service kit: plungers KIT 156 Plunger kit Udor code 6061G5 In the kit Part numberDescriptionQty 0301665 0303485 1101H95 Fits these pumps Udor PENTA 1 PENTA-B 21/600 R Udor PENTA 600 2 PENTA-C 30/600 RPENTA-D 7.5/88 R