Illustrative photo — the delivered item may differ in appearance. Orders are fulfilled by catalog part number (SKU).
Piston Ring Set Cummins 4089258 | 4025189, 4891104, 4891105, 4025012
Restore your engine’s peak compression and performance with this high-quality Cummins 4089258 piston ring set, designed to withstand extreme combustion temperatures and prevent oil consumption.
Description
High-Performance Cummins 4089258 Piston Ring Set
The Cummins 4089258 piston ring set is a premium-grade engine component designed to restore your cylinder’s peak functionality and maintain optimal compression. Engineered to withstand the extreme pressures and temperatures of heavy-duty diesel combustion, this standard-size (102mm) piston ring set provides excellent protection against cylinder wear while efficiently directing heat away from the hot piston into the cooled cylinder wall.
This part is also available under the numbers: 4025189, 4891104, 4891105, 4025012.
Key Features & Benefits
- Superior Wear Protection: Meticulously crafted to protect cylinders and other critical engine parts from premature wear.
- Efficient Heat Dissipation: Directs heat away from the piston crown to the cooled cylinder block, preventing thermal fatigue.
- Reduced Oil Consumption: Provides an exceptional seal to minimize blow-by gas and prevent oil from entering the combustion chamber.
- Guaranteed Fitment: Rigorously tested to meet or exceed factory standards for form, fit, and function.
Engine Compatibility & Specifications
This piston ring set is designed for standard 102mm bore cylinders (dimensions: 3T x 2.38 x 4) and is compatible with the following Cummins engine models:
- Cummins ISB 3.9 / ISB 5.9 / ISB 4.5 / ISB 6.7
- Cummins QSB 3.9 / QSB 5.9
- Cummins ISF 3.8
- Cummins QSF 3.8
Cross-Reference / Interchange Part Numbers
This part replaces / is interchangeable with the following part numbers:
- 4089258
- 4025189
- 4891104
- 4891105
- 4891106
- 4025012
- 4089137
- 3947871
- 3959079
- 3947678
- 4089138
