Genuine OEM Seal Kit for DeWalt Pressure Washers – Complete Seal Set This OEM replacement valve kit is designed for DeWalt pressure washers and includes three (3) oil seals to fully service one pump. Compatible Models: DeWalt DXPW3835 Gas Pressure Washer DeWalt DXPW4240 Professional Gas Cold Water Pressure Washer Ensure a perfect fit and restore your pressure washer’s performance with this genuine OEM kit!.