Piston Rings

Piston Rings, Gas Nitrided Steel Top, Martensitic Ductile Napier Second, Std. Tension Oil, File Fit for 4.000 in. Bore, 1.2mm, 1.2mm, 3.0mm, Set

Part Number: SUM-136SN9045005

4.29 out of 5 stars ( 7 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Piston Rings, Moly, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SLP-E-251K

4.2 out of 5 stars ( 45 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Plasma-moly, 4.000 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-2M4860

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Plasma-moly, 4.000 in. Bore, 1.2mm, 1.5mm, 2.5mm Thickness, 8-Cylinder, Set

Part Number: HSN-2M5170

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Plasma-moly, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: HSN-2M139

3.55 out of 5 stars ( 11 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Premium Ductile Ring Sets, Standard Size, 4.000 in. Bore, Plasma-moly, 1.5mm, 1.5mm, 4.0mm Ring Thickness, L8, V8, Set of 8

Part Number: HSN-2M4726

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, 4.000 in. Bore, 1.2mm, 1.5mm, 2.5mm Thickness, 8-Cylinder, Set

Part Number: SLP-E-979K

4.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Piston Rings, Premium Ductile Ring Sets, Plasma-moly, 4.000 in. Bore, 2.0mm, 1.5mm, 4.0mm Thickness, L8, V8, Set of 8

Part Number: HSN-2M4626

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Pro GPX Gas Ported, 4.000 in. Bore, File Fit, Gas Nitrided, 1.2mm, 1.2mm, 3.0mm Thickness, V8, Set

Part Number: SUM-GP400012

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Piston Rings, Premium Ductile Ring Sets, Standard Size, 4.000 in. Bore, Plasma-moly, 1.5mm, 1.5mm, 3.0mm Ring Thickness, H6, L6, V6, Set of 6

Part Number: HSN-2M4862

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Pro GPX Gas Ported, 4.000 in. Bore, File Fit, Plasma-moly, 5/64 in., 5/64 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP400064

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Engine Piston Ring Set, 8-Cyl Ring Set; Plasma Moly

Part Number: HSN-2M5615

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Premium Ductile Ring Sets, Plasma-moly, 4.000 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, for Single Piston, Set

Part Number: HSN-2M4860S

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Premium Ductile Ring Sets, Plasma-moly, 4.000 in. Bore, 1.2mm, 1.5mm, 2.5mm Thickness, Each

Part Number: HSN-2M5170S

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Premium Ductile Ring Sets, Plasma-moly, 4.000 in. Bore, 1.5mm, 1.5mm, 4.0mm Thickness, L8, V8, Set of 8

Part Number: HSN-2M4346

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Pro GPX Gas Ported, 4.000 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP400016

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Piston Rings, Premium Ductile Ring Sets, Plasma-moly, 4.000 in. Bore, 1.2mm, 1.2mm, 2.5mm Thickness, L2, V2, Set

Part Number: HSN-2M5299

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, File Fit, 4.000 in. Bore, HV385 Thermal, 1.0mm, 1.0mm, 2.0mm, 8-Cylinder, 8 Sets

Part Number: MLE-4005MS-112

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Piston Rings, Premium Ductile Ring Sets, Plasma-moly, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, for Single Piston, Set

Part Number: HSN-2M139S

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Engine Piston Ring Set, 6-Cyl Ring Set; Plasma Moly

Part Number: HSN-2M592

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Piston Rings, Gas Nitrided, 4.000 in. Bore, 0.047 in., 0.047 in., 3.0mm Thickness, Single Piston, Set

Part Number: WIS-4000GFX

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Pro GPX Gas Ported, 4.000 in. Bore, File Fit, Gas Nitrided, 1.0mm, 1.0mm, 2.0mm Thickness, V8, Set

Part Number: SUM-GP400010

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Engine Piston Ring Set, 8-Cyl Ring Set; Plasma Moly

Part Number: HSN-2M577

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Engine Piston Ring Set, 6-Cyl Ring Set; Plasma Moly

Part Number: HSN-2M4879

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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