Dorman 594-120 Engine Harmonic Balancer

Engine Harmonic Balancer for Mazda and Ford

Dorman 594-120 is a direct replacement engine harmonic balancer built to help control crankshaft vibration in select Mazda and Ford applications. It uses a stress-resistant rubber bond and ductile steel construction to support durability in demanding engine environments.

Key Features

• Direct replacement harmonic balancer for OE-style fit and function
• Stress-resistant rubber bond helps absorb engine vibration
• Ductile steel construction adds tensile and impact strength
• Black finish with degree markings for timing reference
• Includes bolt and washer, Woodruff key, and instruction sheet
• Serpentine drive belt type application
• Part number: 594-120

Detailed Description

This Dorman harmonic balancer is engineered for vehicles that need stable crankshaft vibration control and reliable accessory drive operation. It is a direct replacement for select 1993-1997 Ford Probe, 1993-1997 Mazda 626, 1993-1997 Mazda MX-6, and 1995-2002 Mazda Millenia applications. The ductile steel body and bonded rubber isolator are specified to support long-term service in engines that rely on accurate harmonic damping. This part cross-references ATP 102125 for the same application. Part number 594-120 is also a practical search match for buyers looking for a Mazda 626 harmonic balancer, Mazda MX-6 harmonic balancer, or Ford Probe harmonic balancer replacement.

What It Helps Address

• Crankshaft vibration that can affect engine smoothness
• Worn or damaged harmonic balancer rubber bond
• Timing reference visibility with faded or missing degree markings
• Accessory drive concerns related to a deteriorated balancer
• Replacement needs after balancer wear, cracking, or imbalance

Installation Notes and Tips

Verify engine and accessory drive configuration before installation. Use the included Woodruff key and follow the instruction sheet for proper alignment and torque procedures. Inspect the crankshaft snout, pulley surfaces, and surrounding components for wear before installing the new balancer. Confirm the degree markings are positioned for your timing setup.

Quality Assurance

Dorman designs this replacement harmonic balancer with materials selected for strength and vibration control. The ductile steel construction and bonded rubber isolator support dependable service in compatible Mazda and Ford engine applications.