ACL Main Bearing High Performance 0.50mm Oversized Set, #3 Thrust Bearing Position WRX 2002-2014 / STI 2004-2021 Subaru Turbo Models | 5M8297H-.50

ACL's main bearings are crafted from a softer metal, which safeguards your crank and engine block from wear. A thin oil layer lubricates the connection between the bearings and the crank, enabling the crank to 'float' and minimizing wear. Proper support from main bearings is essential to prevent oscillations and wear that can harm the crankshaft and other components as the engine becomes more unbalanced. Bearings with extra oil clearance can better handle the stress of high - horsepower motors, but they experience more wear during startup. These are recommended for experienced professionals only. When buying, note that Subaru main bearings are specific to either a #5 or #3 journal bearing position. The journal bearing position isn't related to the VIN or year, and you must know it before purchase. Engine internal components aren't eligible for exchange or return, so be sure about which bearings you need.

Using these ACL main bearings is straightforward. First, make sure you've correctly identified the #3 thrust bearing position for your Subaru Turbo model. Install the bearings carefully in the right place. When starting the engine, be aware that these bearings with extra oil clearance may wear a bit more during startup, so give it a smooth start. As for maintenance, regularly check the oil level and quality because the thin layer of oil is crucial for the bearings to work well. Also, keep an eye on the engine's balance to prevent excessive wear on the bearings and other components. Remember, these are for experienced pros, so if you're not confident, it's best to get help from someone who knows engines well. And always double - check the bearing position before buying as you can't exchange or return engine internal components.