Diesel PowerPak pistons

Choosing the Right Diesel Pistons for your Performance Build

Performance cast

Designed for street/strip or pulling trucks making 400-1000Hp that still get used as a daily driver or work truck. Machined from OE castings (retaining the steel top ring insert) giving the same driveability and longevity of an OE piston with additional strength through industry leading design technology.

  • Performance bowls with design features intended to reduce erosion issues caused by high pressure, long duration, advanced injection timing.
  • Lower compression ratio (.5 to 1.5 points) allowing more flexibility for high output tuning.
  • Fully radiused valve pockets where applicable to reduce stress and fatigue cracking.
  • MAHLE’s proprietary Grafal® skirt coating for reduced drag and increased scuff resistance.
  • Rings, pins and clips included

Performance forged

Forged diesel pistons are best suited for dedicated drag and pulling vehicles. Although the Performance Forged pistons are stronger, the lack of a steel top ring groove in the forging will result in a limited lifecycle for street applications. Strength and design flexibility still make the Performance Forged piston a favorite for competition only applications.

  • CNC machined from MAHLE’s exclusive M142S alloy chosen for its good high temperature strength and low expansion characteristics.
  • Performance bowls with design features intended to reduce erosion issues caused by high pressure, long duration, advanced injection timing.
  • Customer specified Compression Ratios
  • Fully radiused valve pockets where applicable to reduce stress and fatigue cracking
  • Hard anodized top ring groove for add durability and increased longevity
  • Grafal® coated skirts for reduced drag and increased scuff resistance

Extreme duty MONOTHERM®

Providing unmatched strength and durability, the MONOTHERM® piston will enable you to step to the next level or tow longer with confidence.

  • All forged steel construction
  • Integrated cooling gallery
  • All steel performance designed bowls eliminates all erosion issues from high pressure, long duration, advanced injection timing
  • Steel ring grooves for unmatched durability and longevity
  • Phosphate and GRAFAL® coated to reduce drag and increased scuff resistance