O-Ring Kit SQ 2.5in Piston GM D154

The O-Ring Kit SQ 2.5in Piston GM D154 from WILWOOD is a precision hydraulic seal assembly designed for brake caliper maintenance and rebuild operations. This kit is essential for mechanics and enthusiasts working on GM brake systems, particularly those servicing WILWOOD D154 brake calipers. Proper o-ring sealing is critical for maintaining brake system integrity and preventing fluid leakage.

This o-ring kit features square-cut seal geometry optimized for 2.5-inch piston calipers, delivering superior sealing performance compared to round-profile alternatives. The design ensures consistent compound durability across a range of brake fluid temperatures, maintaining piston movement precision while preventing bypass leakage. The compact dimensions of 5.25 x 1.2 x 6.6 inches make installation straightforward during caliper rebuild.

Technicians and weekend warriors rebuilding WILWOOD D154 brake calipers or performing preventative maintenance on GM performance brake systems will find this kit indispensable. It is designed to restore seal integrity and hydraulic responsiveness, making it a valuable addition to any automotive toolkit.