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DAYCO 89442  
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DAYCO 89442 Specifications
Belt TypeSerpentine
DirectionClock Wise
Number of Pulleys1
Pulley 1 Diameter74 mm
Pulley 1 FlatY
Pulley 1 Width39.25 MM
Automatic Tensioner; Heavy Duty
As the major supplier to heavy duty original equipment manufacturers, this Dayco® No slack® Heavy Duty Tensioner is guaranteed to be engineered and manufactured to the strictest design specifications.

Features & Benefits:
  • Patented "flat spring" design that's engineered to handle the higher torque and power pulses exerted by today's diesel engines
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
  • Rugged pulleys with double lifetime lubricated bearings deliver long lasting, dependable service
  • "Extremely damped" design using a wave spring and a metal ring with a bonded rubber surface to act as a "radial shock absorber" for the tensioner arm
How Dayco Tensioners Are Constructed

Service Tip: Always replace belts and tensioners together. Old tensioners will reduce a belt's lifespan, and can lead to issues such as overheating, a dead battery, diminished power steering, or poor air conditioning performance.

Features and Benefits of Dayco Tensioners

OEM / Interchange Numbers: 1830033C2, 3102888, D11862609, RE57498B

Warranty Information:
12 Months/12,000 Miles