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, protecting your crank and engine block from wear. A thin oil layer lubricates the bearings - crank connection, letting the crank 'float' and minimizing wear. Proper support from these bearings is essential to prevent oscillations and damage to the crankshaft and other parts as the engine goes out of balance. Bearings with extra oil clearance can handle higher - horsepower motors better but may wear more during startup. These are recommended for experienced professionals. Note: Subaru main bearings are for either #5 or #3 journal bearing positions. This isn't related to VIN or year. Know your needs before buying as engine internals can't be exchanged or returned.

Using these ACL main bearings is straightforward. Just install them in the correct journal bearing position (#5 or #3) as per your Subaru model. Make sure to double - check the position before fitting. When starting up, especially if you've chosen bearings with extra oil clearance, be aware that there might be a bit more wear initially. It's crucial to let the engine warm up properly before pushing it hard. For maintenance, regularly check the oil level and quality. If you notice any strange noises or a drop in performance, it could be a sign that the bearings need inspection. Remember, these are high - performance parts, so handle them with care and only install them if you have the necessary experience.