Automatic Belt Tensioner Assembly

The Mopar 89377, also known as the Dayco 89377, is an automatic belt tensioner assembly engineered for a wide range of Chrysler, Dodge, Jeep, and Ram vehicles. This heavy-duty, wear-resistant component plays a crucial role in maintaining proper belt tension, which is essential for the function of accessories such as the alternator, power steering pump, water pump, and air conditioning compressor. By ensuring smooth belt routing and accurate tensioning, it helps to reduce vibrations, noise, and harshness within the engine's drive system. Constructed with superior resistance to contaminants like dirt, salt, and chemicals, this tensioner assembly is built to last. It features smoother surfaces and tighter dimensional tolerances to prolong the service life of the drive belt. Lubricated bearings and high-temperature seals are incorporated to guarantee peak performance even under demanding conditions. This part is compatible with numerous vehicles, including Chrysler 300 (2005-2019, 2.7L-6.4L), Dodge Challenger (2008-2019, various engines including 6.2L V8 Main Drive), Dodge Charger (2006-2019, various engines including 6.2L V8 Main Drive), Dodge Durango (2009-2018, 5.7L V8), Jeep Grand Cherokee (2005-2018, 5.7L-6.4L V8), and Ram 1500/2500/3500 (2009-2010 and 2011-2018, 5.7L V8). It also fits certain Volkswagen Routan models (2009-2010, 3.8L V6). It is important to verify fitment with your specific vehicle's year, make, model, and engine before purchase. The tensioner assembly contains a metallic locator pin to withstand extreme drive demands and properly locate the tensioner during installation.