The DEWALT 5140181-33 Unloader is the newest style replacement unloader kit with the check ball and stainless steel seat for DEWALT cold water pressure washer pumps.

The 5140181 Unloader kit was used on the following partial list of DEWALT Pressure washers:

DXPW3025 DeWalt Gas Pressure Washer
DXPW3425-DeWalt Gas Portable Pressure Washer
DPW3835-CA-DeWalt-Canada-Portable Gas-Pressure Washer

DXPW4035 DeWalt Gas Portable Power Washer

DXPW4035-CA- DeWalt Canada-Portable Gas-Power Washer 

This replacement unloader was used on the DeWalt 5140198-05 Pressure Washer Pump.