wp20555 - Genuine International HVAC Control Unit - 1 - wisentpartscenter.com

Description

Genuine International 4065331C1 HVAC Control Unit is the cab-mounted heater and air-conditioning control used to manage temperature, blower speed, and airflow mode. International catalogs this control family as “CONTROL, HEATER, AND A/C - HORIZON.”

Key Functions

- Adjusts cab heating and cooling temperature.
- Controls HVAC blower/fan speed.
- Selects vent, floor, and defrost airflow modes.
- Provides the driver interface for cab heater and A/C operation.

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

Purpose of the Part

The 4065331C1 provides driver control of the cab HVAC system, sending the requested temperature, fan-speed, and airflow-mode settings to the heating and air-conditioning system.

Issue Symptoms / When to Replace

- Heater or A/C controls do not respond.
- Blower speed cannot be changed from the control panel.
- Temperature adjustment responds incorrectly or intermittently.
- Airflow remains stuck in one vent or defrost mode.
- Control functions operate intermittently.

HVAC actuators, blower circuits, wiring, and other system components can produce similar symptoms, so control-unit failure should be verified before replacement.

Brand Information

International is based in Lisle, Illinois and manufactures International commercial trucks and engines as well as IC Bus school and commercial buses. The company is a major North American manufacturer of Class 4–8 commercial vehicles, and its truck cab systems use dedicated HVAC controls for heating, air conditioning, airflow, and temperature management.

Installation Notes

Plug and play. Match the connector and control-panel configuration to the original unit.

How to Identify an OEM Part

Check for the International/Navistar OE label and part number

Why Buy 4065331C1 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

Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.