2440 Coolant heater

[beenthere]

If "hot", electrical cord, and oily surrounding "per the pic" shown, then I'd consider some serious de-greasing.
My recollection of these heaters in my cars and my old 2-cyl 420 JD was they were not very long lasting or of highest quality materials.

 

[jenkinsph]

Forced Flow Circulation Heaters | Phillips & Temro Industries

I would consider a Taco circulation pump a better way to go. Used for hydronic heating and is a common pump to purchase with magnetic drive and uses replaceable cartridges. Install it in line before the heater element.

 

[Erik M]

Anyone have experience with this?

I have this unit installed in mine and with the exceptionally cold weather I have used it. 20-30 min makes starting so much easier.