The new K0146 is what you need when finish grinding the 6L family of pumps AND stators. This popular family of GM units includes the 6L45/6L50 and the 6L80/6L90. Our newest Superior Innovation consists of 3 sets of specifically engineered, front end play shims to bring your pump back up to specification after being re-cut on a lathe and allows for the total front end play to be adjustable.