Electric Choke Conv. Kit w/Internal Vacuum Source

The Holley Electric Choke Conversion Kit with Internal Vacuum Source (SKU HLY45-223SA) transforms manual or hot-air choke carburetors into reliable electric-choke systems, eliminating cold-start tuning headaches on classic engines and vintage military vehicles. Built for Holley 2300 and 4160 carburetors, this conversion kit serves enthusiasts, mechanics, and field operators who demand repeatable cold-weather performance without the complexity of traditional vacuum or manual systems. The internal vacuum source design simplifies installation by consolidating choke actuation into a single, self-contained module.

This electric choke conversion operates by supplying controlled heat and vacuum pressure to a bimetallic spring element, progressively enriching the fuel mixture during engine startup and warming. The internal vacuum source eliminates dependency on manifold or external pump-based vacuum—critical in high-vibration or unpredictable field environments where vacuum lines fail or become unreliable. Complete wiring and hardware are included, enabling technicians to retrofit without sourcing ancillary components. The lightweight design (0.6 lbs) and compact footprint (5.4 x 3 x 5.4 inches) fit standard engine bays without modification, ensuring quick swap-outs during maintenance or field repairs.

Carburetor technicians, vintage truck builders, and operators of military surplus vehicles benefit most from this kit's seamless integration and reliability. Compatible with Holley 2300 and 4160 carburetors commonly found in 1960s–1980s American trucks, Jeeps, and generator sets, the Electric Choke Conversion Kit removes guesswork from cold starts in sub-freezing conditions. Installation requires basic electrical knowledge and standard hand tools; all necessary fasteners and wiring connectors ship with the unit.