Subaru OEM R180 Inner Circlip Subaru STI 2004-2021 / WRX 2015-2021 / Legacy GT Spec B 2007-2009 | 805326000

Overview

The Genuine Subaru OEM R180 Inner Circlip (Part #805326000) is a precision-engineered retention ring designed to secure internal differential components within the R180 rear differential assembly. Built to Subaru's exact factory specifications, this circlip is an essential component for STI owners performing differential rebuilds, axle service, or drivetrain maintenance who demand OEM reliability and an exact fit.

Key Features & Benefits

• Genuine Subaru OEM Quality – Manufactured to factory specifications, ensuring precise fitment and long-term durability within the R180 differential assembly.
• Exact-Fit Guarantee – Designed specifically for the Subaru R180 rear differential; no modification or adaptation required.
• Factory Retention Design – Properly secures internal differential or axle components, preventing movement or premature wear that aftermarket alternatives may fail to address.
• Factory Warranty Coverage – As a genuine Subaru OEM part, this circlip is backed by Subaru's standard OEM parts warranty.
• Cost-Effective Repair Component – Replacing this small but critical retaining ring during a rebuild prevents costly differential damage caused by component migration.

What's Included

• 1x Genuine Subaru OEM R180 Inner Circlip (Part #805326000)

Specifications

Fitment & Compatibility

This Genuine Subaru OEM Inner Circlip is compatible with the following vehicles equipped with the R180 rear differential:

Always verify your differential type (R180 vs. R160) before ordering. The R180 is the larger rear differential used in STI, WRX 2015-2021, and Legacy GT Spec B models. Cross-reference part number 805326000 with your Subaru parts catalog or VIN to confirm fitment.

Installation

This circlip is a differential or axle rebuild component. Installation requires removal of the rear differential or axle shaft and the use of appropriate snap ring pliers sized for the R180 inner bore. Professional installation by a qualified drivetrain technician is strongly recommended to ensure proper seating and to avoid damage to surrounding components. Always inspect related seals, bearings, and thrust washers when replacing this circlip during a rebuild.