Piston Rings

Piston Rings, Gas Nitrided Steel Top, Martensitic Ductile Napier Second, Std. Tension Oil, File Fit for 4.005 in. Bore, 1.2mm, 1.2mm, 3.0mm, Set

Part Number: SUM-136SN9045010

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

• Free Shipping

Piston Rings, Gas Nitrided, 4.000 in. Bore, 1.2mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: JEP-JG310840007

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: TSR-CR9090GP-5

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

SINGLE PISTON RING SET

Part Number: MLE-4005MS-112-1

Not Yet Reviewed

Estimated Ship Date: Today

Piston Rings, Plasma-Moly, 4.005 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: TSR-CRL9090-5

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

• Free Shipping
• Special Order

PISTON RING SINGLE SET

Part Number: CNN-RS1MGNHD4005

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Piston Rings, File Fit, 4.005 in. Bore, HV385 Thermal, 1.0mm, 1.0mm, 2.0mm, 8-Cylinder, 8 Sets

Part Number: MLE-4010MS-112

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Piston Rings, Moly, 4.005 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 6-Cylinder, Set

Part Number: SLP-E-408K40

Not Yet Reviewed

Estimated Ship Date: Today

Piston Rings, Performance, 4.005 in. Bore, HV385 Thermal, 1.0mm, 1.0mm, 2.0mm, L1, 1 Set

Part Number: MLE-4010MS-112-1

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

• Special Order

Piston Rings, 4.005 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: MLE-4010MS-15

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston Rings, DMR-Series, Plasma-Moly, 4.005 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: DMS-RSDM2004010

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

• Free Shipping
• Special Order

Ductile Moly Ring set.Features Ductile Iron 1.5 MM moly faced top ring with 1.5 MM Cast iron 2nd ring and Std Tension 4 MM oil rings. 8 Cylinder set.

Part Number: DMS-RSDM3004005

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

• Free Shipping
• Special Order

Piston Rings, Stainless Steel Top Ring, Steel Napier Second Ring, Stainless Steel Standard Tension Oil Ring, 4.005 in. 1.0mm, 1.0mm, 2.0mm, Set

Part Number: TSR-S00010

Not Yet Reviewed

Estimated Ship Date: May 4, 2026 if ordered today

• Free Shipping
• Special Order

Xtream Power Adder,Steel Ring set. Gas Nitride, Steel 1.2 MM top ring with 1.2 MM Napier 2nd ring and Std Tension 3MM oil rings. 10 Cylinder set.

Part Number: DMS-RSXP6104005

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

• Free Shipping
• Special Order

Xtream Power Adder,Steel Ring set. Gas Nitride, Steel 1.2 MM top ring with 1.2 MM Napier 2nd ring and Std Tension 3MM oil rings. 8 Cylinder set.

Part Number: DMS-RSXP6004005

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

• Free Shipping
• Special Order

DSS Racing Performance Gas Nitrided Stainless Steel Ring set.

Part Number: DMS-S0012

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

• Free Shipping
• Special Order

DSS Racing Performance Gas Nitrided Stainless Steel Ring set.

Part Number: DMS-RSXP3064005

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

• Free Shipping
• Special Order

Piston Rings, Ductile Iron, 4.005 in. Bore, 1/16 in., 1/16 in., 1/8 in. Ring Thickness, 1-Cylinder, Set

Part Number: TSR-T0390-5-1

Not Yet Reviewed

Estimated Ship Date: May 4, 2026 if ordered today

• Special Order

Piston Rings, Chromium Nitride, 4.005 in. Bore, 1.2 mm, 1.2 mm, 3.0 mm, Thickness, 8-Cylinder, Set

Part Number: TSR-CSH47085

Not Yet Reviewed

Estimated Ship Date: May 4, 2026 if ordered today

• Free Shipping
• Special Order

Piston Rings, Chromium Nitride, 4.005 in. Bore, 1.5 mm, 1.5 mm, 3.0 mm, Thickness, Single Piston, Set

Part Number: TSR-CSH20105-1

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

• Special Order