2593977C91 - Genuine International Wiring Harness, DPF Sensor - 1 - wisentpartscenter.com

Description

International 2593977C91 DPF Sensor Wiring Harness - Genuine International Aftertreatment Harness

The International 2593977C91 is a genuine wiring harness for the DPF sensors on the exhaust aftertreatment system. It connects the pressure and temperature sensors on the DPF back to the engine controls.
Key Functions:

- Connects the DPF pressure and temperature sensors to the engine controls
- Routed for the aftertreatment section

Fitment & Specifications:

- International DT466, MaxxForce EGR
- 4000 and 7000 series trucks, IC buses

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

Purpose of the Part

The engine controls rely on the DPF sensors to know soot load and exhaust temperature and decide when to regen. This harness carries those signals. When it chafes or corrodes, the sensor readings drop out and the system sets faults even though the sensors are fine.

Issue Symptoms / When to Replace

Intermittent DPF sensor faults, sensor readings dropping out, regen problems, and codes that come and go with vibration or heat. Since the harness runs near the exhaust, look for melted insulation, chafed spots and corroded pins before blaming the sensors.

Brand Information

International is part of Navistar and builds these harnesses to fit the DT466 and MaxxForce aftertreatment exactly, with the right connectors and routing. A genuine harness plugs straight in and holds up to the heat and vibration near the exhaust, which is where cheaper harnesses tend to fail.

Installation Notes

1. Disconnect the batteries.
2. Note the routing of the old harness before removing it.
3. Route the new one the same way, clear of the exhaust, and secure it at the same clip points.
4. Make sure each connector is clean and locks fully.
5. Clear codes and confirm the sensors read before returning it to service.

How to Identify an OEM Part

A genuine harness has an International label wrapped around it showing the International diamond logo, ONE HARNESS, the part number and ASSEMBLED IN USA.

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.