Dayco 89171 Accessory Drive Belt Tensioner Pulley - Alternator or Grooved Pulley

Overview of Dayco Accessory Drive Belt Tensioner Pulley 89171

The Dayco 89171 accessory drive belt tensioner pulley is engineered for reliable performance in various vehicle models including Buick, Chevrolet, Ford, Pontiac, and Saturn. Designed with durable steel construction and precise specifications, this pulley supports serpentine belt systems to maintain optimal belt tension and alignment.

• Constructed from high-strength steel for durability
• Features 6 grooves compatible with serpentine belts
• Bearing inner diameter of 17 mm and bearing width of 14 mm
• Supports a maximum belt width of 6 ribs
• Includes a single bearing for smooth operation

Technical Details and Specifications

The Dayco 89171 tensioner pulley is designed to fit accessory drive belt systems requiring a 6-groove pulley compatible with serpentine belts. Its steel material ensures resistance to wear and heat, critical for maintaining belt tension under engine load. The bearing inner diameter measures 17 mm with a 14 mm bearing width, providing stable rotation and reducing friction. This pulley supports belts up to 6 ribs wide, making it suitable for a range of OEM belt configurations.

Compatible Vehicles and Applications

This accessory drive belt tensioner pulley is compatible with multiple vehicle makes and models, including Buick Aura, Chevrolet Equinox, Ford F-150, Pontiac G6, Impala, Malibu, Montana, Monte Carlo, Relay, Terraza, Torrent, Uplander, and Saturn Vue. The part number 89171 ensures precise fitment for these vehicles’ accessory drive systems, helping maintain proper belt tension and engine accessory function.

• Maintains proper serpentine belt tension
• Prevents belt slippage and misalignment
• Reduces noise caused by worn or loose belts
• Supports smooth operation of alternator, power steering, and A/C compressor
• Helps avoid premature belt wear and engine accessory failure

Installation Notes and Tips

When installing the Dayco 89171 tensioner pulley, ensure the serpentine belt is properly routed according to the vehicle’s belt diagram. Verify that the pulley grooves align with the belt ribs to prevent slippage. Use appropriate tools to remove and install the pulley without damaging the bearing or mounting hardware. Inspect the belt and other tensioner components for wear during installation to maintain system reliability.

Quality Assurance and Warranty

Dayco manufactures the 89171 accessory drive belt tensioner pulley to meet or exceed OEM standards. The steel construction and precision bearing design contribute to long service life and consistent performance. While specific warranty details may vary, Dayco products typically come with a limited warranty covering defects in materials and workmanship, providing confidence in product reliability.