OE Quality
60-Day Returns

Carter M4511 Mechanical Fuel Pump
Reliable Mechanical Fuel Pump for Buick Models
The Carter M4511 mechanical fuel pump is designed to provide consistent fuel delivery for select Buick vehicles. Engineered to meet the specific requirements of Buick Century, LeSabre, Regal, Riviera, and Skylark models, this fuel pump ensures proper fuel flow and pressure for optimal engine performance.
- Mechanical fuel pump with tube inlet and threaded outlet
- Includes gasket or seal for secure installation
- Single outlet with 5/8-18 unf-2b thread size
- Flow rating of 40 minimum for steady fuel supply
- Pressure range between 5.5 and 7 psi for reliable operation
- Mounting hardware not included
Product Details and Specifications
The Carter M4511 mechanical fuel pump features a tube-type inlet and a single threaded outlet designed to fit Buick vehicles such as the Century, LeSabre, Regal, Riviera, and Skylark. The outlet fitting thread size is 5/8-18 unf-2b, ensuring compatibility with factory fuel lines. This pump delivers a minimum flow rating of 40 gallons per hour and maintains fuel pressure between 5.5 and 7 psi, which is critical for maintaining proper engine fuel delivery and performance. The included gasket or seal helps prevent leaks during installation, although mounting hardware is not provided and must be sourced separately.
Compatible Buick Models and Applications
- Buick Century mechanical fuel pump replacement
- Fuel pump for Buick LeSabre with mechanical fuel system
- Replacement pump for Buick Regal fuel delivery
- Buick Riviera fuel pump compatible with mechanical systems
- Mechanical fuel pump for Buick Skylark models
Installation Notes and Tips
When installing the Carter M4511 mechanical fuel pump, ensure the gasket or seal is properly seated to prevent fuel leaks. Since mounting hardware is not included, use the original or compatible fasteners to secure the pump. Verify the inlet and outlet connections match the vehicle’s fuel line fittings, especially the 5/8-18 unf-2b threaded outlet. It is recommended to inspect the fuel lines and related components for wear or damage during installation to maintain system integrity.
Quality Assurance and Warranty Information
Carter mechanical fuel pumps are manufactured to meet industry standards for durability and performance. The M4511 part number undergoes quality control testing to ensure consistent fuel flow and pressure within specified ranges. This product includes a gasket or seal to support a proper installation. Please refer to Carter’s warranty policy for coverage details related to defects or workmanship.
| Brand | Carter |
|---|---|
| Part Number | M4511 |
| Gasket Or Seal Included | Yes |
| Inlet Type | Tube |
| Maximum Pressure | 7 |
| Minimum Flow Rating | 40 |
| Minimum Pressure | 5.5 |
| Mounting Hardware Included | No |
| Outlet Fitting Thread Size | 5/8-18 UNF-2B |
| Outlet Quantity | 1 |
| Outlet Type | Threaded |
| Pump Type | Mechanical |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1974 | Buick | Century | 7.5L | V8 | N/A | with 3 Line Pump |
| 1974 | Buick | LeSabre | 7.5L | V8 | N/A | with 3 Line Pump |
| 1974 | Buick | Regal | 7.5L | V8 | N/A | with 3 Line Pump |
| 1974 | Buick | Riviera | 7.5L | V8 | N/A | with 3 Line Pump |
| 1973 | Buick | Century | 7.5L | V8 | N/A | with 3 Line Pump |
| 1973 | Buick | LeSabre | 7.5L | V8 | N/A | with 3 Line Pump |
| 1973 | Buick | Regal | 7.5L | V8 | N/A | with 3 Line Pump |
| 1973 | Buick | Riviera | 7.5L | V8 | N/A | with 3 Line Pump |
| 1972 | Buick | LeSabre | 7.5L | V8 | N/A | with 3 Line Pump |
| 1972 | Buick | Riviera | 7.5L | V8 | N/A | with 3 Line Pump |
| 1971 | Buick | LeSabre | 7.5L | V8 | N/A | with 3 Line Pump |
| 1971 | Buick | Riviera | 7.5L | V8 | N/A | with 3 Line Pump |
| 1971 | Buick | Skylark | 7.5L | V8 | N/A | with 3 Line Pump |
| 1970 | Buick | LeSabre | 7.5L | V8 | N/A | with 3 Line Pump |
| 1970 | Buick | Skylark | 7.5L | V8 | N/A | with 3 Line Pump |
| 1968 | Buick | Skylark | 6.6L | V8 | N/A | with 3 Line Pump |
| 1967 | Buick | Riviera | 7.0L | V8 | N/A | with 3 Line Pump |
| 1967 | Buick | Skylark | 6.6L | V8 | N/A | with 3 Line Pump |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.