Description
Genuine Mack OEM HVAC control panel (29RD324AM, also numbered 20992943) for the dash climate cluster on Mack CHU, CXU, CXN, and GU highway and vocational cabs. Built by Behr/Hella for Mack and distributed by PAI Industries; controls fan speed, temperature blend, mode, and AC compressor request through the cab CAN. Direct plug-in replacement.
Specifications
| Manufacturer | Mack (Genuine OEM, Behr/Hella build, PAI distribution) |
|---|---|
| Part Number | 29RD324AM |
| Part Type | HVAC / AC Control Panel |
| Vehicle Compatibility | Mack CHU, CXU, CXN, GU models |
| Function | Fan, temperature, mode, AC compressor request |
Cross References
This part replaces or is equivalent to the following part numbers:
- Mack: 20992943, 25110700, 29RD321M, 29RD324M, 85111128, 21169150
- Also known as: N5301001 (Behr internal)
Applications
This control panel fits the following trucks:
- Mack CHU 612 / 613 / 614 (2008-2018)
- Mack CXU 612 / 613 / 614 (1999-2018)
- Mack CXN highway (all years equipped with this dash cluster)
- Mack GU 712 / 713 / 813 vocational (all years equipped with this dash cluster)
Verify the existing controller part number on the rear connector label before ordering — early dash clusters used a different connector pinout.









