Mahle OE Cummins 107mm/4.210 Bore B 4.5L 6.7L OE 4931888 Piston Set (Set of 6)

Mahle OE pistons start with a 107mm (4.210 inch) bore diameter, precisely matching the original specifications for Cummins B 4.5L and 6.7L engines. When you're rebuilding the heart of your diesel, using pistons that meet or exceed original equipment manufacturer (OEM) standards is crucial for reliability and performance. These pistons are built to the same exacting tolerances Mahle is known for, ensuring a proper fit and function within the cylinder bore.

This set includes six pistons, designed specifically for the robust Cummins B-series engines. Mahle OE pistons are constructed from durable materials chosen for their strength and heat resistance, essential for handling the high combustion pressures and temperatures found in diesel applications. The design takes into account factors like piston-to-wall clearance, ring groove dimensions, and piston crown shape to optimize combustion and oil control. This attention to detail helps ensure efficient operation and longevity for your engine rebuild.

When undertaking a major engine overhaul, using a complete set of matched pistons like this Mahle OE offering simplifies the process. It guarantees that all cylinders will have identical piston characteristics, contributing to balanced engine performance and smooth running. Remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly procedures and recommended clearances.