Brass DEF Coolant & Sleeper Heater Tee Fitting - M27x2.0 x 3/8in Bead x M27x2.0 for PACCAR MX-11 MX-13 - Replaces Paccar V38-6040 177.8846M27

The DEF coolant line and the sleeper heater leg share a junction on a modern PACCAR, and the tee that splits them is a part nobody thinks about until it is weeping. This Brass Tee Fitting distributed by FleetPro Parts & Tires is the DEF coolant and sleeper heater tee for EPA 2017 and later PACCAR MX-11 and MX-13 engines, in the factory female M27x2.0 x 3/8in bead x male M27x2.0 arrangement. A cracked tee here drips coolant onto the frame and starves both the DEF coolant circuit and the sleeper heater that shares it - which on a winter night means a cold bunk and a fault code. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.

One Tee, Two Circuits: The PACCAR MX DEF Coolant Tee Advantage

This is a brass tee with three different ends, and all three matter: a female M27x2.0 port, a 3/8in bead hose leg and a male M27x2.0 thread. That combination is what lets a single fitting pick up the DEF coolant line and the sleeper heater leg off the same junction with no adapters, on EPA 2017 and later PACCAR MX-11 and MX-13 engines in Kenworth and Peterbilt trucks.

The bead leg gives the hose clamp a shoulder to hold behind so the line stays put through heat cycles, and brass shrugs off coolant, road salt and the temperature swings that split cheaper bodies. Match the fitting to the engine emissions era before you order - this is the EPA 2017 and later arrangement. This Automann tee is a direct replacement for the highly searched industry number Paccar V38-6040.

Vehicle Fitment & Compatibility

This brass tee fitting is intended for the following commercial applications:

• Make/Model: Kenworth and Peterbilt
• Engine: PACCAR MX-11 and MX-13, EPA 2017 and later
• System: DEF coolant and sleeper heater lines
• Connections: Female M27x2.0 x 3/8in bead x male M27x2.0
• Component Group: Air Brake & Wheel / Air System Manifolds & Valves

Direct Replacement & Cross-Reference Numbers:

This Automann tee fitting serves as a direct replacement for the following part numbers:

• Paccar Interchange: V38-6040, V386040
• Automann Distributor #: 177.8846M27

Technical Specifications

• Component Type: Tee fitting, DEF coolant and sleeper heater
• Connections: Female M27x2.0 x 3/8in bead x male M27x2.0
• Material: Brass
• Engine: PACCAR MX-11 / MX-13, EPA 2017 and later
• Application: Kenworth, Peterbilt
• UPC: 889626693762
• Product Level: Fleet Standard Aftermarket
• Brand: Automann (Distributed by FleetPro Parts & Tires)