This high-quality rebuild kit fits AP/Lockheed CP2505 and MSE GEM LD19 calipers (1 5/8" diameter pistons). Each kit includes 2 piston seals (square-section O-rings) and 2 dust seals (U-section rings with a metal backing), enough to rebuild one caliper. The EPDM seals are formulated to work with any DOT-rated brake fluid (not for use with hydraulic oil).
Note 1: This is a high-quality rebuilt kit engineered for racing by a leading racing school in the UK. It is not manufactured by AP/Lockheed. The original AP kit is no longer available, but we still offer genuine AP Racing Caliper Seals (Part No. 3580-1.625) individually.
Note 2: This kit is designed for AP/Lockheed and MSE brand seal-in-bore calipers only. They do not fit AP Racing seal-on-piston calipers or any other brand of calipers. Brakes are a critical safety component. We strongly recommend against trying to use these seals in other brands of calipers, even if the nominal piston size is the same. The results of brake system failure can have devastating effects!
Note 3: Seal-in-bore calipers are specifically designed to compress the seals to size when they are installed in the caliper bore. The seals will be slightly oversize when they are loose.
