The HPP-19155 is an aftermarket Powerglide reverse clutch pack pressure plate that is machined from 4140 bar stock; manufactured and supplied by BTE Racing. After the machining process, BTE runs the pressure plates through the Rotofinish process twice to remove burrs and sharp edges. These BTE supplied aftermarket 4140 reverse clutch pack are a proven piece and basically eliminates the cracked or shattered pressure plate sometime seen the cast alternative.