Product Description
Genuine 6550 Fuel Pump (Vintage Rebuilt)
Restore the fuel delivery system of your classic Pontiac with this genuine 6550 mechanical fuel pump. This is a vintage rebuilt part, manufactured in the USA. It has been professionally remanufactured using a high-quality original core to ensure period-correct appearance and reliable performance for your high-performance Pontiac V8 engine.
This part is designed for the engine-mounted position on 1963-1965 Pontiac models. According to the Master Fuel Pumps Catalog, it is the correct application for the Tempest and LeMans equipped with the 326 CID V8, and standard full-size models including the Grand Prix and Catalina equipped with 389 CID or 421 CID engines (specifically those with Air Conditioning). This single-action mechanical pump is engineered to meet original factory specifications for fuel pressure and flow.
Note on Stock Photos: Due to our volume of identical, interchangeable inventory, we use representative stock photos for this model. The image is for reference only and may depict a specific manufacturer (e.g., 'AC'). You will receive a pump that meets all listed specifications, which may be from the manufacturer shown or a fully equivalent alternative.
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 pumps 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.
Key Features:
- Part Number: 6550 (Master 6550M)
- Interchange / Replaces OEM: GM 5656550
- Position: Engine Mounted
- Engine Fitment: Pontiac V8 (326, 389, 421 CID)
- Origin: Made in USA (Vintage Stock)
- Condition: Vintage Rebuilt
Verified Vehicle Fitment:
| Make | Model | Year | Engine | Notes |
| Pontiac | Tempest / LeMans | 1963-1965 | 326 V8 | Standard Equipment |
| Pontiac | Grand Prix / Catalina / Bonneville | 1963-1964 | 389, 421 V8 | With Air Conditioning |
| Pontiac | All Models (Exc. Tempest) | 1965 | 389 V8 | With Air Conditioning |
Fits Years:
1963 1964 1965
Unbeatable Prices & Expectations
We scour the country to find the best deals on NOS and NORS parts so we can pass the savings on to you. Our vintage inventory is acquired from old auto parts stores, warehouses, and private collections. While these parts are unused or professionally rebuilt, their packaging and surfaces may show signs of shelf wear or age due to decades of storage. Rest assured, every part is a genuine piece of automotive history, built to the standards of the era it represents.
