

Great news – on this purchase, you'll enjoy a BuildBUX bonus of $1.45.
Regular Price: $160.42 - Instant discount: $15.42 = $145.00
Product Fitment:
2018-2021 Subaru WRX
2018-2021 Subaru STI
Restore precision shifting and drivetrain integrity with this genuine Subaru Gear Complete 3rd Drive, part number 32275AA630. This is an OEM third gear assembly built to Subaru’s factory specifications, ideal for replacing worn or damaged gears in compatible manual transmissions.
Whether your car is plagued with choppy shifts, noise in 3rd gear, or slippage under load, this fully assembled gear delivers proper tooth profiles, hardened surfaces, and reliable performance. It’s a direct replacement designed for specific Subaru STI and WRX models, ensuring seamless integration with your gearbox.
Factory OEM Quality — Manufactured to Subaru’s specifications for material, hardness, and tolerances
Complete 3rd Gear Assembly — Comes as a full unit (gear + hub, etc.), no need to salvage parts
Direct Replacement — Fits directly into the 3rd gear position in compatible transmissions
Reliable Performance Under Load — Built to handle factory torque and racing demands
Warranty‑Eligible — Covered under Subaru’s parts warranty when installed appropriately
Access the transmission internals following the factory service manual
Remove the old 3rd gear cluster carefully to avoid damaging bearings or shafts
Use new shims, spacers, or bearings as required
Torque fasteners to factory specifications
After assembly, confirm proper shift engagement, clearance, and backlash
Break in gently under low load to allow mating surfaces to seat properly
Subaru of America will only honor warranty claims for parts installed by a CERTIFIED Subaru dealership.
Additionally, the installed part must match the vehicle’s OEM VIN specification (i.e. correct part for your vehicle).
If you install a mismatched or non‑VIN‑compliant gear (for example, using an STI gear in a non-STI WRX) at an independent shop and it fails, Subaru will likely deny warranty coverage.
Use your best judgment, double-check fitment, and consider professional installation via a certified Subaru technician.
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