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

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-2403-4030

D.S.S. FX-Series Forged 2618 Alloy Piston and Ring Kits K2-2403-4030

Piston Set, 383 SBC K2-FX Series -16cc Dish Top Piston Set. 4.030 bore

Part Number: DMS-K2-2403-4030

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 K2-2403-4060

Piston Set, 383 SBC K2-FX Series -16cc Dish Top Piston Set. 4.060 bore

Part Number: DMS-K2-2403-4060

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

Whiteline Sway Bars for 2002-2008 FORESTER - BSK024

Sway Bars, Front and Rear, Solid, Steel, Silver Powdercoated, Subaru, Kit

Part Number: WHL-BSK024

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Haltech Nexus Rebel LS Terminated Harnesses HT-186500

Wiring Harness, Nexus Rebel, ECU, Plug-and-Play, Standard Length, Chevy, LS, Each

Part Number: HTH-HT-186500

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

PowerStop Z23 Evolution Sport Brake Upgrade Kits with Calipers for 2003-2011 TOWN CAR - KC4486

Disc Brake Kits, Z23 Evolution Sport Brake Upgrade Kits with Calipers, Front and Rear, Cross-drilled/Slotted Rotors, Red Calipers, Lincoln, Kit

Part Number: PWR-KC4486

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Spicer Drivetrain Products 35 Spline Differential Carriers Dana 60 707097-4X

Differential Carriers, Dana 60, Clutch-type, 10-bolt, 35-spline, Ductile Iron, Fits 4.56 and Numerically Higher Gear Ratios, Rear, Dana 60, Ford, Kit

Part Number: SDH-707097-4X

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Catco Direct-Fit Catalytic Converters for 1998-2003 ML320 - 4214

Catalytic Converter, Direct-Fit, Stainless Steel, Mercedes-Benz, Each

Part Number: CTO-4214

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

MAHLE Original Pistons 224-3454WR

Piston With Rings - FO 6.0L DIESEL V8 (144050WR-STD) W/PCR

Part Number: MAH-2243454WR

Not Yet Reviewed

Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Belltech Lowering Kits with Street Performance Shock Absorbers for 1998-2003 DAKOTA - 803SP

Suspension Kit ;

Part Number: BEL-803SP

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

Nitrous Express 4-Bolt Plate Nitrous Systems for GM LS Engine 20933-00

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

Part Number: NEX-20933-00

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

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Estimated Ship Date: Jan 13, 2026 if ordered today

Aldan American Track Comp Coilover Kits for 2003-2010 VIPER - G3SBF2

Coilover Kit, Front, Twin-Tube, Aluminum, Silver Anodized, 550 lbs./in., Dodge, Pair

Part Number: AAX-G3SBF2

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

Manley Platinum Series Pistons 592110C-8

Pistons, Forged Flat, 3.910 in. Bore, Chevy, Set of 8

Part Number: MAN-592110C-8

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

Manley Platinum Series Pistons 592670C-8

Pistons, Forged, Flat, 4.070 in. Bore, Chevy, Small Block, Set of 8

Part Number: MAN-592670C-8

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

Dorman Driveshafts for 2003 F-450 SUPER DUTY - 946-611

Rear Driveshaft

Part Number: RNB-946-611

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

AP Exhaust Direct-Fit Catalytic Converters for 2003 LS, THUNDERBIRD - 643066

Catalytic Converters, Direct-Fit, Stock Flange Inlet, 2.00 in. Slip Fit Outlet, 54.50 in. Overall Length, Ford, Lincoln, Each

Part Number: APH-643066

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Frostbite Performance Cooling Aluminum Radiators FB309

Radiators, Crossflow, Aluminum, Natural, Chevrolet, GMC, LS Engine Swap, Each

Part Number: FBR-FB309

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

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ Pro LS Swap Radiators SUM-384084

5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Rough Country N3 Suspension Lift Kits for 1995-2004 TACOMA - 74130

Suspension Lift, N3 Series, 6.00 in. Front, 6.00 in. Rear, Toyota, 4WD, RWD, Kit

Part Number: ROU-74130

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

Holley EFI Systems Wiring Harnesses 558-115

Wiring Harnesses, Holley EFI, Gen III Hemi, Throttle Position, Idle Air Controls, Factory Connectors, Chrysler, Dodge, Jeep, Hemi, Early Model, Each

Part Number: HLY-558-115

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

The Driveshaft Shop Driveshafts for 1999-2003 F-150 - 610071

Driveshaft, Rear, Balanced, One-piece, Assembled, Aluminum, 4.00 in. Diameter, Ford, Each

Part Number: DSS-FDSH28-A

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

South Bend Clutch - Clutch Kits for 1992-2006 VIPER - K05088-HD-OCE

Clutch Kit, K05088-HD-OFE, Stage 2, Endurance, Flywheel Not Included, Kit

Part Number: SBB-K05088HDOCE

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

South Bend Clutch Stage 2 Endurance Clutch Kits K70319F-HD-OCE

Clutch Kit, Stage 2 Endurance, Single, 0.880 in. - 28-spline, Organic/Ceramic Disc, Pressure Plate, Flywheel, Volkswagen, 1.9L Diesel, Kit

Part Number: SBB-S0120

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Cometic Street Pro Top-End Gasket Kits PRO3005T-067

Domestic Street Pro Kit, Top End Gasket Kit, Ford 6.0L Powerstroke 18mm Dowels 2003-06

Part Number: CGT-PRO3005T-067

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

Mahle PowerPak Piston and Ring Kits 197719205

Piston and Ring Kit, PowerPak, Forged, Chevy, LS, 6.0L, 6.2L, Kit

Part Number: MLE-197719205

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Mahle PowerPak Piston and Ring Kits 930256072

Piston and Ring Kit, Forged, 3.572 in. Bore, Ford, Kit

Part Number: MLE-930256072

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

PowerStop Z23 Evolution Sport Brake Upgrade Kits with Calipers for 2001-2005 JETTA - KC899

Disc Brake Kits, Pads, Drilled/Slotted Rotors, Red Calipers, Front/Rear, Volkswagen, Kit

Part Number: PWR-KC899

Not Yet Reviewed

Estimated Ship Date: Jan 2, 2026 if ordered today

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Estimated Ship Date: Jan 2, 2026 if ordered today

2003 Parts and Accessories