The Hotstart JDS-101 is an In-Block Heater that mounts directly into the water jacket of heavy-duty truck engines. Designed to ensure reliable engine starts even in the coldest conditions. Order your JDS-101 in-block engine heater today from Power Systems Plus in Oregon!
John Deere
Engine Model
With 1-5/8” opening on the side of the water jacket
*1-5/8” (1.625”) threaded opening on the side of the block in the water distribution channel.









