Is this wire harness compatible with the JACK system?
PolarStar Wire Harness 7.5 for JACK, F1, F2, Fusion Engine
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Open Dec 10, 2025 - 09:25 AM
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Answer
Dec 10, 2025 - 09:25 AM
Yes, this polarstar wire harness is designed to work with the JACK system. The JACK is an HPA engine from PolarStar, and using the correct harness maintains proper electrical connectivity and system reliability for your airsoft build.
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PolarStar Wire Harness 7.5 for JACK, F1, F2, Fusion Engine
This wire harness is for the PolarStar Fusion Engine, JACK, F1, and F2. This will replace your existing damaged wire harness. The 7.5" wire harness comes standard on the V3/M249 version of the Jack, F1, and F2. This also works great if you just simply need a shorter harness for your specific HP...
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