Backup Seal Sleeve is a direct replacement for B-1002-2 and 100018-1
Retaining Screw is a direct replacement for 004380-1 and 100056-1. 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
Inlet Poppet is a direct replacement for 015384-1, 010011-1 and 100058-1. This is also included in the 015866-1
Guide Bushing (End Bell) is a direct replacement for B-1040-2