Dorman 521-979 Suspension - Trailing Arm
Confirm Fitment Before You Buy
Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price
$52.66
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Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.
Product Description
Engineered for passenger safety and rigorously tested for secure performance, this trailing arm was designed as a direct replacement for your vehicle's original part. Industry-leading evaluation process ensures smooth ride and predictable handling.
- Direct replacement - this suspension trailing arm fits and functions like the original equipment part
- Quality construction - manufactured from same materials as original equipment for safety and reliability
- Durable - protective finish for long-lasting corrosion resistance
- Quality tested - has undergone testing to ensure proper fit and performance
Detailed Applications
| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| 2009 | Chevrolet | Trailblazer | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2009 | GMC | Envoy | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2008 | Chevrolet | Trailblazer | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2008 | GMC | Envoy | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2007 | Buick | Rainier | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2007 | Chevrolet | Trailblazer | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2007 | GMC | Envoy | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2006 | Buick | Rainier | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2006 | Chevrolet | SSR | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2006 | Chevrolet | Trailblazer | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2006 | GMC | Envoy | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2005 | Buick | Rainier | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2005 | Chevrolet | SSR | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2005 | Chevrolet | Trailblazer | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2005 | GMC | Envoy | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2004 | Buick | Rainier | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2004 | Chevrolet | SSR | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2004 | Chevrolet | Trailblazer | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2004 | GMC | Envoy | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2004 | Oldsmobile | Bravada | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2003 | Chevrolet | SSR | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2003 | Chevrolet | Trailblazer | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2003 | GMC | Envoy | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2003 | Oldsmobile | Bravada | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2002 | Chevrolet | Trailblazer | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2002 | GMC | Envoy | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) | |
| 2002 | Oldsmobile | Bravada | Rear Upper | wo/RPO Code G67 (Auto Air Level Control) |
Product Specifications
| Adjustable: | No |
|---|---|
| Attachment Type: | Welded |
| Ball Joint Included: | No |
| Ball Joint Installed: | No |
| Ball Joint Stud Type: | Threaded |
| Bushing Color: | Black |
| Bushing Material: | Rubber |
| Bushings Included: | Yes |
| Color: | Black |
| Control Arm Type: | Casting/Forged |
| End 1 Type: | Press In |
| End 2 Type: | Press In |
| Finish: | Powder Coated |
| Grade Type: | Regular |
| Grease Fitting Included: | No |
| Length: | 262.5 mm |
| Material: | Steel |
| Mounting Hardware Included: | No |
| Mounting Hole Diameter: | 14.5 mm |
| Package Contents: | Control Arm |
| Package Quantity: | 1 |
| Packaging Type: | Box |
| Pre Greased: | No |
| Stamped End: | No |
OE Numbers
| DIRECT OE CROSS | |
|---|---|
| 15069837 | GENERAL MOTORS |
| 15070033 | GENERAL MOTORS |
| 15098152 | GENERAL MOTORS |
| 15116112 | GENERAL MOTORS |
| 15133515 | GENERAL MOTORS |