Pistons & Piston Rings

Piston Rings, DMR-Series, Plasma-Moly, 4.030 in. Bore, 1/16 in., 1/16 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: DMS-RSDM4004030

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Pistons, Cast, Dish, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, L6, Set of 6

Part Number: UEM-3136-STD

5.0 out of 5 stars ( 1 )

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Piston, Cast Flat Top, 4.040 in. Bore, Chevy, Checker, Set of 8

Part Number: SLP-310AP40

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Piston Rings, Performance Series, 4.030 in. Bore, File Fit, 1/16 in., 1/16 in., 3/16 in., 8-Cylinder, Set

Part Number: MLE-4035ML

5.0 out of 5 stars ( 2 )

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Piston Rings, Stainless Steel Series Performance, Gas Nitrided, 4.125 in. Bore, 1.2mm, 1.2mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-SN9050

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Piston Rings, Pro GPX Gas Ported, 4.290 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP429016

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Piston Rings, Plasma-moly, 4.030 in. Bore, 1/16 in., 1/16 in., 3.0mm Thickness, 8-Cylinder, Set

Part Number: TSR-CR1001-35

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Piston Rings, Pro GPX Gas Ported, 4.390 in. Bore, File Fit, Gas Nitrided, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set

Part Number: SUM-GP439016

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Pistons, Cast, Flat, 4.180 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Pontiac, V8, Set of 8

Part Number: UEM-1526-060

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Estimated Ship Date: Apr 27, 2026 if ordered today

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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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Piston Rings, Plasma Moly Steel Top, Ductile Napier Second, Standard Tension Oil, File fit for 4.600 in. Bore, 1.5mm, 1.5mm, 3.0mm, Set

Part Number: SUM-85454600

5.0 out of 5 stars ( 1 )

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Piston Rings, Premium Ductile Ring Sets, 0.040 in. Oversize, 4.165 in. Bore, Plasma-moly, 1/16 in., 1/16 in., 3/16 in. Thickness, V8, Set of 8

Part Number: HSN-2M5529040

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Piston Rings, Pro HEMI, 4.090 in. bore, File-fit 1.2mm Nitride Steel Top, 1.2mm Ductile Second, 3.0mm Std. Tension Oil, 8 Cylinders, Set

Part Number: SUM-409012

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Piston Rings, Plasma-moly, 4.250 in. Bore, 1/16 in., 1/16 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SLP-R9904

5.0 out of 5 stars ( 1 )

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Piston, 23 Degree, Forged, Dome, 2-Valve Reliefs, 4.125 in. Bore, 3.500 in. Stroke, 6.000 in. Rod, 1.250 in. Compression, Chevy, Right, Each

Part Number: JEP-182067R

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Estimated Ship Date: Apr 6, 2026 if ordered today

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Piston Rings, Premium Piston Ring Sets, Plasma-moly, 4.055 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, V8, Set

Part Number: MAH-42089CP

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Piston Rings, Plasma-moly, 4.390 in. Bore, 1/16 in., 1/16 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: TSR-CR2690-30

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Piston Rings, Plasma-moly, 4.030 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SLP-R9903030

5.0 out of 5 stars ( 4 )

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Piston Rings, 4.030 in. Bore, 1/16 in., 1/16 in., 3/16 in., Iron, Moly, 8-Cylinder, Set

Part Number: UEM-4000BM8-030

4.0 out of 5 stars ( 2 )

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Piston Rings, Premium Piston Ring Sets, Plasma-moly, 4.233 in. Bore, 2.87mm, 2.5mm, 3.45mm Thickness, L6, Set

Part Number: MAH-42140020

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Pistons, Hypereutectic, Dish, 3.875 in. Bore, Jeep, 4.0L, Set of 6

Part Number: UEM-3241HC-STD

2.0 out of 5 stars ( 1 )

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Piston Rings, Performance, File Fit, 4.500 in. Bore, +0.005 in. Rings, Plasma-moly, 1.5mm, 1.5mm, 3.0mm, V8, 8 Sets

Part Number: MLE-4505MS-15

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

Part Number: TSR-CRH2010-5

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Piston Rings, Plasma-moly, 4.270 in. Bore, 1/16 in., 1/16 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: TSR-CR9190-25

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Piston Rings, Moly, 4.195 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SLP-E-302K30

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