2003 GMC SIERRA 1500 HD Parts & Accessories

Bilstein B8 5100 Series Shocks 24-187183

Shock, 5100 Series, Monotube, Lifted Front, Chevy, GMC, Each

Part Number: BSN-24-187183

4.75 out of 5 stars ( 8 )

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Summit Racing™ 88 Series 50 Ohm 8.5mm Ignition Wires SUM-887828

Summit Racing™ 88 Series 50 Ohm 8.5mm Ignition Wires SUM-887828

Spark Plug Wires, 88 Series, Street / Strip, 8.5mm, Black, 50 Ohm, 9" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-887828

4.42 out of 5 stars ( 26 )

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Fel-Pro Intake Manifold Gaskets MS 92211

Intake Manifold Gaskets, Replacement, Stock Port Style, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Chevy Small Block LS, Set

Part Number: FEL-MS92211

5.0 out of 5 stars ( 7 )

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Moog Replacement Tie Rod Ends ES3609

Tie Rod End, OE Style, Front Outer, Left or Right, Serviceable, Chevy, GMC, Hummer, Each

Part Number: MOG-ES3609

4.65 out of 5 stars ( 17 )

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Melling Timing Chain Sets 48561T-9

Timing Chain and Gear Sets, Double Roller, Seamless Timing Chain, 3-bolt, Billet Steel Cam Gear, Steel Crank Gear, Chevy, GMC, Pontiac, Saab, V8, Set

Part Number: MEL-48561T-9

4.5 out of 5 stars ( 2 )

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Motive Gear Ring and Pinion Sets GM10-411 GM 8.5/8.6 in. 4.11 Gears

Gear, Ring and Pinion, 4.11:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: MGR-GM10-411

5.0 out of 5 stars ( 9 )

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FlowKooler Hi-Flow Mechanical Water Pumps 1669

Water Pump, Hi Flow, Mechanical, High-volume, Aluminum, Natural, Chevy, Pontiac, Each

Part Number: BRA-1669

3.0 out of 5 stars ( 19 )

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Hedman Street Headers 69690

Headers, Street, Shorty, Steel, Temporary Paint, Cadillac, Chevy, GMC, Hummer, Small Block LS, Pair

Part Number: HED-69690

4.56 out of 5 stars ( 34 )

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King XP-Series Main Bearings MB5013XP 001

Main Bearings, XP-Series, Copper/Lead/Nickel, 0.001 in. Crankshaft Undersize, Chevy, 4.8, 5.3, 5.7, 6.0L, Set

Part Number: KGB-MB5013XP001

5.0 out of 5 stars ( 1 )

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BD Diesel Exhaust Manifolds 1041400

EXHAUST MANIFOLD KIT CHEVROLET SILVERADO 1500 / GMC SIERRA 1500 V8 2002-2013

Part Number: BDD-1041400

Not Yet Reviewed

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NGK Ignition Coils M5328-8

Ignition Coils, MOD Series, Cadillac, Chevy, GMC, Hummer, Set of 8

Part Number: NGK-49473

Not Yet Reviewed

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Summit Racing™ Step Bars SUM-710101-B

Step Bars, Steel, Black Powdercoated, Round, 3 in. Diameter, Crew Cab, Chevy, GMC, Pair

Part Number: SUM-710101-B

4.17 out of 5 stars ( 6 )

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MechMan Elite Series Billet Alternators B8206370B

Alternators and Generators, Elite Series Billet Alternators, 12 V, 370 amps, Black Anodized, Serpentine, Buick, Cadillac, Chevy, GMC, Hummer, Each

Part Number: MEH-B8206370B

5.0 out of 5 stars ( 2 )

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King XP-Series Rod Bearings CR 807XPN 001

Rod Bearings, XP-Series, .001 in. Crankshaft Undersize, Tri Metal, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807XPN001

Not Yet Reviewed

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Moog Super Strength U-Joints 231

Universal Joint, Super Strength, 1350 Style, Solid, Steel, Each

Part Number: MOG-231

4.45 out of 5 stars ( 11 )

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Summit Racing™ 4 in. Oval Step Bars SUM-710201-B

Step Bars, Oval, Steel, Powedercoated, 4 in. Diameter, Crew Cab, Chevy, GMC, Pair

Part Number: SUM-710201-B

4.75 out of 5 stars ( 8 )

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GMB OE Replacement Water Pumps 130-7340

Water Pump, Mechanical, Aluminum, Natural, Cadillac, Chevy, GMC, 4.8/5.3/6.0L, Each

Part Number: GMB-130-7340

4.59 out of 5 stars ( 41 )

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ACDelco GM Genuine Parts Power Steering Pumps 19420688

Power Steering Pump, GM Genuine, OE Replacement, without Hydro Boost, Does Not Include Pulley, Cadillac, Chevy, GMC, Each

Part Number: ADO-19420688

4.0 out of 5 stars ( 1 )

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Timken Rear Main Seals 100085

Rear Main Seal, 1-Piece, PTFE, Each

Part Number: TMK-100085

3.0 out of 5 stars ( 2 )

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Pacer Performance Flexy Flares Fender Flares 52-168

Fender Flare, Front or Rear, Black Synthetic Rubber, Universal, 25 ft. Roll, Each

Part Number: PPP-52-168

4.33 out of 5 stars ( 6 )

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MechMan Elite Series Cast Alternators 8206400

Alternators and Generators, Elite Series Cast Alternators, 12 V, 400 amps, Serpentine, Buick, Cadillac, Chevrolet, GMC, Hummer, Olds, Pontiac, Each

Part Number: MEH-8206400

Not Yet Reviewed

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Summit Racing™ Ring and Pinion and Differential Pro Packs 14-0082

Combo, Differential, Eaton Truetrac, Ring and Pinion, 4.10:1 Ratio, Install Kit, 30 Spline, Rear, GM 8.5 in./8.6, Kit

Part Number: CMB-14-0082

Not Yet Reviewed

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Hays Twister 3/4 Race 3,200-3,600 Stall Torque Converter 97-1H32Q

Hays Twister 3/4 Race Torque Converter 1998- UP GM, 4L60E/4L65E, 3200-3600 RPM stall

Part Number: HAY-97-1H32Q

Not Yet Reviewed

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Fox Racing Shox 2.0 Performance Series Reservoir Smooth Body Shocks 980-24-960

Shock, 2.0 Performance Series Reservoir, Smooth Body, Front, 8.1 in. Travel, 4-6 in. Lift, Chevrolet, GMC, Hummer H2

Part Number: FRS-980-24-960

Not Yet Reviewed

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BDS Suspension Lift Kits BDS739FDSC

01-10 HD 6.5" C/O System w/Rear Springs

Part Number: BDX-BDS739FDSC

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

2003 GMC SIERRA 1500 HD Parts and Accessories