This is a genuine OEM replacement part, this item is sold individually.
The purpose of the 678169004 Thermal Relief Valve is one of safety.
In the event that the water in the pump continues to circulate without being discharged, the Thermal Relief Valve will open and release the water and pressure from the the pump so it will not be damaged.

This is a Genuine OEM sourced replacement part used on Pressure Washers. This high pressure hose is made out of Rubber and Plastic. It is 25 ft long and it is Sold Individually. This hose can be used on pumps that produce up to 3000 PSI.

This is a genuine OEM replacement kit.
This kit is threaded into the pump assembly.
It is connected to the Chemical Siphon Tube that is placed in a container that contains the cleaner you are using.
The O-Rings are placed on the Bronze nozzle, then the spring will go in first, then the steel ball, then thread in the nozzle.

Genuine Homelite replacement part, this item is sold individually.
This Trigger Housing Assembly is used on the Homelite models listed below.
This has a few features that are in included with it.

This replacement foot is an authentic OEM part made to fit the machines listed below. It is attached over the frame's metal feet with a bolt and, in some models, a washer (both sold separately; see manual for the specific part numbers needed for your machine). Use of these rubber foot covers helps with both sound reduction and stability. One (1) foot cover included with this purchase.

This is an OEM part sourced directly from the manufacturer. Part is sold individually. Does not include the thermal relief valve (678169004) Commonly used in pressure washers, this pump creates a high volume pressure, supplying water through the high pressure hose, to the gun, and out through the pressure wand. This specific pump is only sold as a complete assembly.