Valve Body Spacer Plate

Every one of our 68RFE valve body spacer plates is finished using a dedicated lapping process to ensure exceptional flatness and surface quality. This step is critical to maintaining proper hydraulic function in high-pressure transmission environments. By removing microscopic imperfections left from machining, lapping creates a perfectly smooth, flat mating surface. This allows the separator plate, channel plate, and valve body casting to seal correctly—eliminating cross-leaks between circuits and preserving line pressure where it matters most.

The 68RFE transmission operates at high line pressures. A precisely lapped spacer plate prevents fluid from leaking between circuits with different pressures, maintaining consistent hydraulic performance.

Lapping eliminates surface irregularities, which is especially important when using thicker, upgraded plates designed to handle increased pressure loads.

Tight parallelism helps prevent valve body distortion when assembled, reducing the risk of sticking valves and erratic operation.

The lapping process uses fine abrasives to produce an ultra-flat, smooth surface that promotes a reliable seal across all mating components. The result is a separator plate that supports proper pressure control, reduces common 68RFE issues, and helps extend overall transmission life.