Kit Includes: PN 9166 Valve Stem Assy (A-dec® #38.0211.00), PN 6098 Relay Stem Assy (A-dec® #22.0778.00), PN 9121 Extension Spring (A-dec® #38.0208.00), PN 9124 Compression Spring (A-dec® #013.019.00) (pkg of 10), PN 9012 Diaphragm (A-dec® #38.0054.02) (pkg of 10), PN 9171 Brass Washer (A-dec® #004.057.00) (pkg of 10), PN 9029 Foot Control Spring (A-dec #10.0440.00)