Piston Rings - 3.937 in. Bore (in.) - Gas nitrided Top Ring Facing Material - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $125 at Summit Racing

JE Pistons Pro Seal Piston Rings JG4904-3937

Piston Rings, Carbon Steel Nitride Top, Iron Phosphate Second, Low Tension Oil, File Fit for 3.937 in. Bore, Standard, 1.2mm, 1.2mm, 2.5mm, H4, Set

Part Number: JEP-JG4904-3937

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Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Piston Rings, Pro HEMI, 3.937 in. bore, File-fit 1.2mm Nitride Steel Top, 1.2mm Ductile Second, 3.0mm Std. Tension Oil, 8 Cylinders, Set

Part Number: SUM-393712

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Estimated Ship Date: Today

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Piston Rings, Gas Nitrided, 3.937 in. Bore, 1.0mm, 1.2mm, 2.8mm Thickness, Single Piston, Set

Part Number: JEP-JG1001-3937

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Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

Piston Rings, Performance Series, 100.00mm Bore, File Fit, 1.2mm, 1.5mm, 2.8mm, 6-Cylinder, Set

Part Number: MLE-10000MS-12

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Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today