ACL Main Bearing Duraglide Standard Size Set, #3 Thrust Bearing Position WRX 2002-2014 / STI 2004-2021 Subaru Turbo Models | 5M8297A-STD

ACL's main bearings are crafted from a softer metal to protect 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 minimize wear. Proper support from these main bearings is essential 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 they'll experience more wear during startup. These are recommended for experienced professionals only. Note that Subaru main bearings are specific to either a #5 or #3 journal bearing position. This position isn't related to VIN or year, and you must know it before buying. Engine internals aren't eligible for exchange or return, so make sure you get the right bearings.

Using these ACL main bearings is straightforward. First, make sure you know the correct journal bearing position (#5 or #3) for your Subaru. If you're an experienced professional, you can install them in your engine. Remember, these bearings with extra oil clearance can handle high - horsepower motors well, but they'll wear more during startup. As for maintenance, regularly check the oil level and quality as the thin oil layer is crucial for the bearings' performance. If you notice any unusual noises or vibrations, it might be time to inspect the bearings. Also, keep in mind that engine internals aren't returnable, so double - check your needs before purchasing.