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$20 Off $250 / $40 Off $500 / $80 Off $1,000
Use Promo Code: TREAT

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2015 GMC SIERRA-3500-HD Parts and Accessories

Individual Parts

Results 1 - 25 of 579

Nitrous Oxide System, 4-Bolt Throttle Body, 90mm Plate, Wet, +400 hp, 10 lb. Bottle, Chevy, LS, Kit

Part Number: NEX-20934-10

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Headers, Cat4ward, Stainless Steel, Titanium Ceramic Coated, Cadillac, Chevy, GMC, SUV, Pickup, 4.8, 5.3L

Part Number: JBA-1850S-2JT

4.93 out of 5 stars ( 15 )

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Lifters, Short Travel XD Hydraulic Roller, Horizontal Link Bar, 0.842 in. O.D., Chevy, GMC, Small Block LS, Set of 16

Part Number: CCA-15956XD-16

3.5 out of 5 stars ( 2 )

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This product may not be eligible for select promotional offers

Fuel Pump, PowerFlo In-Tank Lift Pump Assembly, Electric, 12 V, Designed for 6.5 ft. Short Bed Trucks Only, Chevy, GMC, 6.6L Diesel, Each

Part Number: FLE-FPE34563

Not Yet Reviewed

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Fuel pump, Electric, In-Tank, Phantom 340, Gasoline, E85, Chevy, GMC, Each

Part Number: AEI-18356

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Exhaust System, Cat-back, FlowFX, 409 Stainless Steel, 5.00 in. Black Ceramic Tips, Dual Exit, Chevrolet, GMC, 6.0L, Kit

Part Number: FLO-717931

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

This product may not be eligible for select promotional offers

Lifter, Sportsman, Mechanical Roller, Vertical Link, 0.842 in. Diameter, w/ Bearing, Seat Height 2.210 in., GEN III/IV LS, Chevy, Set of 16

Part Number: CCA-96956-16

Not Yet Reviewed

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This product may not be eligible for select promotional offers

Suspension Load Leveling Kit

Part Number: FIP-2715

Not Yet Reviewed

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Liquid Transfer Tank, Front of Truck Bed Location, 110 Gallons, Steel, Black Powdercoated, Chevy, Dodge, Ford, GMC, Isuzu, for Nissan, Toyota, Each

Part Number: DZZ-DZ91753XSB

Not Yet Reviewed

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Nitrous Oxide System, 3-Bolt Throttle Body, Wet, +350 hp, 10 lb. Bottle, GM, LS, Kit

Part Number: NEX-20935-10

3.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Nitrous Oxide System, 4-Bolt Throttle Body, 102mm Plate, Wet, +400 hp, 10 lb. Bottle, Chevy, LS, Kit

Part Number: NEX-20933-10

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Radiator, Performance, Crossflow, 2 Rows, Aluminum, Natural, Chevy, GMC, 6.6L Diesel, Each

Part Number: MIO-MRAD-DMAX-11

Not Yet Reviewed

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This product may not be eligible for select promotional offers

Fuel Injectors, 1,000 cc/min., 95 lb/hr., Chevy, Small Block LS, Set of 8

Part Number: DWK-16ULS10008

Not Yet Reviewed

Estimated Ship Date: Oct 30, 2025 if ordered today

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Estimated Ship Date: Oct 30, 2025 if ordered today

Ring and Pinion Gears, 3.73:1 Ratio, 11.500 in. Ring Gear, Chrysler 11.5 in., GM 11.5 in., Set

Part Number: YGA-24441

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converters 21-252

Mail - In Rebate

Rebate amount based on part(s) total.

Rebate Expires: 12/31/2025

Buy Converter and get up to $75 back after sending in your old one! Please visit www.magnaflow.com/pages/retailer-recycling-program

Buy a Magnaflow Converter and get UP TO $75 back after sending in your old OEM one! Visit www.magnaflow.com/pages/retailer-recycling-program to begin the rebate redemption process. Valid on purchases made between 1/1/25 and 12/31/25. Open to legal residents of the 50 United States and District of Columbia. Only OE (original equipment) converters are eligible for a refund. Rebate will be in the form of a Visa Prepaid card. Please allow 4-6 weeks to receive rebate.

Catalytic Converter, OEM Grade, Federal/EPA Compliant, Direct-Fit, Chevy, GMC, 6.0L, Each

Part Number: MPE-21-252

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Oct 27, 2025 if ordered today

  • Mail - In Rebate

    Rebate amount based on part(s) total.

    Rebate Expires: 12/31/2025

    Buy Converter and get up to $75 back after sending in your old one! Please visit www.magnaflow.com/pages/retailer-recycling-program

    Buy a Magnaflow Converter and get UP TO $75 back after sending in your old OEM one! Visit www.magnaflow.com/pages/retailer-recycling-program to begin the rebate redemption process. Valid on purchases made between 1/1/25 and 12/31/25. Open to legal residents of the 50 United States and District of Columbia. Only OE (original equipment) converters are eligible for a refund. Rebate will be in the form of a Visa Prepaid card. Please allow 4-6 weeks to receive rebate.

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Estimated Ship Date: Oct 27, 2025 if ordered today

This product may not be eligible for select promotional offers

Control Arm, Ball Joint, Steel, Black Powdercoated, Front Upper, Chevy, GMC, Pair

Part Number: MMC-52314

Not Yet Reviewed

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AirDog II-5G, DF-165-5G 2015-2016 Chevy Duramax

Part Number: PAD-A7SABC513

Not Yet Reviewed

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Carburetor and Manifold Combo, Performer RPM Air-Gap Vortec Manifold, 800 cfm AVS2 Carb, Chevy, Vortec, 5.0L, 5.7L

Part Number: EDL-2029

Not Yet Reviewed

Estimated Ship Date: Oct 27, 2025 if ordered today

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Estimated Ship Date: Oct 27, 2025 if ordered today

This product may not be eligible for select promotional offers

Reman Trans Ctrl Mod

Part Number: RNB-609-211

Not Yet Reviewed

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Bumper, Fabricated, Steel, Black Powdercoated, Rear, Chevrolet, GMC, Each

Part Number: ROU-10779

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

This product may not be eligible for select promotional offers

Fuel pump, Electric, In-Tank, Phantom 450, Gasoline, E85, Chevy, GMC, Each

Part Number: AEI-18358

Not Yet Reviewed

Estimated Ship Date: Oct 22, 2025 if ordered today

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Estimated Ship Date: Oct 22, 2025 if ordered today

Tonneau Cover, HF350M Series, Hard, Folding, Hook and Loop, Aluminum, Black, 6 1/2 ft. Truck Bed Length, Chevrolet, GMC, Each

Part Number: LER-631170

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Tonneau Cover, BakFlip G2, Folding, Aluminum, Black, Chevy, GMC, 8 ft. Truck Bed Length, Each

Part Number: BAK-226122

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2025 if ordered today

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Estimated Ship Date: Nov 24, 2025 if ordered today

This product may not be eligible for select promotional offers

Control Arms, Tubular, Upper, Steel, Powdercoated, Ball Joints, Polyurethane Bushings, Greasable, Chevrolet, GMC, HD, Kit

Part Number: SPX-SMX-11HDUCA

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 13, 2025 if ordered today

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Estimated Ship Date: Oct 13, 2025 if ordered today

Catalytic Converters, Direct-Fit, Two Stock Flange Inlets, One Stock Flange Outlet, Ceramic Honeycomb Substrate, 59.00 in. Length, Chevy, GMC, Each

Part Number: APH-645154

Not Yet Reviewed

Estimated Ship Date: Oct 24, 2025 if ordered today

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Estimated Ship Date: Oct 24, 2025 if ordered today

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