80" Base Locators
The locators attach to the underside of the seat base with the correct bolt that's supplied with them, the seat base has two internal threads on the underside.
Each base has two locators, these allow the seat base to be held in position by locating into the holes in the seat box. As the locator passes through the whole the flange around the locator (once through the hole) stops the seat base from coming back out.
This allows the base to be lifted in and out whilst topping up with fuel.