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Your cart is empty.Black anodized micro switch brackets are made from lightweight billet aluminum and fit Holley 4150 and 4500 carburetors for precise activation of the micro switch. Brackets work with the standard secondary arm as well as a throttle adjustment-screw secondary arm. Each kit includes a bracket, micro switch and stainless steel hardware securing micro switch to the bracket. ALL54180 includes stainless hardware for mounting bracket to carburetor. ALL54181 mounts to an existing carb stud.
Kyle B.
Reviewed in the United States on April 11, 2025
Worked great on Holley style 4150. Had to adjust it, but works good. Comes with hardware to bolt to the carburetor also.
Camille l.
Reviewed in the United States on September 3, 2023
I didn’t like that I had to tap my carb to bolt it on .The adjustment on the switch is not long enough so u have to do some of ur own to get it to work .I wouldn’t buy it again!
Customer
Reviewed in the United States on September 19, 2022
Does it fit, sure.Does it actually contact the carb when you go WOT? SOMETIMES.....Does the adjustment help? No.Does bending the micro switch lever help? Kinda.I expect better outta something fabbed
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