The Planar diesel heater is already pretty quiet. But this replacement fuel pump significantly reduces the standard fuel pump's ticking sound to where it's barely noticeable.
Swapping out the old fuel pump with this quiet pump is a breeze. Simply loosen the two hose clamps, pull off the hoses of the old pump, swamp in the new pump and tighten the hose clamps.
When replacing the pump, it may be necessary to prime the pump. Please see your heater manual for instructions on how to do this.
It's imperative that you match the pump with your heater size, as they are calibrated for specific heaters.