KatsHeaters 11448 400 Watt 35mm Frost Plug Heater

The KatsHeaters 11448 is a 400-watt frost plug heater designed to keep your engine warm in cold weather conditions. This direct-fit heater installs in place of a 35mm frost plug (also called a freeze plug or expansion plug) in your engine block, providing reliable engine preheating that makes cold starts easier and reduces engine wear.

Key Features:

• 400-watt heating element provides efficient engine block warming
• Designed for 35mm frost plug openings
• Helps reduce cold-start engine wear and improves oil circulation
• Makes starting easier in freezing temperatures
• Reduces warm-up time and improves cabin heating
• Simple installation in place of existing frost plug
• Durable construction for long-lasting performance

Frost plug heaters are one of the most effective methods of engine preheating, warming the coolant and engine block directly. This helps maintain proper oil viscosity, reduces strain on the battery and starter, and can improve fuel efficiency during warm-up. The 11448 is ideal for diesel and gasoline engines in cars, trucks, RVs, and marine applications where cold weather operation is a concern.