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 unique design protects 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 significantly cut down on wear. Proper support from these main bearings is vital. It stops oscillations and wear that can harm the crankshaft and other parts when the motor gets out of balance. Bearings with extra oil clearance can handle the stress of high - horsepower motors better. However, they'll experience more wear during startup. We suggest these bearings be bought only by experienced professionals. When buying Subaru main bearings, note that they're specific to either #5 or #3 journal bearing positions. This position isn't determined by VIN or year, so you must know it before purchasing. Engine internals aren't eligible for exchange or return, so make sure you get the right bearings.

Using these ACL main bearings is simple. First, ensure you know whether you need the bearings for the #5 or #3 journal bearing position. This info is crucial as the wrong bearings can't be exchanged. When installing, make sure to apply a thin layer of oil to the bearings. This will help the crank 'float' and reduce wear. Remember, these bearings with extra oil clearance are great for high - horsepower motors, but they wear more during startup. So, if you're using them in a high - power setup, be a bit gentle during the initial start. For maintenance, regularly check the oil level and quality. Clean oil is key to keeping the bearings in good shape. And since these are specialized parts, it's best to have experienced professionals handle any repairs or replacements.