Excel EM36820 Mack 745-279180 Relay Valve

Relay Valve R6 (4) 3/8in Delivery Ports (1) 3/8in Supply Port (1) 1/4in Service Port

• Part number: EM36820
• OE MFG: MACK
• OEM Reference: 745-279180
• Cross Reference: MACK : 745-279180; NAVISTAR : 3205416R91; OTHER : FN18011 | PAI : 3682
• Product Class: Air Valves & Kits

The PAI EM36820 is a Relay Valve R6 identified for the Mack OEM reference 745-279180. Its configuration includes four 3/8-inch delivery ports, one 3/8-inch supply port, and one 1/4-inch service port, details that help match the valve to the required air-line connections. Relay valves are heavy duty diesel truck parts that use a control signal to route compressed air through a vehicle air-brake system, supporting rapid delivery to brake actuators. Additional cross-references include Navistar 3205416R91 and FN18011.