Mahle 197769285 PowerPak Plus Forged Piston Set for Subaru FA20 Turbo 86mm

Vehicle Fitment

• 2015-2021 Subaru WRX (FA20 Turbo)

Fitment Notes

• 86.0mm bore, 86.0mm stroke, 129.3mm rod length - confirm your block and rod specifications match exactly before ordering
• -8cc dish, yielding a 10.5:1 compression ratio with 40cc cylinder heads
• Set of 4 pistons with rings included
• A 86.5mm bore version is also available separately (PN 197769205) for overbored applications

Features

• Mahle PowerPak Plus design is a completely finished, drop-in piston assembly - everything is done except filling the included performance ring set
• Forged from 2618 low-expansion aluminum alloy for high strength and reduced piston-to-wall clearance
• Anti-friction skirt coating reduces drag for smoother, more efficient operation
• Forced pin oiler design increases wrist pin lubrication for improved durability under sustained boost
• CNC precision-machined pin bores for consistent, accurate fitment
• Includes a 22mm high-quality steel wrist pin (123g)
• Performance 1.2/1.2/2.8mm ring set with a steel nitrided top ring for excellent wear resistance and sealing
• Race-proven round wire locks included for secure, reliable pin retention
• Backed by Mahle's 80+ years of piston manufacturing experience, from OEM to Formula 1

Specifications

• Type: Forged Dish Piston Set (PowerPak Plus)
• Bore: 86.0mm
• Stroke: 86.0mm
• Rod Length: 129.3mm
• Dish: -8cc
• Compression Ratio: 10.5:1 (with 40cc heads)
• Advertised Weight: 320 grams
• Material: 2618 Forged Aluminum Alloy
• Quantity: Set of 4

Included Components

• 4x Forged Pistons
• 4x 22mm Steel Wrist Pins
• Performance Ring Set (1.2/1.2/2.8mm)
• Round Wire Locks

Product Description

The Mahle 197769285 PowerPak Plus piston set gives FA20 Turbo builders a genuinely complete, engine-ready piston assembly rather than a bare forging that needs additional sourcing. Forged from 2618 low-expansion aluminum alloy and finished with an anti-friction skirt coating, these pistons are built to hold tight tolerances and reduce drag under the sustained heat and pressure of a turbocharged 2.0L application.

A forced pin oiler design and CNC-machined pin bores support reliable wrist pin lubrication, while the included 22mm steel wrist pin, nitrided top ring, and race-proven wire locks round out a kit that's ready to install as soon as the rings are gapped. With an -8cc dish yielding a 10.5:1 compression ratio on 40cc heads, this set is a strong foundation for FA20 Turbo owners building toward higher boost and power levels while maintaining long-term engine reliability.