1966 Pistons - 4.040 in. Bore (in.) - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Speed-Pro Hypereutectic Pistons H273CP40

Pistons, Hypereutectic, Flat, 4.040 in. Bore, Ford, Set of 8

Part Number: SLP-H273CP40

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Summit Racing™ Forged Pro Pistons SUM-SBC327040

Forged Pro pistons for SB Chevy 327, 4.040 bore, 1.671 C.H., 3.25 in. stroke, 5.7 in. rod, 0cc net vol. dome. 11:1@58cc, 10.2@64cc, 9.8@67cc, 9.3@72cc

Part Number: SUM-SBC327040

Not Yet Reviewed

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Speed-Pro Forged Pistons L2165F40

Pistons, Forged, Flat, 4.040 in. Bore, Chevy, Set of 8

Part Number: SLP-L2165F40

5.0 out of 5 stars ( 1 )

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KB Performance Pistons KB157.040

Pistons, Hypereutectic, Dome with 2 Valve Reliefs, 4.040 in. Bore, w/Wrist Pins/Retainers, for 3.250 in. Stroke/5.700 in. Rods, Chevy, 327, Set of 8

Part Number: UEM-KB157-040

5.0 out of 5 stars ( 1 )

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Summit Racing™ Coated Hypereutectic SBF 289, 302 Pistons SUM-17303C-40

Pistons, Hypereutectic, Flat, 4.040 in. Bore, Ford, Set of 8

Part Number: SUM-17303C-40

Not Yet Reviewed

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Sealed Power Cast Pistons 310AP40

Piston, Cast Flat Top, 4.040 in. Bore, Chevy, Checker, Set of 8

Part Number: SLP-310AP40

5.0 out of 5 stars ( 1 )

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Speed-Pro Hypereutectic Pistons H660CP40

Pistons, Hypereutectic, Flat, 4.040 in. Bore, Chevy, Set of 8

Part Number: SLP-H660CP40

Not Yet Reviewed

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Mahle PowerPak Piston and Ring Kits 930203640

Pistons, PowerPak Piston and Ring Kits, 4.040 in. Bore, Forged Aluminum, Flat Top, Rings, Chevrolet, 302/327/350 Small Block, Set of 8

Part Number: MLE-930203640

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 25, 2025 if ordered today

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Estimated Ship Date: Nov 25, 2025 if ordered today

D.S.S. SX-Series Forged Pistons 8856-4040

D.S.S. SX-Series Forged Pistons 8856-4040

Piston Set, 331 Stroker SBF 289 - 302 SX Series -13cc Dish Top Inline / Twisted Wedge Piston Set. 4.040 bore

Part Number: DMS-8856-4040

Not Yet Reviewed

Estimated Ship Date: Nov 25, 2025 if ordered today

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Estimated Ship Date: Nov 25, 2025 if ordered today

Silv-O-Lite Hypereutectic Pistons 3101HC.040

Pistons, Hypereutectic, Flat, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-3101HC-040

Not Yet Reviewed

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D.S.S. E Series Forged Piston and Ring Kits K8723-4040

Piston Set, 289 / 302 / 5.0 SBF 289 - 302 E Series -13cc Dish Top Inline Piston Set. 4.040 bore

Part Number: DMS-K8723-4040

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2025 if ordered today

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Estimated Ship Date: Nov 24, 2025 if ordered today

KB Performance Pistons KB115.040

Pistons, Hypereutectic, Flat, 4.040 in. Bore, Ford, Set of 8

Part Number: UEM-KB115-040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

ICON Premium Forged Piston and Ring Kits IC791KTD.040

Piston and Ring Kit, Forged, Dome, 4.040 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-IC791KTD-040

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

D.S.S. E Series Forged Piston and Ring Kits K8720-4040

Piston Set, 289 / 302 / 5.0 SBF 289 - 302 E Series -3cc Flat Top Inline Piston Set. 4.040 bore

Part Number: DMS-K8720-4040

Not Yet Reviewed

Estimated Ship Date: Nov 25, 2025 if ordered today

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Estimated Ship Date: Nov 25, 2025 if ordered today

Speed-Pro Forged Pistons for 1962-1965 CORVETTE - L2166AF40

Pistons, Forged, Dome with Two Valve Reliefs, 4.040 in. Bore, Chevy, Small Block, Set of 8

Part Number: SLP-L2166AF40

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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KB Performance Hyper Piston and Ring Kits KB157KTM.040

Piston and Ring Kit, Hypereutectic, Dome, 4.040 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-KB157KTM-040

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

KB Performance Pistons KB116.040

Pistons, Hypereutectic, Dome, 4.040 in. Bore, Ford, Set of 8

Part Number: UEM-KB116-040

Not Yet Reviewed

Estimated Ship Date: Today

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KB Performance Hyper Piston and Ring Kits KB156KTM.040

Piston and Ring Kit, Hypereutectic, Flat, 4.040 in. Bore, Chevy, Small Block, Kit

Part Number: UEM-KB156KTM-040

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Silv-O-Lite Hypereutectic Pistons 1177HC.040

Pistons, Hypereutectic, Flat, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-1177HC-040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Mahle PowerPak Plus Piston and Ring Kits 930202640

Pistons, PowerPak Plus Piston and Ring Kits, 4.040 in. Bore, Forged Aluminum, Flat Top, Rings, Chevrolet, 302/327/350 Small Block, Set of 8

Part Number: MLE-930202640

Not Yet Reviewed

Estimated Ship Date: Nov 25, 2025 if ordered today

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Estimated Ship Date: Nov 25, 2025 if ordered today

Mahle PowerPak Piston and Ring Kits 930206640

Piston and Ring Kit, Forged, 4.040 in. Bore, Chevy, Kit

Part Number: MLE-930206640

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2025 if ordered today

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Estimated Ship Date: Nov 24, 2025 if ordered today

ICON Premium Forged Piston and Ring Kits IC719KTD.040

Piston and Ring Kit, Forged, Flat, 4.040 in. Bore, Ford, Small Block, Kit

Part Number: UEM-IC719KTD-040

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Summit Racing™ Coated Hypereutectic Pistons SUM-17302C-40-1

Piston, Hypereutectic, Flat, 4.040 in. Bore, Ford, SBF, Each

Part Number: SUM-17302C-40-1

Not Yet Reviewed

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KB Performance Pistons KB312.040

Pistons, Hypereutectic, Dome, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-KB312-040

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

KB Performance Pistons KB156.040

Pistons, Hypereutectic, Flat, 4.040 in. Bore, Chevy, Set of 8

Part Number: UEM-KB156-040

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today