ACL Main Bearing Duraglide 0.75mm Oversized Set, #3 Thrust Bearing Position WRX 2002-2014 / STI 2004-2021 Subaru Turbo Models | 5M8297A-.75

ACL's main bearings are crafted from a softer metal, protecting your crank and engine block from wear. A thin oil layer lubricates the connection between the bearings and the crank, letting the crank 'float' and minimizing wear. Proper support from these main bearings is essential to prevent oscillations and damage to the crankshaft and other components as the engine gets out of balance. Bearings with extra oil clearance can handle the stress of high - horsepower motors better but may experience more wear during startup. We suggest that only experienced professionals buy these. When purchasing, note that Subaru main bearings are for either #5 or #3 journal bearing positions. The journal bearing position isn't determined by VIN or year, and you need to know it before buying. Engine internal components aren't eligible for exchange or return, so be sure about your needs.

How to use: Install these main bearings carefully in the correct journal bearing position (#5 or #3) as per your Subaru model. Make sure they are properly aligned with the crank and engine block. Attention: Only experienced professionals should handle these bearings due to the complexity of installation and the potential issues with high - horsepower motors. Also, remember to figure out the correct journal bearing position before buying as returns are not possible. Maintenance advice: Regularly check the oil level and quality. The thin oil layer on the bearings is crucial for reducing wear, so ensure the oil is clean and at the right level. If you notice any signs of excessive wear or unusual engine noises, have the bearings inspected by a professional.