71R8400 Red Dot Bulbless Block Type Expansion Valve – Schrader Port, 2 Ton

The Red Dot 71R8400 Bulbless Block Type Expansion Valve is a high-capacity TXV designed for mobile HVAC systems that require a block-mounted, bulbless expansion valve with service access. This model features an integrated 7/16-inch Schrader port, allowing pressure diagnostics and service without disturbing the refrigerant circuit.

The 71R8400 is commonly used on A/C Industries / Carrier units (OE# 210-035) and supports 2-ton cooling capacity, making it suitable for heavy-duty on-highway trucks and agricultural equipment. With female O-ring connections, a 5°F superheat rating, and a defined pressure limit, it provides reliable refrigerant control in demanding mobile applications.

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

On-Road & Equipment Applications

• Kenworth:

  • C500, T400, T600, T800, W900 (1986–1994)

• Ford / New Holland:

  • Combines: TR86, TR89, TR96, TR97, TR98, TR99 (OE# 847015)

  • Harvesters / Balewagons: 1915, 2115 (OE# 847015)

  • Swathers / Windrowers: 1118, 2450, 2550 (OE# 847015)

• Carrier / A/C Industries:

  • OE Reference: 210-035

Product Specifications

• Part Type: A/C Expansion Valve

• Valve Style: Bulbless Block Type

• Special Feature: 7/16 in. Schrader Port

• Rated Capacity: 2 Ton (High-Capacity)

• Red Dot Part No.: 71R8400

• Red Dot Factory No.: RD-5-7155-0P

• Superheat Rating: 5°F

• Pressure Limit: 50 psig @ 85°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:

• Carrier / A/C Industries: 210-035

• Navistar: 1676665C91

• Mack: 4379-RD571550

• PACCAR: 589500BSM, 58950P, D2953-5363

• Volvo: 3949396, RDHRD571550P

Aftermarket / Interchange:

• Texas Truck AC: 450-6502, 450-6502A

• AirSource / MEI: 1604

• Alliance: ABP N83 308001, ABP N83 308191

• Bergstrom: 589500

• Climatech: EA1090, EA1265, UC1060, EA10900

• CoolCab: 932116

• CoolStar / MEI: 520-1015

• DTAC: 04-15009

• Euclid: E-805027

• Fleetrite: ZGG14700

• Four Seasons: 38879

• Kysor: 1899010 (404264 old)

• Motivaire: 36526

• Murray: 207351

• Omega: 31-30912, 31-30912-AM

• Parker: 040138-114, 040138-132, 329-447

• Primatech: PTAC1604

• Roadforce: RF9595895821

• Trans Air: 210035, 12-3023, 12-3023A

• TruckAC+: T3505

• TTA/C: 16-7002

• Red Dot Aftermarket: 71R8400

Additional Interchange References:
12-3023A, 1604, 1676665C91, 1899010, 232-8563, 329-470, 404146, 4379-RD571550P, EV01015, RDHRD571550P, RDT71R8400

(Always verify Schrader port requirement, tonnage rating, and O-ring sizes prior to installation.)