Subaru OEM 12200AA390

STI EJ207 nitraded crankshaft

Product Description

The Subaru 12200AA390 is a genuine Subaru STI EJ207 crankshaft assembly with nitrided surface treatment for compatible EJ-series turbo engines. It is supplied as a genuine Subaru OEM component and is intended as a direct replacement or rebuild component where the catalogue fitment matches.

Manufactured to Subaru factory specifications, this crankshaft is designed for correct journal sizing, stroke, balance, and fitment in compatible EJ-series short-block assemblies. The nitrided surface treatment improves journal surface hardness and wear resistance compared with an untreated crankshaft surface.

Subaru officially catalogues this component as crankshaft complete.

Vehicle Compatibility – Model Years

Check fitment against your VIN and engine code before ordering. Subaru used similar EJ-series engine parts across multiple models, markets, and year ranges.

Subaru WRX and STI 1999-2005 EJ207 applications
Subaru Forester 1997-2002 turbo applications
Subaru Outback / Liberty 1998-2006 compatible EJ-series applications
Confirm crankshaft, bearing, thrust, and short-block compatibility against your VIN and engine code before ordering

Notes

Genuine Subaru OEM part number: 12200AA390

Important Fitment Note

Vehicle compatibility is a guide only. Subaru parts can vary by market, model year, engine, transmission, trim level and previous vehicle modifications. Please confirm fitment against your VIN before ordering, or contact us with your VIN and the part number if you are unsure.

12200AA390

12200AA390 Subaru STI EJ207 Nitraded Crankshaft