Excel EM35910 Mack 20QE377 Tractor Protection Valve
Tractor Protection Valve Service/ Tractor Port 1 3/8in P.T.Service/ Trailer Port 1 1/2 P.T.Emergency Tractor Port 1 1/4in P.T.Emergency Trailer Port 1 1/2in P.T.
- Part number: EM35910
- OE MFG: MACK
- OEM Reference: 20QE377
- Cross Reference: OTHER : 0833, 20QE377
- Product Class: Air Valves & Kits
The PAI EM35910 is an Excel tractor protection valve with service, tractor, and trailer ports identified by their supplied P.T. sizes: 1 3/8-inch tractor service, 1 1/2-inch trailer service, 1 1/4-inch emergency tractor, and 1 1/2-inch emergency trailer. As heavy duty diesel truck parts, tractor protection valves manage compressed-air connections between the tractor and trailer and help isolate the trailer air system when required. The listed port sizes distinguish the valve configuration for service and emergency circuits. MACK identifies 20QE377 as the OEM reference, with 0833 provided as an additional cross-reference.
