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Alternator Conversion Kit, 12 Volt, 4-134, 1941-1971, Willys and Jeep Vehicles

Alternator Conversion Kit, 12 Volt, 4-134, 1941-1971, Willys and Jeep Vehicles

Part #: 12VALTCONV
Regular price $248.06
Regular price $0.00 USD Sale price $248.06 USD
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JeepsterMan has done it again with a new conversion kit. Add convenience and power with this new 12 Volt GM one wire conversion, 63 Amps. This kit is internally regulated and easy installation. Does away with your voltage regulator. Allows for one wire hookup between battery and alternator. New reproduction alternator and no core charge. More amps than your original alternator. Includes alternator, 2 brackets, 5/8" belt, 5/8" Pulley Conversion, GM one wire plug, and instructions. 12 month warranty. We also offer a 6 Volt alternator conversion. Fits: 

  • 1941-1971 WIllys and Jeeps w/ 4-134 engines, L head or F head
Alternator Conversion Instructions and Photos


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    Customer Reviews

    Based on 5 reviews
    Walter Mansfield
    Alternator Conversion Kit, 12 Volt, 4-134, 59 CJ5

    The kit is well constructed and works great with exceptions.
    [1] The belt tension bracket interferes with the oil filter line at the timing gear cover. I had to replace the oil filter hose with a steel brake line that would allow a 90-degree bend close to the fitting.
    [2] Because of the bracket being made straight it hit the top of the alternator preventing proper belt tension. Again, I had to modify the bracket by incorporating my old, curved generator bracket with the new one.
    [3] THE SOLUTION: Eliminate the weld on spacer. Manufacture a new bracket with a double offset bend and a curve to allow proper belt tension.
    NOTE: I would use a thin metal prototype to assure proper function before manufacturing the NEW bracket from a heavier stock. Except for the useless bracket provided, the kit is definitely a FIVE STAR.
    PS: Might want to include a ROADMASTER 690 Single Park Light Diode.

    Michel Dastous
    Alt conversion

    Still rebuilding motor. Will give review after installed and running. Thanks

    clay copeland
    12 Volt conversion made EASY!

    I expected the conversion to be more difficult. It was very easy and I have had no issues. Thank you for getting it right the first time!

    Patrick Zimmerman

    great product

    Dennis Piacentine
    Easy to install Alternator Conversion Kit

    We installed it today, it was an easy install. The mounting bracket is very well made and I am sure it will last forever. The adjustment arm was also well made and installed easily. My only suggestion is a small diagram of how to install it, so we didn't need to think so much, haha.