Description
Specifications and application matching
Match Kat’s 11431 400 Watt 44.5mm Frost Plug Heater within Freeze Plug Type by the recorded specifications rather than the product name alone. Primary match point: Product identity: Kat’s 11431 400 Watt 44.5mm Frost Plug Heater.
Secondary technical evidence: Operates by being directly submerged into coolant and heating the block. A further identifier or specification to verify is: Category: Replacement Parts / Engines & Engine Parts / Engine Heaters & Accessories / Engine Heaters / Freeze Plug Type.
Technical verification
Compare the stated identifiers, dimensions, material, option, and application details with the item being replaced before ordering.
Complete source-backed product details
A frost plug heater is an electric heater that heats the engine of a vehicle to give quicker starts and protects your engine from damage that can occur during cold weather starts. Warmed engines also deliver better fuel economy, plus improves oil flow to provide better lubrication to the engine, which reduces wear and increases engine life. The frost plug heater also cuts back on pollution as it aids in vaporization of fuel, thereby cutting back on emissions.
Source product highlights
- Most efficient and reliable way to pre-heat engine block
- Operates by being directly submerged into coolant and heating the block
- Applications are specific to part numbers
- Also referred to as freeze plug heaters or block heaters
- Installation requires mechanical ability




Phill The Krill –
Garbage. Made from chinese playdough. Crumbled away and leaked didn’t even get to plug it in. Trash. Kats products have all been trash. This was their last chance. All the other kat heaters failed as well.