FORD / NAVISTAR 6.4L DIRECT INJECTION TURBO DIESEL 20062010 POWERSTROKE RING SE

The MAHLE S42097.030 is a premium-quality piston ring set engineered for Ford 6.4L Power Stroke diesel engines and Navistar MaxxForce 7 applications. This .030" oversize ring set is designed for engine rebuilds that require a bored cylinder, providing precise fitment for optimal compression and performance restoration.

This set features an advanced ring configuration with a plasma-moly coated top compression ring for reduced friction and enhanced durability, a chrome-faced second compression ring for superior wear resistance, and a steel-backed oil control ring for effective oil flow management. The rings have pre-lapped surfaces for quick seating and optimal sealing.

Constructed with a carbon steel upper compression ring on an SAE 9254 high alloy steel base, a ductile iron lower compression ring, and a chrome-plated cast iron oil control ring, this set meets OE-quality specifications. The ring widths are 2.5mm (top), 2.0mm (second), and 3.0mm (oil control), with a bore size of 3.896" (.030" oversize).