Airtex 41209 Mechanical Fuel Pump

Mechanical Fuel Pump for Classic GM Applications

Airtex 41209 is a mechanical fuel pump for classic, performance, and non-fuel-injected vehicles that use a 2-line pump setup. It is built to meet or exceed OEM specifications for fit and performance, with precision castings, a hardened rocker, and an advanced polymer diaphragm for consistent fuel delivery across multiple fuel blends.

Compatible With select Buick, Chevrolet, Cadillac, Oldsmobile, and Pontiac models from 1977-1985, including applications such as the Buick LeSabre, Chevrolet Monte Carlo, and Pontiac Firebird. Airtex 41209 is factory tested throughout production for dependable out-of-box operation.

Key Features

• Mechanical external fuel pump with one threaded outlet
• Hose connection inlet with 3/8 inch inlet fitting thread size
• 5/8-18 UNF-2B outlet fitting thread size
• Flow rate: 25; minimum pressure: 5.8
• Gasket included; mounting hardware not included
• 100% factory tested during the manufacturing process
• Coverage for classic, performance, and non-fuel-injected vehicles

Detailed Description

Airtex 41209 is a specific-fit mechanical fuel pump for external mounting on carbureted vehicles that rely on a mechanical fuel delivery system. The pump uses precision castings and a hardened rocker to support long service life, while the polymer diaphragm helps maintain steady performance with today’s fuel blends. This part cross-references Carter M6951 for the same application.

Use Airtex 41209 when replacing a worn mechanical pump on compatible Buick, Chevrolet, Cadillac, Oldsmobile, and Pontiac vehicles. The part number 41209 is commonly searched for classic GM fuel system service, including Buick Regal, Chevrolet Caprice, and Oldsmobile Cutlass applications.

What It Helps Fix

• Hard starting caused by weak fuel delivery
• Fuel starvation under normal driving conditions
• Low fuel pressure from a worn mechanical pump
• Inconsistent fuel flow in carbureted systems
• Service issues on aging classic-car fuel systems

Installation Notes and Tips

Replace the fuel filter when installing this pump. Confirm the vehicle uses a 2-line pump configuration before ordering, and verify inlet and outlet thread sizes against the original part. Because mounting hardware is not included, reuse or source the required fasteners as needed. Airtex 41209 is an external mechanical pump for non-fuel-injected applications only.

Quality Assurance

Airtex tests every pump throughout the manufacturing process to support consistent performance before it leaves production. The design is built to meet or exceed OEM fit and performance expectations for the listed classic vehicle applications.

Compatible Vehicle Applications

• Fits 1978-1985 Buick LeSabre, N/A, with 2 Line Pump
• Fits 1978-1985 Buick Regal, N/A, with 2 Line Pump
• Fits 1980-1985 Chevrolet Caprice, N/A, with 2 Line Pump
• Fits 1980-1985 Chevrolet Impala, N/A, with 2 Line Pump
• Fits 1978-1985 Chevrolet Monte Carlo, N/A, with 2 Line Pump
• Fits 1981-1985 Pontiac Parisienne, N/A, with 2 Line Pump
• Fits 1978-1984 Chevrolet El Camino, N/A, with 2 Line Pump
• Fits 1978-1984 Oldsmobile Cutlass Calais, N/A, with 2 Line Pump
• Fits 1979-1984 Oldsmobile Cutlass Supreme, N/A, with 2 Line Pump
• Fits 1978-1984 Oldsmobile Delta 88, N/A, with 2 Line Pump
• Fits 1980-1984 Pontiac Bonneville, N/A, with 2 Line Pump
• Fits 1978-1984 Pontiac Grand Prix, N/A, with 2 Line Pump
• Fits 1978-1983 Chevrolet Malibu, N/A, with 2 Line Pump
• Fits 1981-1983 Oldsmobile 98, N/A, with 2 Line Pump
• Fits 1981-1983 Oldsmobile Cutlass Cruiser, N/A, with 2 Line Pump
• Fits 1978-1983 Pontiac Grand LeMans, N/A, with 2 Line Pump
• Fits 1980-1982 Cadillac DeVille, N/A, with 2 Line Pump
• Fits 1980-1982 Cadillac Fleetwood, N/A, with 2 Line Pump
• Fits 1982 Cadillac Seville, N/A, with 2 Line Pump
• Fits 1978-1981 Buick Century, N/A, with 2 Line Pump
• Fits 1980-1981 Chevrolet Camaro, N/A, with 2 Line Pump
• Fits 1978-1981 Oldsmobile Cutlass, N/A, with 2 Line Pump
• Fits 1978-1981 Pontiac Catalina, N/A, with 2 Line Pump
• Fits 1978-1981 Pontiac Firebird, N/A, with 2 Line Pump
• Fits 1978-1981 Pontiac LeMans, N/A, with 2 Line Pump
• Fits 1978-1980 Oldsmobile Cutlass Salon, N/A, with 2 Line Pump
• Fits 1978-1979 Buick Skylark, N/A, with 2 Line Pump
• Fits 1978-1979 Oldsmobile Omega, N/A, with 2 Line Pump
• Fits 1979 Pontiac Grand Am, N/A, with 2 Line Pump
• Fits 1978-1979 Pontiac Phoenix, N/A, with 2 Line Pump
• Fits 1978 Oldsmobile Cutlass Supreme, N/A
• Fits 1977 Buick Century, N/A, Late Production; with 2 Line Pump
• Fits 1977 Buick LeSabre, N/A, Late Production; with 2 Line Pump
• Fits 1977 Buick Regal, N/A, Late Production; with 2 Line Pump
• Fits 1977 Buick Skylark, N/A, Late Production; with 2 Line Pump
• Fits 1977 Oldsmobile Cutlass, N/A, Late Production; with 2 Line Pump
• Fits 1977 Oldsmobile Cutlass Supreme, N/A, Late Production; with 2 Line Pump
• Fits 1977 Oldsmobile Delta 88, N/A, Late Production; with 2 Line Pump
• Fits 1977 Oldsmobile Omega, N/A, Late Production; with 2 Line Pump
• Fits 1977 Pontiac Catalina, N/A, Late Production; with 2 Line Pump
• Fits 1977 Pontiac Firebird, N/A, Late Production; with 2 Line Pump
• Fits 1977 Pontiac Grand LeMans, N/A, Late Production; with 2 Line Pump
• Fits 1977 Pontiac LeMans, N/A, Late Production; with 2 Line Pump
• Fits 1977 Pontiac Phoenix, N/A, Late Production; with 2 Line Pump