Piston Rings - 4.040 in. Bore (in.) - Cast iron Second Ring Material - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $125 at Summit Racing

Mahle Performance Piston Rings 4045MS-15

Piston Rings, Performance Series, 4.040 in. Bore, File Fit, 1.5mm, 1.5mm, 3.0mm, 8-Cylinder, Set

Part Number: MLE-4045MS-15

5.0 out of 5 stars ( 1 )

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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 )

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Mahle Original Premium Piston Ring Sets 40564CP.040

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

Part Number: MAH-40564CP040

5.0 out of 5 stars ( 1 )

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Mahle Performance Piston Rings 4045MS

Piston Rings, Performance Series, 4.040 in. Bore, File Fit, 1/16 in., 1/16 in., 3/16 in., 8-Cylinder, Set

Part Number: MLE-4045MS

5.0 out of 5 stars ( 1 )

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Summit Racing™ Piston Rings SUM-133-139-40

Summit Racing™ Piston Rings SUM-133-139-40

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

Part Number: SUM-133-139-40

4.75 out of 5 stars ( 8 )

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Total Seal CR Classic Race Piston Rings CR3690 40

Piston Rings, Plasma-moly, 4.040 in. Bore, 1/16 in., 1/16 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: TSR-CR369040

5.0 out of 5 stars ( 1 )

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Summit Racing™ Piston Rings SUM-134-CM553240

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

Part Number: SUM-134-CM553240

3.75 out of 5 stars ( 4 )

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Sealed Power Cast Piston Rings E-251X 40

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

Part Number: SLP-E-251X40

5.0 out of 5 stars ( 2 )

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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

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Mahle Performance Piston Rings 4045ML-043

Piston Rings, Performance Series, 4.040 in. Bore, File Fit, 0.043 in., 0.043 in., 3.0mm, 8-Cylinder, Set

Part Number: MLE-4045ML-043

Not Yet Reviewed

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Total Seal CRL Classic Race Piston Rings CRL3690 45

Piston Rings, Plasma-moly, 4.040 in. Bore, 1/16 in., 1/16 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: TSR-CRL3690-45

2.0 out of 5 stars ( 1 )

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Total Seal CR Classic Race Piston Rings CR9090 40

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

Part Number: TSR-CR9090-40

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Total Seal CRL Classic Race Piston Rings CRL9090 45-

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

Part Number: TSR-CRL9090-45

Not Yet Reviewed

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Summit Racing™ Piston Rings SUM-134-CM553140

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

Part Number: SUM-134-CM553140

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Mahle Original Standard Piston Ring Sets 50564CP.040

Piston Rings, Original Standard Piston Ring Sets, Cast Iron, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, V8, Set

Part Number: MAH-50564CP040

Not Yet Reviewed

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Mahle Performance Piston Rings 4040MS

Piston Rings, Performance Series, 4.040 in. Bore, 1/16 in., 1/16 in., 3/16 in., 8-Cylinder, Set

Part Number: MLE-4040MS

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Wiseco Pro Tru Hastings Piston Ring Sets 4040H

Piston Rings, Plasma-moly, 4.040 in. Bore, 1/16 in., 1/16 in., 3/16 in. Thickness, Single Piston, Set

Part Number: WIS-4040H

5.0 out of 5 stars ( 1 )

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JE Pistons Pro Seal Premium Sportsman Series Piston Rings S100S1-4040-5

Piston Rings, Plasma-Moly, 4.040 in. Bore, 1/16 in., 1/16 in., 3/16 in. Thickness, 1-Cylinder, Set

Part Number: JEP-S100S1-40405

Not Yet Reviewed

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Mahle Performance Piston Rings 4045MS-15-1

Piston Rings, Performance Series, 4.040 in. Bore, File Fit, 1.5mm, 1.5mm, 3.0mm, Single Piston, Set

Part Number: MLE-4045MS-15-1

5.0 out of 5 stars ( 4 )

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Manley Performance Piston Rings 46214-8

Piston Rings, Plasma-moly, 4.040 in. Bore, File Fit, 0.043 in., 0.043 in., 3.0mm Thickness, 8-Cylinder, Set

Part Number: MAN-46214-8

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

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Estimated Ship Date: May 15, 2026 if ordered today

Total Seal CR Classic Race Piston Rings CR0390 40

Piston Rings, Plasma-moly, 4.040 in. Bore, 1/16 in., 1/16 in., 1/8 in. Thickness, 8-Cylinder, Set

Part Number: TSR-CR0390-40

Not Yet Reviewed

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Total Seal CR Classic Race Piston Rings CRH2010 40-

4.040 1.5 1.5 3.0 8CYL

Part Number: TSR-CRH201040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 16, 2026 if ordered today

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Estimated Ship Date: Apr 16, 2026 if ordered today

Howards Cams True Seal Plasma-Moly Ring Sets HRC4870-4040-5

Piston Rings, Plasma-Moly, 4.040 in. Bore, 1/16 in., 1/16 in., 1/8 in. Thickness, 8-Cylinder, Set

Part Number: HRS-HRC487040405

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

Howards Cams True Seal Plasma-Moly Ring Sets HRC4862-4040-5

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

Part Number: HRS-HRC486240405

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

Manley Performance Piston Rings 46354-8

Piston Rings, Plasma-moly, 4.040 in. Bore, File Fit, 1/16 in., 1/16 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: MAN-46354-8

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today