The Speedmaster PCE470.1002 is a hardened steel valve spring seat designed for LS1 engines, featuring precise dimensions of 1.263" outer diameter, 0.510" inner diameter, and 0.041" thickness. The hardened steel construction delivers the durability and strength needed to withstand the repeated stress and heat cycles of high-performance valve train operation.
Engineered to provide a stable, consistent seating surface for valve springs, this seat helps maintain proper spring pressure and alignment to support reliable engine performance. Whether you are rebuilding a stock LS1 or upgrading to a performance valvetrain, the PCE470.1002 is a precise, dependable component built to Speedmaster's quality standards.