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Mahle PowerPak Pistons (EJ20)
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Mahle PowerPak Pistons (EJ20)
MAHLE Motorsport Subaru Forged PowerPak and PowerPak+ piston kits offer superior reliability and performance, letting you take performance to the next level. Subaru pistons are designed by our Motorsport division with 4032 alloy. PowerPak Plus pistons include a hard anodized top ring groove for extreme duty applications.
Advanced Features
- Slipper Skirt Style Forgings: strong, lightweight, low drag forging superior to the traditional full round design.
- Phosphate Coating: helps prevent microwelding in the ring grooves and pin galling.
- Grafal® Anti-Friction Skirt Coating: reduces drag, scuffing, friction, cylinder bore wear, and reduces piston noise..
- 4032 Aluminum Alloy: whether building a street engine or an all out race engine.
* MAHLE’s GRAFAL® skirt coating reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.
** Phosphate coating provides the grey appearance to the MAHLE piston. This dry lubricant coating (not to be confused with a thermal film coating) provides a lubricant film in the pin bores and ring grooves until the oiling system of the engine reaches operating pressure; particularly useful during the initial start-up or break-in of engines to protect against galling and microwelding. The piston crown is still machineable.
