1,STABLE PERFORMANCE: Coolant preheaters are vibration and shock tested for stable performance and long service life. 2,HIGH EFFICIENCY: Compared with other preheaters, the coolant preheater can greatly reduce heat loss and improve operating efficiency. 3,IP54 PROTECTION GRADE: The protection level of the preheater is IP54, which can be dustproof and waterproof, and ensure the safety of use. 4,DURABLE AND STURDY: The aluminum alloy material has good anti rust and anti corrosion properties, and the added nickel chromium iron alloy can also prolong its service life. 5,WIDE APPLICATION: This water jacket heater is widely used in the coolant preheating work of various engines to improve work efficiency. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.