Description Mahle PowerPak drop-in pistons for the Audi 2.5T DAZA & DNWA engine. These pistons are made from Mahles proprietary M142P material. It is a low expansion aluminum alloy similar to 4032 but with improved strength characteristics. At elevated temperatures it offers approximately 15% improvement in tensile / yield strength. These pistons are compatible with both the factory APS cylinder walls AND aftermarket iron sleeves! 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. Hard Anodized Top Ring Grooves: extra protection against ring groove microwelding for extreme duty applications. Heavy Duty Pins: thick walled H13 tool steel pins for strength. Rod: 144mm Pins: 22mm Compression Ratio: 10:1 Bore: 82.5mm (factory size) Fitment: 2016-2021 Audi RS3 2.5T DAZA & DNWA 2017-2021 Audi TT-RS 2.5T DAZA & DNWA
