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

Summit Racing™ Pro LS Piston Rings SUM-136SN9045045

Piston Rings, Gas Nitrided Steel Top, Martensitic Ductile Napier Second, Std. Tension Oil, File Fit for 4.040 in. Bore, 1.2mm, 1.2mm, 3.0mm, Set

Part Number: SUM-136SN9045045

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Summit Racing™ Pro GPX Gas Ported Piston Rings SUM-GP404016

Piston Rings, Pro GPX Gas Ported, 4.040 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP404016

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Mahle Performance Piston Rings 4045MS-112

Mahle Performance Piston Rings 4045MS-112

Piston Rings, 4.040 in. Bore, Cast Iron, 1.0mm., 1.0mm, 2.0mm Thickness, 8-Cylinder, Set

Part Number: MLE-4045MS-112

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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 )

Estimated Ship Date: Tomorrow

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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 )

Estimated Ship Date: Tomorrow

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Summit Racing™ Pro GPX Gas Ported Piston Rings SUM-GP404015

Piston Rings, Pro GPX Gas Ported, 4.040 in. Bore, File Fit, Gas Nitrided, 1.5mm, 1.5mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP404015

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Summit Racing™ Pro GPX Gas Ported Piston Rings SUM-GP404064

Piston Rings, Pro GPX Gas Ported, 4.040 in. Bore, File Fit, Plasma-moly, 5/64 in., 5/64 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP404064

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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 )

Estimated Ship Date: Tomorrow

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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 )

Estimated Ship Date: Tomorrow

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JE Pistons Pro Seal Premium Sportsman Series Piston Rings S100S8-4040-5

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

Part Number: JEP-S100S8-40405

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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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

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Hastings Stainless Steel Series Performance Ring Sets SN9045040

Piston Rings, Stainless Steel Series Performance, Gas Nitrided, 4.040 in. Bore, 1.2mm, 1.2mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-SN9045040

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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

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Sealed Power Performance Piston Ring Sets R990240

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

Part Number: SLP-R990240

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Sealed Power Plasma-Moly Piston Ring Sets R934345

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

Part Number: SLP-R-9343-45

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Hastings Steel Series Performance Ring Sets SM8565040

Piston Rings, Steel Series Performance, Plasma-moly, 4.040 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-SM8565040

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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

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United Engine and Machine Piston Ring Sets 4000BD8.045

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

Part Number: UEM-4000BD8-045

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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 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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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: Tomorrow

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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

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JE Pistons Premium Race Series Piston Rings J100F8-4040-5

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

Part Number: JEP-J100F840405

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

Summit Racing™ Pro GPX Gas Ported Piston Rings SUM-GP404012

Piston Rings, Pro GPX Gas Ported, 4.040 in. Bore, File Fit, Gas Nitrided, 1.2mm, 1.2mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP404012

Not Yet Reviewed

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