MSD Atomic 27621 4-Feet Extension Harness for Transmission Control Module to Handheld

Extension harness from your TCM to Handheld, 4 Feet Length

PART# 27621

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$77.72   Suggested Retail
$69.95   Your Price
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In case the harness that comes with the TCM Handheld is not long enough, the 4 Feet Extension Harness should give you the necessary slack to extend and mount the handheld in the desired location on your dashboard.


  • 4 Feet in length
  • Firm lock in tab to ensure connection

Product Attributes

Emission Code5
Product TypeTransmission Control Harnesses
Part Number27621



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.