ACL Main Bearing Duraglide 0.50mm Oversized Set, #3 Thrust Bearing Position WRX 2002-2014 / STI 2004-2021 Subaru Turbo Models | 5M8297A-.50

ACL's main bearings are crafted from a softer metal to safeguard your crank and engine block from wear. A thin oil layer lubricates the bearings - crank connection, enabling the crank to 'float' and minimize wear. Proper support from these main bearings is vital to prevent oscillations and wear that can harm the crankshaft and other parts as the motor gets out of balance. Bearings with extra oil clearance can handle the stress of high - horsepower motors better but may experience more wear at startup. We suggest these be bought by experienced professionals only. When buying Subaru main bearings, note that they're specific to either a #5 or #3 journal bearing position. This position isn't determined by VIN or year, so you must know it before purchase. Engine internals aren't eligible for exchange or return, so be sure about your needs.

Using these ACL main bearings is straightforward. First, make sure you've correctly identified the #5 or #3 journal bearing position your engine needs. Then, carefully install the bearings in your engine. Remember, these bearings are made for high - performance, but if you have an engine with extra oil clearance, there might be more wear during startup. So, it's best to have experienced professionals handle the installation. For maintenance, regularly check the oil level and quality. Good oil is essential to keep the thin lubricating layer between the bearings and the crank in good condition. Also, monitor your engine's performance. If you notice any unusual noises or vibrations, it could be a sign that the bearings need to be inspected. Since engine internals can't be exchanged or returned, always double - check your requirements before making a purchase.