ACL Main Bearing High Performance Standard Size Set, #3 Thrust Bearing Position WRX 2002-2014 / STI 2004-2021 Subaru Turbo Models | 5M8297H-STD

ACL's main bearings are crafted from a softer metal. This protects your crank and engine block from wear. A thin oil layer lubricates the bearings and the crank, letting the crank 'float' and minimizing wear. Proper support from main bearings is vital to avoid 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 higher - horsepower motors better but will wear more during startup. These are recommended for experienced professionals only. Remember, Subaru main bearings are for either #5 or #3 journal bearing positions. This isn't related to VIN or year, so you need to know it before buying. Engine internals aren't eligible for exchange or return, so double - check what you need.

Using these ACL main bearings is straightforward. First, make sure you know the correct journal bearing position (#5 or #3) for your Subaru engine. Once you've installed the bearings, the thin layer of oil will start lubricating the connection between the bearings and the crank, allowing the crank to 'float' and reducing wear. For high - horsepower motors, the bearings with extra oil clearance are a good choice, but be aware that they will wear more during startup. When it comes to maintenance, regularly check the oil level and quality. Since the bearings are made of a softer metal, proper lubrication is key to their long - term performance. Also, keep an eye on the engine's balance to prevent excessive wear on the crankshaft and other components. And remember, these engine internals are not eligible for exchange or return, so be certain of your purchase before you buy.