Each Pump uses 3 each. Fits pumps :Karcher KT6035L ,Legacy GT6035L , Karcher KT6035R.1 , Legacy GT6035R.1 , GT4035L.1 , KT4035L.1 , KT4035L.1 , GT4035L.1 , Karcher KT4035R.1 , Legacy GT4035R.1, KT4040R.1KIT CONTAINS ONE 20MM PLUNGER, NUT AND COPPER SEALS TO SERVICE KARCHER, HOTSY, LANDA & LEGACY PRESSURE WASHER PUMPSEACH PUMP REQUIRES 3 KITSLegacy