71R8405 Red Dot Bulbless Block Type Expansion Valve – Schrader Port

The Red Dot 71R8405 Bulbless Block Type Expansion Valve is a service-friendly, block-mounted TXV designed for mobile HVAC systems that require high-capacity refrigerant control with diagnostic access. This model features an integrated Schrader service port, allowing pressure checks without disconnecting lines or disturbing the refrigerant circuit.

The 71R8405 is widely used across IHC-Navistar, Peterbilt, and Caterpillar applications, including systems equipped with Red Dot A/C unit R-10004-0. With female O-ring connections, an 8°F superheat rating, and a defined pressure limit, it delivers stable evaporator performance in heavy-duty on-highway and off-highway environments.

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

On-Road & Equipment Applications

• IHC-Navistar:

  • 2000, 4000, 8000 Series (1995–2001)

  • 4700 Series (1994–1998)

  • 9200, 9300, 9400, 9600, 9700, 9800 (2000–2002)

  • ProStar, LoneStar, 4000, 7000, 8000 (2007–2010)

• Peterbilt:

  • All models (1999–2005)

• Caterpillar:

  • All series using Red Dot A/C unit R-10004-0 (OE# RD-5-10447-0)

  • 325 Series using Red Dot A/C unit R-10004-0

Product Specifications

• Part Type: A/C Expansion Valve

• Valve Style: Bulbless Block Type

• Special Feature: Integrated Schrader service port

• Red Dot Part No.: 71R8405

• Red Dot Factory No.: RD-5-10447-0P

• Superheat Rating: 8°F

• Pressure Limit: 53.5 psig @ 75°F

Connections:

Hose Side

• Inlet: #6 (3/8 in.) Female O-Ring

• Outlet: #10 (5/8 in.) Female O-Ring

Evaporator Side

• Inlet: #8 (1/2 in.) Female O-Ring

• Outlet: #8 (1/2 in.) Female O-Ring

OEM & Interchange Numbers

OEM Numbers:

• Caterpillar: 232-8564

• Freightliner: RDH RD5 10447 0

• IHC-Navistar: 2503783-C91

• Mack: 4379-RD5104470

• PACCAR: 540056BSM

• Volvo: 3949277, 85100995

Aftermarket / Interchange:

• Texas Truck AC: 450-6550, 450-6550A

• AirSource / MEI: 1609, 1609G

• Alliance: ABP N83 308021, 308261, 308271

• Bergstrom: 540044, 540255, 1000293540

• Climatech: EA1305, EA13050

• CoolCab: 932119

• CoolStar / MEI: 520-1215

• Euclid: E-805055

• Fleetrite: ZGG19276, ZGG19837

• Kysor: 1813004, 1813005 (404343 old)

• Motivaire: 27760

• Omega: 31-30954, 31-30954-AM

• Primatech: PTAC1609, PTAC1609G

• Road Choice: EV01215

• Roadforce: RF999997291

• Truck Air / MEI: 12-3024A, 12-3024G

• TruckAC+: T3528

• TTA/C: 16-7200

• Red Dot Aftermarket: 71R8405

Additional Interchange References:
1609, 1696846C1, 1696846C3, 232-8564, 2503783C91, 4379-RD5104470P, RDHRD5104470P, RDT71R8405, ZGG19276

(Always verify Schrader port requirement, fitting sizes, and pressure limits prior to installation.)