All / Changeover Kit to 9:1 $110.00 Spool $32.00 Spool Valve Rebuild Kit $38.00 O-Ring Assortment for 4.5:1 Pump $17.00 Flush Plug 3/8 NPT Poly $1.80 Rebuild Kit for Highlifter Pump 9 to 1 ratio $135.00 Valve Body Assembly $178.00 Head Assembly, universal $135.00 Rebuild Kit for 4.5:1 Pump $135.00