wp20531 - Genuine Cummins Wiring Harness - 1 - wisentpartscenter.com

Description

Cummins 4394324 Wiring Harness - Genuine Cummins Aftertreatment Wiring Harness

The Cummins 4394324 is a genuine Cummins wiring harness for the aftertreatment system. It ties the emissions-system components into the truck-side ECM harness - the connection path that lets the engine controls talk to the aftertreatment hardware.

Verify fitment with us before ordering to ensure the correct part for your application.

Purpose of the Part

It's the wiring link between the aftertreatment system and the engine controls. The emissions components report and take commands through this harness back to the ECM side.

Issue Symptoms / When to Replace

- Aftertreatment / SCR fault codes from open or short circuits
- Sensor or dosing components dropping out intermittently
- Melted, chafed, or corroded wiring near the exhaust
- Derate from unresolved emissions faults

Brand Information

A genuine Cummins 4394324 is built with the correct connectors and high-temp routing for the aftertreatment environment, so the emissions system stays connected to the ECM the way it should.

Installation Notes

Route it on the factory path and secure it clear of exhaust heat and sharp edges.

How to Identify an OEM Part

Genuine units carry a label/tag with the Cummins part number.

Why buy from Wisent Parts
  • ⏱️
    Fast shipping
    Orders before 12PM EST ship same business day.
  • 🛡️
    180-day warranty
    All parts covered from delivery date.
  • ↩️
    Easy returns
    30-day returns.
  • ✅
    Verify fitment
    Send VIN/ESN and we’ll confirm.

Shop with confidence

Warranty & Return Information
Warranty Information

Wisent Parts offers a 180-day warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

All electrical parts and final sale items are non-refundable and cannot be returned. Please double-check compatibility before purchase. If you have questions, our support team is here to help before you place your order.