Piston Set w/Rings Ford 6.4L Diesel 8pk

The MAHLE ORIGINAL/CLEVITE Piston Set with Rings for Ford 6.4L Diesel is a forged eight-pack replacement kit engineered for PowerStroke diesel engines requiring complete piston and ring assembly replacement. This kit delivers OEM-equivalent performance and durability for heavy-duty Ford diesel applications where reliable combustion efficiency and long-service intervals are essential to engine longevity.

Each piston features a 3.890-inch bore diameter with a flat combustion chamber design optimized for the 6.4L PowerStroke's direct-injection fuel system. The ring groove configuration—3.0 x 2.0 x 3.0 mm—is precisely matched to OEM compression and oil control ring specifications, maintaining proper sealing and blowby control across the engine's operating range. Forged construction provides superior thermal strength compared to cast alternatives, critical in diesel engines that operate at sustained high pressures and temperatures. An eight-piston configuration covers a complete engine rebuild, ensuring consistent performance across all cylinders.

This piston and ring set is designed for truck owners and diesel technicians performing full-bore engine service on 6.4L PowerStroke platforms—whether restoring a high-mileage engine, addressing ring blow-by, or completing a comprehensive rebuild after extended towing or commercial service. MAHLE ORIGINAL/CLEVITE is a respected OEM and aftermarket diesel component supplier, and this kit meets or exceeds factory specifications for direct-fit compatibility without machine-shop modification.

Proper piston-to-bore clearance, ring end-gap sizing, and cylinder wall preparation are critical to installation success. Consultation with service literature or an experienced diesel technician is recommended before installation to ensure correct fitment and engine performance.