Subaru OEM EJ257 Nitride Treated Crankshaft Subaru STI 2004-2021 / WRX 2006-2014 | 12200AA430

Part #: 12200AA430. This brand - new nitride treated crankshaft comes straight from Subaru and is taken from the 2010 Subaru WRX STi EJ257. Nitride treatment makes the crank's surface harder. This helps prevent scoring that can happen when a piece of metal gets stuck between the bearing and the crank. When the crankshaft surface is harder, any material that gets caught between the surfaces is ground down and filtered out through the oil, which can stop bearing failure. Remember, the actual product might look different from the picture. Subaru of America only warrants parts installed on a car with a matching VIN by a CERTIFIED Subaru Dealership. For example, if you install an STi block in a WRX at a non - certified shop, don't expect a warranty claim if it fails.

Using this Subaru nitride treated crankshaft is straightforward. Just have it installed by a certified Subaru dealership to ensure it's done right and to keep your warranty valid. When it comes to maintenance, make sure to regularly check your oil levels and change the oil as recommended by Subaru. This will help keep the crankshaft well - lubricated and prevent any debris from causing damage. Also, be aware that Subaru only provides a warranty for parts installed on a vehicle with a matching VIN at a certified dealership. So, if you're thinking of a DIY installation or getting it done at a non - certified place, you won't be covered by the warranty. Always use your best judgment when making these decisions.