71R8440 Red Dot Bulbless Block Type Expansion Valve – Plate Mount, 65.7 PSIG @ 90°F

The Red Dot 71R8440 Bulbless Block Type Expansion Valve is a plate-mount TXV designed for mobile HVAC systems that require higher pressure capability and precise refrigerant control without an external sensing bulb. Bulbless block valves regulate internally, reducing components and improving durability in high-vibration, heavy-duty environments.

This model features a 5.5°F superheat rating and a 65.7 psig pressure limit at 90°F, making it well-suited for applications with elevated head pressures. The plate/flange mounting configuration supports secure OEM installations commonly found in on-highway sleeper and vocational truck systems.

Use the specifications and interchange numbers below to confirm the correct match before ordering.

On-Road Applications

• Peterbilt:

  • Model 587 (2011–2012)

• Volvo / White GMC:

  • VN Series 420, 610, 770 (1996–2002)

Product Specifications

• Part Type: A/C Expansion Valve

• Valve Style: Bulbless Block Type

• Mounting Style: Plate / Flange Mount

• Red Dot Part No.: 71R8440

• Red Dot Factory No.: RD-5-10333-0P

• Superheat Rating: 5.5°F

• Pressure Limit: 65.7 psig @ 90°F

Connections (Plate / Flange Mount):

Hose Side

• Inlet: #6 (3/8 in.) Plate (Flange) Mount

• Outlet: #12 (3/4 in.) Plate (Flange) Mount

Evaporator Side

• Inlet: #8 (1/2 in.) Plate (Flange) Mount

• Outlet: #10 (5/8 in.) Plate (Flange) Mount

OEM & Interchange Numbers

OEM Numbers:

• Caterpillar: 232-8570

• Freightliner: RDH RD5 10333 0

• John Deere: 31211, 3501-79511, RE57575

• Mack: 4379-RD5103330

• Volvo: 3946673, BOA80-321-00-209, RDHRD5103330P

• Eaton: 929-435, 929-493B

Aftermarket / Interchange:

• Texas Truck AC: 450-6553

• AirSource / MEI: 1614

• Alliance: ABP N83 308301

• Bergstrom: 540274

• CoolStar / MEI: 520-1235

• Everco HD: 932136

• Omega: 31-30918, 31-30918-AM

• Primatech: PTAC1614

• Road Choice: EV01235

• Roadforce: RF4765402562

• TRP / Climatech: EA14150

• Truck Air / MEI: 12-3027A

• TruckAC+: T3531

• TTA/C: 16-7203

• Red Dot Aftermarket: 71R8440

Additional Interchange References:
1614, 1818002, 1899041, 38892, 4379-RD5103330P, 450-6553, 520-1235, 540274, ABP N83 308301, BOA80-321-00-209, RDHRD5103330P, RDT71R8440, ZGG709002

(Always verify plate-mount configuration, superheat rating, and pressure limit prior to installation.)