Genuine Moog K506 Upper Ball Joint (NORS)
Restore the legendary ride quality and steering precision of your classic 1958 Pontiac with this genuine Moog K506 Upper Ball Joint. Proudly Made in the USA, this New Old Replacement Stock (NORS) component is an authentic factory-spec part designed for the unique front suspension requirements of the 1958 model year. Whether you are cruising in a Bonneville, Star Chief, or Chieftain, this heavy-duty ball joint ensures proper wheel alignment and eliminates the front-end play common in aging vintage chassis. Built during the era of Moog's "Problem Solver" engineering, this part provides superior metallurgy and fitment that modern reproductions simply cannot match, making it the definitive choice for your 370 V8 powered Pontiac restoration.
Key Features:
- Brand: Moog
- Part Number: K506
- Interchange: Pontiac 531353
- Position: Front Upper (Left or Right)
- Engine: 6.1L 370 V8
- Origin: Made in USA
- Condition: NORS (New Old Replacement Stock)
Verified Vehicle Fitment:
| Make |
Model |
Year |
Notes |
| Pontiac |
Bonneville / Star Chief |
1958 |
Front Upper Position |
| Pontiac |
Chieftain / Super Chief |
1958 |
Front Upper Position |
| Pontiac |
Catalina |
1958 |
Front Upper Position |
Fits Years:
1958
Note on Stock Photos: Due to our inventory of multiple identical units for this specific part number, we utilize representative stock photos for this listing. You will receive a component that strictly meets all listed specifications and fitment requirements. Please be aware that because these are vintage parts, minor cosmetic variations—such as surface finish, color, or production markings—may exist between different manufacturing runs. These slight aesthetic differences are a result of historical production processes and do not impact the part's integrity, performance, or authenticity.
A Note on Fitment Accuracy: We manually research and cross-reference our fitment data using vintage manufacturer catalogs. While we strive for 100% accuracy, these decades-old resources—and the humans reading them—can occasionally contain errors. Additionally, these parts may fit other vehicles and years not explicitly listed in our data. To ensure a seamless restoration, we kindly ask that you perform your own due diligence and verify that this specific part number is correct for your application prior to purchase.
Unbeatable Prices & Expectations
While many of our vintage parts were manufactured decades ago, they remain unused and high-quality. Some original boxes may show signs of shelf-wear, such as dust, tape, or surface distress from years of storage. Rest assured, the components inside have been inspected to ensure they are complete and ready to help you finish your project without breaking the bank.
