Gates YZ4Z-6A228AA DriveAlign Automatic Belt Tensioner Assembly

The Gates YZ4Z-6A228AA (Gates part number 38188) is a premium DriveAlign automatic belt tensioner assembly engineered to maintain optimal tension on your vehicle's accessory drive belt system. This OE-quality tensioner ensures efficient operation of critical components including the alternator, power steering pump, air conditioning compressor, and other belt-driven accessories.

Key Features:

• OE-level quality, reliability, and fitment for Ford, Mazda, and Mercury vehicles
• Patented labyrinth seal protects internal components to meet or exceed OE life expectancy
• Patented vibration damping system absorbs extreme vibration to extend belt and accessory life
• Torsional round spring design provides consistent tension and prevents contamination
• Thermoplastic construction manufactured to rigid tolerances for precise OE fit
• 6-groove V-ribbed pulley with 2.76-inch outside diameter
• Complete tensioner assembly includes pulley and mounting hardware

Specifications:

• Bearing bore inside diameter: 0.67 inches (17mm)
• Pulley outside diameter: 2.76 inches (70mm)
• Pulley width: 0.98 inches (25mm)
• Belt type: V-ribbed (serpentine)
• Mounting holes: 2

This tensioner automatically adjusts belt tension to dampen peak loads during engine acceleration and deceleration, preventing belt slippage, squealing, and premature wear. Regular inspection is recommended every 60,000 to 90,000 miles, with immediate replacement if you notice squeaking noises, loose belts, or abnormal belt wear.

Replaces OEM Part Numbers: Ford YZ4Z-6A228-AA, Ford YS4Z-6A228-AA, Ford F8RZ-6A228-AA, Ford F8RZ-6A228-BA, Ford 97BB-6A229-AG, Mazda YF0915980, Dayco 89318, Dorman 419-212, Four Seasons 45557, SKF VKM34010