2003 - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Moroso Billet Aluminum Valve Covers 68476

Valve Covers, 2.50 in. Tall, Centerbolt, Billet Aluminum, Natural, Moroso Logo, Includes Built-in Coil Mounts, Chevrolet, Small Block LS, Pair

Part Number: MOR-68476

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Walker CalCat Direct-Fit Catalytic Converters for 2003-2004 EXPEDITION - 83552

Converter-CalCat-Direct Fit

Part Number: WLK-83552

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

BD Diesel Build-It Stage 4 Transmission Kits 1062014

Automatic Transmission Rebuild Kit, Build-It Stage 4, Bands, Clutches, Dodge, 48RE, Kit

Part Number: BDD-1062014

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

Wiseco European Piston and Ring Kits KE325M8425

Piston And Ring Kit, Forged, Dish, 84.25mm Bore, BMW, M54B30, 9.0:1 Compression, Set of 6

Part Number: WIS-KE325M8425

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

PowerStop Z26 Street Warrior Brake Upgrade Kits with Calipers for 1999-2004 MUSTANG - KC1305C-26

Disc Brake Kits, Z26 Street Warrior Performance Brake Kits, Front and Rear, Cross-drilled/Slotted Rotors, 1-piston Red Calipers, Ford, Kit

Part Number: PWR-KC1305C-26

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Yukon Gear & Axle Ring and Pinion Gear and Installation Kit Combos YGK2119 GM 10.5 in. (14-bolt) 4.11 Gears

Ring and Pinion Gears,Yukon Gear & Axle 10.5" GM 14 Bolt, 4.11 Ratio Rear Ring & Pinion GearInstall Kit Package,

Part Number: YGA-10519

Not Yet Reviewed

Estimated Ship Date: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered today

Belltech Lowering Kits with Street Performance Shock Absorbers 655SP

Suspension Kit ;

Part Number: BEL-655SP

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

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Estimated Ship Date: Jan 15, 2026 if ordered today

Belltech Lowering Kits with Street Performance Shock Absorbers 653SP

Suspension Kit ;

Part Number: BEL-653SP

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

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Estimated Ship Date: Jan 15, 2026 if ordered today

PowerStop Z23 Evolution Sport Brake Upgrade Kits with Calipers for 2003-2009 GX470 - KC2422A

Disc Brake Kit, Z23 Evolution Sport Brake Upgrade with Calipers, Front and Rear, Lexus, Kit

Part Number: PWR-KC2422A

Not Yet Reviewed

Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

Summit Racing™ Diesel Performance Pistons SUM-PWER7375

Ford 7.3 Powerstroke, 1994-03, 4.140 in. .75mm oversize, Standard Height, 40.1cc Piston Set

Part Number: SUM-PWER7375

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Wiseco Professional Series Piston Kits K0041X2

Wiseco Professional Series Piston Kits K0041X2

Piston and Ring Kit, Forged, Dome, 3.800 in. Bore, Chevy, Small Block LS, Kit

Part Number: WIS-K0041X2

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Eaton Detroit Lockers Dana 35 162C56A

Differential, Eaton Detroit Locker, 27-Spline, Dana 35, Each

Part Number: ETN-162C56A

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 22, 2026 if ordered today

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Estimated Ship Date: Jan 22, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-4852-3572

Piston Set, 4.6 Modular K3-FX Series -4cc 4V Flat Top Piston Set. 3.572 bore

Part Number: DMS-K3-4852-3572

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-4894-3681

Piston Set, 5.4 / 5.8 Modular 5.4 - 5.8 K3-FX Series -20.5cc No Valve Relief Dish Top Piston Set. 3.681 bore

Part Number: DMS-K3-4894-3681

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-4816-3572

Piston Set, 4.6 Modular K3-FX Series -18cc 2V PI/TW Dish Piston Set. 3.572 bore

Part Number: DMS-K3-4816-3572

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins K3-2860-3898

Pistons, Rings, FX-Series, XR Wrist Pins, Forged, 5.00cc Flat, 3.898 in. Bore, Chevy LS, Set of 8

Part Number: DMS-K3-2860-3898

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins K3-2820-4030

Pistons, Rings, FX-Series, XR Wrist Pins, Forged, 5.00cc Flat, 4.030 in. Bore, Chevy LS, Set of 8

Part Number: DMS-K3-2820-4030

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins K3-2831-4030

Pistons, Rings, FX-Series, XR Wrist Pins, Forged, 10.00cc Dish, 4.030 in. Bore, Chevy LS, Set of 8

Part Number: DMS-K3-2831-4030

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins K3-2902-3898

Pistons, Rings, FX-Series, XR Wrist Pins, Forged, 6.00cc Dome, 3.898 in. Bore, Chevy LS, Set of 8

Part Number: DMS-K3-2902-3898

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins K3-2920-4030

Pistons, Rings, FX-Series, XR Wrist Pins, Forged, 5.00cc Flat, 4.030 in. Bore, Chevy LS, Set of 8

Part Number: DMS-K3-2920-4030

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins K3-2903-3780

Pistons, Rings, FX-Series, XR Wrist Pins, Forged, 15.00cc Dish, 3.780 in. Bore, Chevy LS, Set of 8

Part Number: DMS-K3-2903-3780

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins K3-2903-3810

Pistons, Rings, FX-Series, XR Wrist Pins, Forged, 15.00cc Dish, 3.810 in. Bore, Chevy LS, Set of 8

Part Number: DMS-K3-2903-3810

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-2106-4030

-28cc Dish Top SBC 23 Degree Forged 2618

Part Number: DMS-K3-2106-4030

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-2478-4165

k3-2478-4165-434-small-block-chevy-k3-fx-series-4cc-dome-top-forged-piston-set-4-165-bore

Part Number: DMS-K3-2478-4165

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits with XR Wrist Pins K3-2408-4060

k3-2408-4060-383-small-block-chevy-k3-fx-series-4cc-dome-top-forged-piston-set-4-060-bore

Part Number: DMS-K3-2408-4060

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

2003 Parts and Accessories