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

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$179.95
Rebuild Kit Autolite 4100 Carburettor suits all 4100 incl. Mustang & Thunderbird, except 1957 Ford
Part Number: KM2

Product Description

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.




  • 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).


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

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