Need help? We're here!
(888) 312-8812 Login SignupThe Mack Engine Wiring Harness is the pulse of your truck’s electrical system, connecting vital components with precision and durability. It ensures that power flows seamlessly throughout the engine, keeping all parts operating in harmony. Made to endure the toughest conditions, this harness is designed to resist wear and tear from constant vibrations and high temperatures, giving your truck the longevity it deserves. With the Mack 21401712 in place, you can trust that your vehicle’s electrical system will continue running with no issues, even on the longest and most grueling journeys. It’s about making sure your truck is always in peak condition, no matter what you throw at it.
This harness is custom-built for your vehicle, so we need to make sure we get it right the first time!
Before you order:
Important:
This is a custom, made-to-order item and is NON-RETURNABLE. Confirming the details with us first will help you avoid any delays or issues.
California residents see

