Illustrative photo — the delivered item may differ in appearance. Orders are fulfilled by catalog part number (SKU).
Piston Ring Set Cummins 3802421 | 3802746, 4089258, 3802230, 3802050, 3802056, A77727, J802746, A77500
Restore optimal engine compression and prevent oil consumption with this premium piston ring set for Cummins 4BT 3.9 and 6BT 5.9 engines. Engineered to standard 102mm bore specifications, it ensures a reliable seal and long-lasting durability.
Description
High-Performance Piston Ring Set for Cummins 4BT & 6BT Engines
Ensure your engine operates at peak efficiency with this premium-grade piston ring set, designed specifically for Cummins 4BT 3.9L and 6BT 5.9L diesel engines. Engineered to meet or exceed standard specifications, this set provides an exceptional seal within the cylinder bore, preventing combustion gases from escaping and minimizing oil consumption.
Key Features & Benefits
- Optimal Compression: Restores cylinder pressure to factory standards, improving overall engine power and fuel efficiency.
- Superior Oil Control: The precision-engineered oil ring prevents oil blow-by, reducing exhaust smoke and keeping your engine running clean.
- Durable Construction: Manufactured from high-strength materials to withstand the extreme heat and pressure of heavy-duty diesel operations.
- Standard Fitment: Designed for standard (STD) 102mm bore cylinders, ensuring a perfect drop-in replacement.
Technical Specifications
- Bore Diameter: 102.00 mm (Standard Size / STD)
- Ring Thicknesses: 3.00 mm (Top Ring) x 2.35 mm / 2.38 mm (Second Ring) x 4.00 mm (Oil Ring)
- Compatible Engines: Cummins 4BT 3.9, 6BT 5.9, 4ISBe, 6ISBe
Cross-Reference Numbers
This piston ring set is interchangeable with the following part numbers: 3802746, 4089258, 3802230, 3802050, 3802056, A77727, J802746, A77500, 851010430, 12710200-00, 12710200, 79-0803-00, 79080300, 0815520000, 7377204, 90803-00, 9080300, GRS7054, S7054, 0814500000.
