Dorman 594-444 Engine Harmonic Balancer

Dorman 594-444 Harmonic Balancer

Dorman 594-444 is a direct replacement engine harmonic balancer for select Chevrolet Colorado, GMC Canyon, Hummer H3, Hummer H3T, and Isuzu i-350/i-370 applications. It uses a stress-resistant rubber bond to help absorb engine vibration, while ductile steel construction adds tensile and impact strength for long-term durability.

Key Features

• Direct replacement harmonic balancer for OE-style fit and function
• Stress-resistant rubber bond helps isolate engine vibration
• Ductile steel construction for added strength and durability
• Black finish
• Serpentine drive belt type with 6 pulley grooves
• Part number 594-444 for easy identification

Detailed Description

This harmonic balancer is built for engines that need stable crankshaft vibration control and reliable belt drive operation. With a 31.94 inside diameter, 201.2 outside diameter, and 45.5 depth, Dorman 594-444 is engineered as a direct replacement for the original balancer used on 2004-2012 Chevrolet Colorado and GMC Canyon, plus 2006-2010 Hummer H3, 2009-2010 Hummer H3T, 2007-2008 Isuzu i-370, and 2006 Isuzu i-350 applications. This part cross-references PowerBond by Dayco PB1665N for the same application.

Use Dorman 594-444 when you need a replacement harmonic balancer that supports crankshaft vibration damping and maintains proper serpentine belt alignment. The ductile steel body and bonded rubber construction are selected to handle engine load and repeated vibration in everyday driving conditions.

What It Helps Address

• Engine vibration felt through the crankshaft and accessory drive
• Worn or separated harmonic balancer rubber bond
• Crank pulley wobble or belt tracking concerns
• Noise from a deteriorated front engine vibration damper
• Loss of smooth serpentine belt operation

Installation Notes and Tips

Verify pulley groove count, inside diameter, outside diameter, and depth against the original part before installation. This balancer does not include a center bolt or washer, and degree markings are not provided. Confirm the vehicle’s engine configuration and accessory drive layout before service. For best results, inspect the serpentine belt and related front-end drive components during replacement.

Quality Assurance

Dorman manufactures this harmonic balancer as a direct replacement component with materials chosen for vibration control and durability. Part number 594-444 is built to match the intended OE-style application for select Chevrolet Colorado, GMC Canyon, and related GM and Isuzu models.