Mahle PowerPak Piston Set For VW & Audi 2.5L/2.5T 07K Engines

Product Overview
Requires aftermarket connecting rods with a non-tapered 22mm small end

Mahle has developed a robust and reliable piston for 2.5L 5-cylinder engines, ideal for high-boost applications. These pistons are engineered to withstand intense thermal loads, rapid engine speeds, and the ignition pressure stress specific to direct fuel injection and turbocharged setups. Crafted from a high-temperature aluminum-silicon alloy, they deliver exceptional performance for both race and street applications.

Key Features:

• Piston Bore Size: 82.5mm
• Compression Ratio: 9.3:1
• Wrist Pin Size: 22mm, compatible with IE rods
• Material: Forged high-strength aluminum alloy
• Design: Lightweight construction with quiet operation
• Proprietary Alloy: Mahle 124P for enhanced durability
• Ring Land Treatment: Hard anodized for added wear resistance
• Oil Squirter Clearance: Built-in design compatibility
• Coatings: Includes Grafal piston coatings for improved performance
• Package Includes: Pistons, wrist pins, piston rings, and pin clips

GRAFAL Piston Coating

Mahle pistons are treated with GRAFAL, a proprietary coating that minimizes friction between the piston skirt and cylinder wall, enhancing scuff resistance. This advanced coating allows for tighter fitting clearances, resulting in quieter engine operation without compromising performance.

Long-Life Piston Alloy

These pistons are constructed from Mahle’s unique 142P alloy, which blends the low expansion characteristics of 4032 with strength comparable to 2618 alloys. This combination allows for tight piston-to-wall clearances, enabling smoother and quieter operation similar to OEM specifications.

Mahle Performance Piston Rings

Each set includes high-performance piston rings with the following features:

• Top Ring: Barrel-faced and crafted from ductile iron
• Oil Ring: 3-piece design for optimal performance
• Reduced Friction: Minimal drag for improved power output
• Blow-By Reduction: Tight clearances and hard anodized top ring lands prevent micro welding and enhance sealing
• Accumulator Groove: Positioned beneath the top and second rings, this groove minimizes ring flutter and secures top ring seal against the cylinder bore.

Aftermarket Connecting Rod Requirement

This piston set includes 22mm German steel wrist pins and wire locks, optimized for durability and strength. For proper installation, aftermarket connecting rods with a non-tapered 22mm small end are required. Ghost Autosport 2.5 H-beam rods are highly recommended for a precise fit and unmatched performance in your 2.5L 5-cylinder bottom-end build.