Rebuild Kit Autolite 4100 Carburettor suits all 4100 incl. Mustang & Thunderbird, except 1957 Ford

• Suits All Autolite 4100 Carburettors – Designed for all 4100 models except 1957 Ford as they need early pump diaphragm.
• Premium Kit Contents – Includes gaskets, Viton-tipped needle and seats, power valve, check valves, and hardware.
• Correct No. 46 Diaphragm – Replaces Fuelmiser FD-302, this kit has the No. 46 diaphragm compatible with post-1957 4100 units; whereas the 1957 models use a No. 59 diaphragm (not included).

• USA Made

This rebuild kit suits all Autolite 4100 carburettors including Mustang and Thundebird. Does not suit the early 1957 Ford version, which requires a different accelerator pump diaphragm. Featuring a No. 46 diaphragm, this kit matches the standard design used on the 4100 carburetor from 1958 onward across Ford and Mercury vehicles.

Perfect for restoring reliable cold starts, smooth throttle response, and leak-free performance, the kit includes everything needed for a thorough overhaul using fuel-safe, modern materials.

Kit Contents:

• Flange gasket
• Float bowl gasket
• Venturi gasket
• Thermostat gasket
• Choke housing gasket
• Power valve & gasket
• Accelerator pump diaphragm (#46) & gasket
• Pump diaphragm check valve
• Viton-tipped needle & seat (x2)
• Needle-to-float clip (prevents sticking)
• Seat clip
• Main discharge gasket
• Main discharge check ball

For more classic Ford carburettor parts and rebuild components, explore our full Autolite 4100 Carburettor Rebuild Kits and 4100 Parts collections.