ACL Main Bearing High Performance 0.50mm Oversized Set, #3 Thrust Bearing Position WRX 2002-2014 / STI 2004-2021 Subaru Turbo Models | 5M8297H-.50

ACL's main bearings are crafted from a softer metal, safeguarding your crank and engine block from wear. A thin oil layer lubricates the bearings and the crank, enabling the crank to 'float' and minimize wear. Proper support from these bearings is vital to prevent oscillations and wear that can harm the crankshaft and other components as the engine goes 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 strongly advise that only experienced professionals purchase these. Note that Subaru main bearings are specific to either a #5 or #3 journal bearing position. The journal bearing position isn't related to the VIN or year. You must know this before buying. Engine internals like these bearings aren't eligible for exchange or return, so make sure you choose the right ones.

How to use: When installing these ACL main bearings, ensure you've correctly identified the #3 journal bearing position for your Subaru turbo model. Place the bearings carefully in the engine block, making sure they fit snugly. Then, install the crankshaft and follow the manufacturer's torque specifications for tightening. This will help the thin oil layer form between the bearings and the crank, allowing the crank to float. Things to note: Only experienced professionals should buy and install these bearings, especially because of the extra oil clearance which can lead to increased wear during startup. Also, make sure you know the correct journal bearing position before purchase, as engine internals are non - returnable. Maintenance advice: Regularly check the oil level and quality. A clean and sufficient oil supply is crucial for the proper functioning of the bearings. If you notice any unusual noises or vibrations from the engine, it might be a sign of bearing wear. In such cases, have a professional inspect the bearings as soon as possible.