Subaru OEM 1st Gear Driven | 32231AA951

Overview

The Genuine Subaru OEM 1st Gear Driven (Part #32231AA951) is an exact-fit factory replacement transmission component engineered specifically for Subaru vehicles. Designed for drivers seeking a precise, reliable restoration of their manual transmission's 1st gear assembly, this OEM part ensures factory-level performance and longevity. Choosing a genuine Subaru drivetrain component means zero compromises on tolerances, material quality, or fitment.

Key Features & Benefits

• Genuine Subaru OEM Quality – Manufactured to exact factory specifications, ensuring a perfect drop-in fit with no modifications required.
• Precision-Machined Gear Teeth – Factory-engineered tooth profile delivers smooth, quiet 1st gear engagement and long-term durability under load.
• Exact Material Specification – Produced from the same high-strength alloy steel used in original Subaru transmissions, matching OEM hardness and wear resistance.
• Guaranteed Compatibility – Verified fitment for compatible Subaru models; eliminates guesswork associated with aftermarket alternatives.
• Supports Factory Warranty Standards – Using genuine OEM parts helps maintain compliance with Subaru's repair and warranty guidelines.
• Direct OEM Cross-Reference – Subaru Part Number 32231AA951 allows for straightforward verification against your vehicle's factory parts diagram.

What's Included

• 1x Genuine Subaru 1st Gear Driven (Part #32231AA951)

Specifications

Fitment & Compatibility

This genuine Subaru OEM 1st Gear Driven is a direct-replacement transmission part. Please verify fitment using your vehicle's VIN and factory parts diagram at parts.subaru.com, as manual transmission gear components are highly application-specific. This part is intended for Subaru vehicles equipped with compatible manual transmissions — commonly found across models such as the Impreza, WRX, Forester, Legacy, and Outback with applicable manual gearbox assemblies. Always confirm Part #32231AA951 against your vehicle's factory parts diagram before ordering.

Installation

Replacement of the 1st Gear Driven is an advanced internal transmission repair requiring full gearbox disassembly. This procedure is recommended for experienced transmission technicians or professional service centers only. Proper torque specifications, bearing preloads, and synchronizer alignment must be followed per Subaru's factory service manual for the specific vehicle application. This is not a bolt-on DIY installation.