Standard 10.5" GM 14 Bolt, 3.73 Ratio Rear Ring & Pinion GearInstall Kit 30 Spline

Part Number: SPZ-10838

Not Yet Reviewed

Estimated Ship Date: Today

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PowerStop Z36 Truck and Tow Brake Upgrade Kits with Calipers for 2004 SIERRA 2500 HD, SILVERADO 2500 HD - KC4423-36

Brake Rotors, Pads, Red Calipers, Drilled/Slotted Rotors, Truck and Tow Pads, Front/Rear, Chevy, Kit

Part Number: PWR-KC4423-36

Not Yet Reviewed

Estimated Ship Date: Today

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Innovators West Drive Pulley Conversion Kits 997

99-06 LS TRUCK 8-RIB CONVERSION KIT - 10% OD

Part Number: INW-997

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

S&B Filters Fuel Tanks 10-1023

Fuel Tank, 62 Gallons, Midship Mount, Polyethylene, Black, Crew Cab/Short Bed, Chevy, GMC, Duramax, Each

Part Number: SBF-10-1023

Not Yet Reviewed

Estimated Ship Date: Today

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RevMax Low Stall Stage 5 Torque Converters A1000-405

Torque Converter, Stage 5 Low Stall, 25-Spline, 13.5 in. Diameter, Allison 1000, Chevy, GMC, Each

Part Number: RVM-A1000-405

Not Yet Reviewed

Estimated Ship Date: Today

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Icon Vehicle Dynamics 2.5 VS PB Shocks 77701P

01-19 GM HD 0-1" REAR 2.5 VS PB / 07-UP GM 1500 4" REAR 2.5 VS PB PAIR

Part Number: IVD-77701P

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Icon Vehicle Dynamics 2.5 VS PB Shocks 77726P

01-10 GM HD 6-8" FRONT 2.5 VS PB PAIR

Part Number: IVD-77726P

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Icon Vehicle Dynamics 2.5 VS PB CDCV Shocks 77727CP

01-16 GM HD 6-8" REAR 2.5 VS PB CDCV PAIR

Part Number: IVD-77727CP

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Icon Vehicle Dynamics 2.5 VS PB Shocks 77727P

01-16 GM HD 6-8" REAR 2.5 VS PB PAIR

Part Number: IVD-77727P

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

2004 GMC SIERRA 2500 HD Parts and Accessories