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.
