CHEVROLET Chevy small block Gen III/IV (LS-based engines) Engines & Components

Piston, Pro LS, 4.000 in. Bore, Forged Aluminum, Dish, 0.945 Pin Diameter, Chevy, Each

Part Number: SUM-326S45400012

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

Piston, Pro LS, 4.000 in. Bore, Forged Aluminum, Dish, 0.927 Pin Diameter, Chevy, Each

Part Number: SUM-299S27400012

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

Piston, Pro LS, 4.065 in. Bore, Forged Aluminum, Dish, 0.927 Pin Diameter, Chevy, Each

Part Number: SUM-299S27406512

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Estimated Ship Date: Monday 10/20/2025

Piston, Pro LS, 3.810 in. Bore, Forged Aluminum, Dish, 0.945 Pin Diameter, Chevy, Each

Part Number: SUM-326S45810-7P

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Estimated Ship Date: Monday 10/20/2025

Piston, Pro LS, 4.000 in. Bore, Forged Aluminum, Dish, 0.943 Pin Diameter, Chevy, Each

Part Number: SUM-326S43400012

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Estimated Ship Date: Monday 10/20/2025

Piston, Pro LS, 4.065 in. Bore, Forged Aluminum, Dome, 0.927 Pin Diameter, Chevy, Each

Part Number: SUM-299S274065-2

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Estimated Ship Date: Monday 10/20/2025

Piston, Pro LS, 4.030 in. Bore, Forged Aluminum, Dish, 0.945 Pin Diameter, Chevy, Each

Part Number: SUM-326S45403012

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Estimated Ship Date: Monday 10/20/2025

Piston, Pro LS, 4.070 in. Bore, Forged Aluminum, Dish, 0.927 Pin Diameter, Chevy, Each

Part Number: SUM-110S27407021

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Estimated Ship Date: Monday 10/20/2025

Piston, Pro LS, 4.030 in. Bore, Forged Aluminum, Flat Top, 0.945 Pin Diameter, Chevy, Each

Part Number: SUM-326S454030-2

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Estimated Ship Date: Monday 10/20/2025

Lifter Valley Plates, LS Valley, Billet Aluminum, Trussed, Natural Finish, 10-bolt Pattern, Chevy, LS, 4.8L, 5.3L, 5.7L, 6.0L, Each

Part Number: HLY-241-260

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

Replacement Timing Chain, True Roller, Chevy, Pontiac, 0.010 in. Reduced Center, Each

Part Number: CLO-9-131-10

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

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• Special Order

Crankcase Evacuation System, Replacement Nipple Fitting, Natural, GM LS Engine, Valve Cover, Single Tab, -12AN, Each

Part Number: MOR-68845

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/20/2025

Replacement Timing Chain, True Roller, Chevy, Pontiac, Each

Part Number: CLO-9-131

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

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Power Steering Bracket, GM Type 2, Driver Side, Cylinder Head Mount, Billet Aluminum, Natural, Chevy, Kit

Part Number: PFN-MB15KD

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

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Comp Series LS9 DS 4.065B/3.622S/6.125R/

Part Number: DPP-11588-R1

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Estimated Ship Date: Nov 25, 2025 if ordered today

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AN Block Adapters, -12 AN Adapters, Clear Anodized, Chevy, LS, Kit

Part Number: PGP-PRP-6865

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Piston Rings, Plasma-moly, 4.059 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-2M4860060

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

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Ignition Coil Cover Inserts, Insert Badge, Speedcover, Oval Logo, Aluminum, Clear Anodized, Pair

Part Number: VSM-IBK-0016

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

5.3L 327 LS PISTONS 2V (EA)

Part Number: SUM-17400C-1

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Estimated Ship Date: Monday 10/20/2025

5.3L LS PISTON 2V (EA)

Part Number: SUM-17401C-1

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

Timing Gear, Adjustable, Billet Steel, 3-Bolt, 1X, Single Row, 0.010 in. Line Hone, Chevy LS, Each

Part Number: SUM-G6643-1X-010

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

Engine Timing Set, Stock Replacement-3 p

Part Number: MEL-3-3SRH60SF

Not Yet Reviewed

Estimated Ship Date: Nov 13, 2025 if ordered today

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Belt Tensioner, Accu-Drive, Chevy, Pontiac, Each

Part Number: CEL-49296

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/20/2025

Valve, Exhaust, Stainless Steel, 1.600 in. Diameter, 8.0mm Stem, 4.915 in. Length, GenX®, GM LS, Each

Part Number: TFS-30600214-1

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

Main Bearings, Bi-Metal, Silicon Aluminum, 0.020 in. Crankshaft Undersize, GM Gen III/IV LS, Set of 5

Part Number: SUM-172320

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025