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. This protects your crank and engine block from wearing out. A thin oil layer lubricates the bearings and the crank, letting the crank 'float' and minimizing wear. Proper support from these main bearings is vital. It prevents oscillations and wear that can harm the crankshaft and other parts when the engine gets out of balance. Bearings with extra oil clearance can handle the stress of high - horsepower motors better. But they experience more wear during startup. We suggest these be bought only by experienced professionals. Remember, Subaru main bearings are for either #5 or #3 journal bearing positions. This isn't related to VIN or year. You must know the right position before buying. Engine internals can't be exchanged or returned, so make sure you pick the correct bearings.

Using these ACL main bearings is straightforward. First, make sure you've identified the correct journal bearing position (#5 or #3) for your Subaru turbo model. Once you've got the right bearings, carefully install them in your engine. During startup, be aware that bearings with extra oil clearance may experience more wear. So, it's a good idea to let the engine run smoothly for a bit before putting it under heavy load. As for maintenance, regularly check the oil level and quality. The thin layer of oil is crucial for the bearings to work properly. If the oil looks dirty or the level is low, change or top it up. Only experienced professionals should purchase and install these bearings due to their specific characteristics. And remember, since engine internals can't be returned or exchanged, double - check your purchase before you buy.