The heater core/coil is a radiator-like device used in heating the cockpit of your motorhome; hot coolant from the vehicle’s engine is passed through a winding tube of the core. It’s a heat exchanger between coolant and cabin air.
Measures about 17.5 inches by 6.25 inches. The core alone measures about 16 1/2 in x 6 1/4 in x 2 in. For REV Group class A motorhomes / RVs such as American Coach, Holiday Rambler, Fleetwood and Monaco Coach. RV Elite part number 08540928.
