3979639
In-Block Pre-Heater Seal
Mack

This in-block pre-heater seal is vital for maintaining the integrity of engine block heating systems. It prevents coolant leaks around the pre-heater unit, ensuring efficient engine warm-up during cold weather. Proper sealing reduces the risk of coolant contamination and engine overheating, which can lead to costly repairs. Made from durable materials, this seal withstands high temperatures and pressure variations within the engine block. Its installation is straightforward, providing a reliable barrier that preserves the pre-heater’s functionality. Maintaining a tight seal around the pre-heater enhances engine start-up performance and reduces emissions. Source One Parts Center offers this seal to support your engine's cold-weather operation and longevity.