CHEVROLET Chevy small block Gen III/IV (LS-based engines) Summit Racing Parts and Accessories

Pro LS 2618 Forged Piston, 3.780 bore, 1.110 C.H., 5cc dish, 4.000in. Stroke, 6.125 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-1109273780-5

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Oxygen Sensor Harness Extensions, 12 in. long, Trapezoidal 4-Pin Connector, GMC, Chevy, Pair

Part Number: SUM-890168

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Main Bearings, Bi-Metal, Silicon Aluminum, 0.010 in. Crankshaft Undersize, GM Gen III/IV LS, Set of 5

Part Number: SUM-172310

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS 2618 Forged Piston, 3.820 bore, 1.110 C.H., 5cc dish, 4.000in. Stroke, 6.125 Rod, NA/Boost/Nitrous,Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-1109273820-5

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS 2618 Forged Pistons. 3.785 bore, 1.326 C.H., 2cc dome, Std. Stroke, .Gen.4 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-326943785-2F

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 377 Cid., 4.075 bore, 3.622 stroke, 6.125 rod, 12cc dish, 9.9:1 @ 65cc, 9.4:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR36L07512

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Valley Cover Gasket, Rubber/Steel, Chevy GM, GEN III, LS-1, 4.8, 5.3, 5.7, 6.0, Each

Part Number: SUM-G2626

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

Water Neck, Thermostat Housing, Cast Aluminum, Black, 60 Degree, Swivel, Chevrolet, LS, Each

Part Number: SUM-370998B

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Thermostat, 160 Degree, Bypass Valve, Copper/Brass, GM, Each

Part Number: SUM-367-160

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Pro LS 4340 Piston and Rod Kit, 377 Cid., 4.075 bore, 3.622 stroke, 6.125 rod, 2cc dome, 11.6:1 @ 65cc, 10.9:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR36L0752

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

• Free Shipping

Header bolt kit, Extreme Duty, Chromoly, Black Oxide, Chevy LS, 6 pt., Set of 12

Part Number: SUM-910502

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Head Gasket, Multi-Layer Steel, GM, LS Engine, 4.8L and 5.3L Truck, Pair

Part Number: SUM-111650

1.0 out of 5 stars ( 3 )

Estimated Ship Date: Jan 12, 2026 if ordered today

Header Flanges, Steel, 3/8 in. Thick, 1.75 in. Diameter Round Port, Chevy, LS, Pair

Part Number: SUM-670203

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

• Free Shipping

Radiator and Fan Shroud Combo, Aluminum, Natural, 3-Row, LS Swap, Chevy, GM, Each

Part Number: SUM-384062-KIT1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Water Manifold, Gen. 3 and 4 LS, 7-port at sides, upper and front, -12 AN ORB plugs, M-12 x 1.5 AND 3/8 NPT temp sensor provisions, Red, Each.

Part Number: SUM-390LSRED

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Headers, Block Hugger, Steel, Natural, Street Rod 1923-1949 with Chevy GM, LS/LSX, Gen III/IV, Pair

Part Number: SUM-G9065

3.4 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS 2618 Forged Piston, 4.065 bore, 1.110 C.H., 21cc dish, 4.000in. Stroke, 6.125 Rod, NA/Boost/Nitrous, Cathedral/Rect., 6.2 LS3 L92 LS9, Set of 8

Part Number: SUM-110927406521

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Cam and Lifter kit, Stage 3 Pro LS Cam - Extra Valve Clearance Version, 230/242 113+3, .625/.605 Lift, 3-bolt, 5.3, 5.7, 6.0, 6.2, 7.0L

Part Number: SUM-K8710R1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Timing Cover, 2-Piece, Cast Aluminum, Black Powdercoated, Without Cam Sensor, Chevy, LS, V8, Each

Part Number: SUM-G6322

2.71 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

• Free Shipping

Combo, LS Fuel Filter/Regulator, -6 AN Fittings, Black Fittings, Sold as a Kit

Part Number: CMB-03-0263

4.19 out of 5 stars ( 16 )

Estimated Ship Date: Tomorrow

Pro LS 2618 Forged Pistons. 3.820 bore, 1.299 C.H., 2cc dome, Std. Stroke, .6.125 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-2999273820-2

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Intake Manifold, Fuel Injected, Tall Profile, 102mm Bore Size, Aluminum, Black, Chevy, LS3, L92, Each

Part Number: SUM-226124BL

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Radiator, Aluminum, Natural, 3-Row, LS Swap, Chevy, Pontiac, Each

Part Number: SUM-384082

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

• Free Shipping

Oil Filter, Canister, 22mm x 1.5 Thread, 3.350 in. High, common on 2007+ LS, Each

Part Number: SUM-127001

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Brake Rotors, 13 Inch, Cross-Drilled/Slotted, Iron, Zinc Dichromate Plated, Rear, Cadillac, Chevy, GMC, Pair

Part Number: SUM-BRC-66045PR

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping