Home / Repair Kits / Wilkins / 4 IN / 350ASTRFilter your Results Repair Kit TypeAll #1 Check #2 CheckFind PartsClear FiltersSKU: WL 351NWILKINS 351-N "O" RING ONLY #1 OR #2 CHECK MODULE BODY FOR 2 1/2"-4" 350ST-375ST - CHECK VALVES 4" 375- 475 RP ASSEMBLIES$18.72Add to CartSign In for Contractor Price