Piston Rings - 4.040 in. Bore (in.) - Moly Top Ring Facing Material - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Sealed Power Performance Piston Ring Sets E-251K 40

Sealed Power Performance Piston Ring Sets E-251K 40

Piston Rings, Moly, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SLP-E-251K40

4.82 out of 5 stars ( 11 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Summit Racing™ Piston Rings SUM-133-M139-40

Piston Rings, Moly, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SUM-133-M139-40

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

D.S.S. Classic Race Piston Rings RS-MR100-4040

Piston Rings, Moly, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: DMS-RSMR100-4040

Not Yet Reviewed

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Sealed Power Plasma-Moly Piston Ring Sets E-921K 40

Piston Rings, Moly, 4.040 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: SLP-E-921K40

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Sealed Power Performance Piston Ring Sets E-286K

Piston Rings, Moly, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SLP-E-286K

Not Yet Reviewed

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

United Engine and Machine Piston Ring Sets 4000BM8.040

Piston Rings, 4.040 in. Bore, 1/16 in., 1/16 in., 3/16 in., Iron, Moly, 8-Cylinder, Set

Part Number: UEM-4000BM8-040

Not Yet Reviewed

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Sealed Power Performance Piston Ring Sets E-458K 40

Piston Rings, Moly, 4.040 in. Bore, 1.5mm, 1.5mm, 4.0mm Thickness, 8-Cylinder, Set

Part Number: SLP-E-458K40

Not Yet Reviewed

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

United Engine and Machine Piston Ring Sets 4000AM8.040

Piston Rings, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in., Iron, Moly, 8-Cylinder, Set

Part Number: UEM-4000AM8-040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Total Seal CR Classic Race Piston Rings CRH2010 40-

4.040 1.5 1.5 3.0 8CYL

Part Number: TSR-CRH201040

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Sealed Power Performance Piston Ring Sets E-229K 40

Piston Rings, Moly, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, L6, V6, Set

Part Number: SLP-E-229K40

Not Yet Reviewed

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Mahle Original Premium Piston Ring Sets 40451.040

Piston Rings, Moly, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: MAH-40451040

Not Yet Reviewed

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air

Total Seal Classic Street and Race Piston Ring Sets CRG1010 45

PISTON RINGS

Part Number: TSR-CRG1010-45

Not Yet Reviewed

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Estimated Ship Date: Monday 3/16/2026 if shipped by air