Illustrative photo — the delivered item may differ in appearance. Orders are fulfilled by catalog part number (SKU).
Piston Ring Set Cummins 3802863 | 3938197, 505076, J802758
Ensure optimal engine compression and oil control with this premium +0.50mm (.020″) oversize piston ring set for Cummins B-Series, ISB, and QSB engines. Engineered to meet strict heavy-duty standards for reliable performance and long-lasting durability.
Description
High-Performance +0.50mm Oversize Piston Ring Set for Cummins Engines
Restore your engine’s compression, efficiency, and oil control with this premium +0.50mm (.020″) oversize piston ring set. Specifically engineered for Cummins B-Series, ISB, and QSB heavy-duty diesel engines, this set is designed to withstand extreme combustion temperatures and high-pressure environments, ensuring a reliable seal and preventing blow-by.
Key Features & Benefits
- Oversize Precision: +0.50mm (.020″) oversize configuration, perfect for rebuilt cylinders requiring boring.
- Superior Sealing: Engineered to maintain optimal cylinder compression and minimize oil consumption.
- Heavy-Duty Durability: Manufactured from high-grade materials to resist wear, heat, and tension loss under demanding operating conditions.
- Exact Fitment: Built to precise dimensional specifications for a seamless installation and dependable performance.
Engine Compatibility
This piston ring set is compatible with a wide range of Cummins, Komatsu, and Case IH engines, including:
- Cummins: 4B 3.9, 4BT 3.9, 4BTA 3.9, 6B 5.9, 6BT 5.9, 6BTA 5.9, ISB 3.9, ISB 4.5, ISB 5.9, QSB 3.9, QSB 4.5, QSB 5.9
- Komatsu: S4D102, S6D102
- Case IH / Consolidated Diesel: 4-390, 4T-390, 4TA-390, 6-590, 6T-590, 6TA-590
Technical Specifications
- Part Number: 3802863
- Bore Diameter: 102 mm (+0.50 mm oversize)
- Ring Configuration: 2.9T mm (Top) x 2.9T mm (Second) x 4.00 mm (Oil Ring)
- Set Coverage: 1 Cylinder Set
