These TRP camshaft retainer plates are designed to fit behind the front cover and act as a seal for the front oil passages that feed oil to the lifters, cam, and main bearings. They feature a specially designed orange O-ring seal to keep oil sealed in. This will work for gen iii 3 and gen 4 iv 4.8 5.3 6.0 6.2 LS1 LS2 LS3 LS6 LSA GM Trucks and Cars.
