Subaru OEM Crank Pulley (02-05 WRX) | 12305AA243

Overview

The Genuine Subaru OEM Crank Pulley (Part #12305AA243) is the factory-original crankshaft pulley designed specifically for the 2002–2005 Subaru WRX. As a direct OEM replacement, this pulley ensures precise fitment, proper belt alignment, and reliable engine operation — exactly as engineered by Subaru. Whether you're restoring your WRX or replacing a worn unit, this genuine part delivers the factory performance your engine demands.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to exact factory specifications, ensuring perfect fitment and long-term reliability.
• Exact-Fit Guarantee — Engineered specifically for the 2002–2005 Subaru WRX EJ205 turbocharged engine, eliminating guesswork and fitment issues.
• Proper Belt Alignment — Factory geometry ensures correct serpentine and accessory belt tracking, reducing wear on belts and accessories.
• Factory Warranty Coverage — Backed by Subaru's genuine parts warranty for peace of mind.
• Direct Replacement — Bolt-on installation with no modifications required; restores OEM function instantly.
• Precision Balancing — Factory-balanced to OEM tolerances, helping reduce engine vibration and harmonic stress.

What's Included

• 1x Genuine Subaru OEM Crankshaft Pulley (Part #12305AA243)

Specifications

Fitment & Compatibility

This genuine Subaru crank pulley is confirmed for the following vehicles:

Note: Always verify your exact vehicle VIN and engine code before ordering. Cross-reference OEM part number 12305AA243 to confirm compatibility.

Installation

The Genuine Subaru Crank Pulley is a direct bolt-on replacement for the 2002–2005 WRX. Installation typically involves removing the serpentine/accessory belt(s), unbolting the existing crank pulley, and installing the new unit using the factory bolt torque specification. Use of a proper crankshaft holding tool is strongly recommended to prevent engine rotation during removal and installation. Professional installation by a qualified Subaru technician is advised if you are unfamiliar with engine front-end service procedures.