Subaru OEM EJ205 Piston | 12006AC380

Overview

The Genuine Subaru OEM EJ205 Piston (Part #12006AC380) is a factory-replacement piston engineered specifically for Subaru's turbocharged EJ205 engine. Designed for drivers and builders who demand exact-fit reliability, this OEM component meets the same precise tolerances and material specifications as the piston installed at the factory. Whether you're rebuilding a high-mileage engine or replacing a damaged piston, this is the definitive Subaru OEM solution for EJ205-powered vehicles.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to Subaru factory specifications, ensuring exact dimensional tolerances, proper compression ratios, and long-term engine reliability.
• Exact-Fit Guarantee — Designed as a direct replacement for the EJ205 engine; no modifications or machining required for a proper fitment.
• Factory-Grade Materials — Constructed from the same high-strength aluminum alloy used in original Subaru production, capable of withstanding the thermal and mechanical stresses of turbocharged operation.
• OEM Part Number Cross-Reference — Part number 12006AC380 allows for easy verification against factory service documentation and workshop manuals.
• Backed by Subaru — As a genuine OEM component, this piston is covered under Subaru's standard OEM parts warranty when installed by an authorized dealer or qualified technician.

What's Included

• 1x Genuine Subaru OEM EJ205 Piston (Part #12006AC380)

Specifications

Fitment & Compatibility

This piston is designed for Subaru vehicles equipped with the EJ205 turbocharged 2.0L engine. Common applications include:

Please verify your specific vehicle's engine code and part number against your factory service manual or parts.subaru.com before ordering. Fitment may vary by market and production date.

Installation

Piston replacement is an advanced internal engine repair requiring complete engine disassembly. Professional installation by a qualified Subaru technician or experienced engine builder is strongly recommended. Proper honing of cylinder bores, replacement of piston rings, and torque-to-spec assembly per Subaru's factory service manual are essential for correct operation. Always inspect connecting rods, bearings, and cylinder walls when replacing pistons.