This kit includes the components we typically replace when doing a regular service or repair. In the case of the 2.2KW Belief Air Heater this includes the front and back gaskets (three and four hole gaskets), the glow plug burner screen, and the glow plug. The main cost of the kit is the glow plug and, if it needs replacing, it makes sense to replace the burner screen and gaskets at the same time.
These parts often need replacing after extended heater use because they get clogged with soot. The best way to prolong the glow plug’s life is to turn the air heater on high for 5 to 10 minutes before shutting it off to burn off excess soot.