Oil Pre-Heater - Self Contained

The MOROSO Oil Pre-Heater Self Contained (model 23991) is a 400-watt engine oil heating system designed to bring lubricant to operating temperature before cold-weather starts or extended idle periods. This self-contained pre-heater unit eliminates the thermal stress of running cold oil through critical engine bearings, reducing wear and extending powertrain life—a proven concern for performance builders, fleet operators, and high-mileage enthusiasts working in northern climates or storing vehicles seasonally.

The unit features a 400-watt capacity and operates at a voltage of 110V/120V, with a 3-foot power cord. It mounts via a weld-on aluminum fitting with 1/2-inch NPT threads, a standard interface compatible with most oil pan sumps and remote filter housings. The internal element design means the heating element is sealed within the oil circuit, eliminating external exposure and corrosion concerns.

This pre-heater is essential for serious cold-start protection in vintage restorations, winter storage protocols, and professional fleet maintenance where minimizing cold-running cycles translates directly to lower bearing load and reduced combustion chamber deposit buildup. Off-road builders and track enthusiasts also use oil pre-heaters during multi-vehicle events to ensure optimal engine performance.