Holley EFI - Crank/Cam Ign. Harness. Fully terminated harness. 558-431

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• Professional Installation Recommended
  These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions.
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  While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.