Kat's Frost Plug Engine Heater - 1-3/4\ NPT (44.5 MM) 600 Watt w/ 120 Volt Farmer Bob's Parts K7FR
- Freeze Plug Heater, also referred to as a block heater or frost plug heater is the most reliable and efficient way to pre-heat your engine. Operates by being directly submerged into coolant and heating the block. Most efficient and reliable way to pre-heat engine block..
- 10609, 815705, GE24, K7FR, K962705, 11609.