Designed to allow a thin layer of oil lubricates the connection between the bearings and the crank allowing the crank to "float" to reduce wear
NOTE:
Subaru main bearings are specific to either a #5 or #3 journal bearing position
Journal bearing position is not VIN or year specific, it must be known prior to purchase.
ACL Bearings are coveted by enthusiasts and professional engine builders on a worldwide scale. From high-horsepower builds, high-boosted builds, or factory builds, ACL has a bearing that will provide your engine with the reliability and protection to sustain many purposes. These particular bearings are the main journal bearings in the Race version and will come 0.20" undersized for your next rebuild.