Ceramic Plunger (.875 in.) is a direct replacement for 010253-1 and 100013-1
Inlet Poppet Housing is a direct replacement for 010564-1 and 301009-1. This is also included in the 015866-1
Check Valve Insert is a direct replacement for 004382-1 and 100034-1. This is also included in the 015866-1
Firing Pin (Mechanical Shift) is a direct replacement for 002226-1 and 100051-1
Check Valve Repair Kit is a direct replacement for 015866-1, 010642 and 302003-1. This is also included in the 010559-3