Engine Piston Cummins 5258754 | 2881748, 4955642, 4974318, 4987914

High-Performance Engine Piston for Cummins ISF 3.8

The Cummins 5258754 engine piston is engineered to restore optimal compression, combustion efficiency, and power delivery in heavy-duty diesel engines. Designed specifically for the Cummins ISF 3.8 engine series, this standard-size (STD) piston is built to withstand extreme combustion temperatures and high pressures, ensuring long-lasting durability and reliable operation.

This part is also available under the numbers: 2881748, 4955642, 4974318, and 4987914.

Key Features and Benefits

• Precision Engineering: Manufactured to exact dimensional tolerances to ensure a perfect fit, reducing blow-by and oil consumption.
• Superior Thermal Resistance: Features a specialized cooling gallery (chłodzone denko) and robust aluminum alloy construction to handle intense heat.
• Complete Assembly: Sold as a complete set including the piston pin (wrist pin) and retaining clips for a hassle-free installation.
• Enhanced Durability: Designed with a two-stage combustion bowl (komora dwustopniowa) to optimize fuel-air mixing and combustion efficiency.

Application and Fitment

This standard-size piston is designed for Cummins ISF 3.8 diesel engines commonly found in light-to-medium duty commercial trucks, buses, and industrial machinery (including Foton, Volkswagen, and Otokar applications). It is also compatible with select 6BT and QSB engine configurations utilizing similar specifications (K=70.2 / k=54.8).

Cross-Reference / Interchange Part Numbers

This part replaces / is interchangeable with the following part numbers:

• 5258754
• 2881748
• 4955642
• 4974318
• 4987914
• 4991277
• 5292943
• 5298197
• 5405797