Dorman 594-390 Engine Harmonic Balancer

Dorman 594-390 Harmonic Balancer for Ford V8 Applications

Dorman 594-390 is a direct replacement engine harmonic balancer for select Ford F-150 and Econoline applications. It uses a stress-resistant rubber bond to absorb engine vibration, while ductile steel construction adds tensile and impact strength for long-term durability.

Key Features

• Direct replacement harmonic balancer for select Ford truck and van applications
• Stress-resistant rubber bond helps isolate engine vibration
• Ductile steel construction for added strength and durability
• Black finish with degree markings for timing reference
• Serpentine drive belt type application
• Grade type: regular
• Mounting hole quantity: 1

Detailed Description

This Dorman harmonic balancer, part number 594-390, is built for Ford engine applications that require vibration control and reliable crankshaft damping. The bonded rubber element helps absorb torsional vibration from the engine, while the steel body provides the strength needed for demanding daily use. Degree markings are included for timing-related service and setup, and the black finish gives the balancer a clean OE-style appearance. This part cross-references ATP 102330 for the same application.

Compatible With 1997-1998 Ford F-150, w/One Piece Design; 1999-2010 Ford F-150; 2004 Ford F-150 Heritage; 1997-1998 Ford E-150 Econoline, w/One Piece Design; 1997-1998 Ford E-150 Econoline Club Wagon, w/One Piece Design; 1997-1998 Ford E-250 Econoline, w/One Piece Design; 1999-2002 Ford E-150 Econoline; 1999-2002 Ford E-150 Econoline Club Wagon; 1999-2002 Ford E-250 Econoline; 1999-2001 Ford Econoline; 2002-2003 Ford E-150; 2003 Ford E-150 Club Wagon; 2003 Ford E-250; 2003 Ford Econoline.

Common Problems This Part Addresses

• Engine vibration felt through the crankshaft and accessory drive
• Worn or separated balancer rubber bond
• Timing reference issues during service
• Crankshaft damping concerns on high-mileage Ford F-150 and Econoline engines
• Noise or imbalance from a deteriorated harmonic balancer

Installation Notes and Tips

Verify engine configuration and balancer style before installation, especially on 1997-1998 Ford F-150 and Econoline models with the one-piece design note. Confirm serpentine belt alignment, inspect the crankshaft snout and keyway for wear, and check timing marks against the engine service procedure. Because bolts and washers are not included, reuse or source the correct fasteners separately as required by the vehicle application.

Quality Assurance

Dorman manufactures this harmonic balancer as a direct replacement part with materials selected for vibration control and durability. The ductile steel construction and bonded rubber design support dependable service in Ford truck and van engine applications.