Dorman 594-220 harmonic balancer for the 2002-2009 Chevrolet Trailblazer 6-cylinder 4.2L and other vehicles absorbs engine vibration at the crankshaft. Also called an engine harmonic balancer, it is a direct replacement with the same fit and function as the original.
- Part of the Dorman OE Solutions line
- Stress-resistant rubber bond to absorb engine vibration
- Stringent standards for tensile and impact strength
- Dimensional verification, material validation and functional testing
- Cast iron construction
Quick facts
- Part: Dorman 594-220 harmonic balancer
- Also called: engine harmonic balancer
- Fits: 2002-2009 Chevrolet Trailblazer 6-cylinder 4.2L and other vehicles
- Material: Cast iron
- Condition: New
Cracked or separated rubber, a pulley that wobbles, or new vibration from the engine can mean a balancer is worn. Before you replace it, rule out a loose or worn serpentine belt, tensioner or accessory pulley as the source.
Fits
The 2002-2009 Chevrolet Trailblazer 6-cylinder 4.2L, the 2002-2009 GMC Envoy 6-cylinder 4.2L and the 2005-2009 Saab 9-7X 6-cylinder 4.2L all fit this balancer, as do other vehicles, and each needs one. If your vehicle is not named here, look up its year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 1
- Outside diameter: 206.5 mm
- Inside diameter: 31.95 mm
- Depth: 56 mm
Build and materials
- Material: cast iron
- Drive belt type: serpentine
- Grade: standard replacement
- Condition: new
- Country of origin: China
In the box
One harmonic balancer and one instruction sheet. The center bolt, bolt and washer, and mounting hardware are not included, so plan on new ones rather than reusing the old.
Interchange: 102231 · PB1536N · 12564100 · 12571619 · 12574399 · 12578069 · 8125780690 · DA4200
This part cross-references / interchanges with the following part numbers:
102231, PB1536N, 12564100, 12571619, 12574399, 12578069, 8125780690, DA4200
Frequently Asked Questions
Is the Trailblazer harmonic balancer 594-220 right for a 2002-2009 Chevrolet Trailblazer 6-cylinder 4.2L?
Yes, Dorman 594-220 is listed for the 2002-2009 Chevrolet Trailblazer 6-cylinder 4.2L and takes one per vehicle. For another year, model or engine, look up your own vehicle in the "Vehicles it fits" section.
Does the Dorman 594-220 harmonic balancer come with a center bolt?
No. Dorman 594-220 comes with one harmonic balancer and one instruction sheet; the center bolt, bolt and washer, and mounting hardware are separate.
What size and material is this harmonic balancer?
This harmonic balancer is cast iron. It measures 206.5 mm outside diameter, 31.95 mm inside diameter and 56 mm deep.
How can I tell a harmonic balancer is wearing out?
Cracked or separated rubber, a wobbling pulley or engine vibration can mean the balancer is worn. Inspect it only with the engine off and cool, or have a shop test it.
What testing does this Dorman harmonic balancer go through?
It has undergone dimensional verification, material validation and functional testing. Its rubber bond is stress-resistant so it can absorb engine vibration.
