71R8321 Red Dot High Capacity A/C Expansion Valve – 1½ Ton

The Red Dot 71R8321 High Capacity A/C Expansion Valve is designed for mobile HVAC systems that require higher refrigerant flow and stable superheat control. This valve is commonly used in heavy-duty on-highway, bus, and off-highway applications where larger evaporators and higher cooling demand are present.

Featuring female O-ring connections on both the hose side and evaporator side, the 71R8321 provides a secure, leak-resistant installation. With an 8°F superheat rating and a defined pressure limit, it delivers consistent refrigerant metering to help maintain evaporator performance under varying operating conditions.

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

Product Specifications

• Part Type: A/C Expansion Valve (High Capacity)

• Red Dot Part No.: 71R8321

• Red Dot Factory Part No.: RD-5-7015-1P

• Capacity Rating: 1½ Ton

• 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: #10 (5/8 in.) Female O-Ring

• Application: Mobile A/C systems requiring high-capacity refrigerant control

OEM & Interchange Numbers

OEM Numbers:

• Freightliner: A22-45432-000, BOA80 321 00 129, BOA80 821 00 129

• Mack: 4379-RD553820, 4379-RD570150

• Volvo: 176186, 176282, 3916182, 3949397, 3949881

• Western Star: RD-5-7015-0P, RDH RD5 9513 0

• Case IH: 1990756-C1, 98370-C3

• John Deere: AH122867, AH137702

Aftermarket / Interchange:

• Texas Truck AC: 450-6501

• ACT: EXP-001

• AirSource / MEI: 1602, 1602G

• Alliance: ABP N83 308031, 308041, 308071, 308101

• Annex: 329-477

• AP Air: 903-705

• Bergstrom: 1000039682, 540021, 540128, 540174, 540275, 540276, 540317, 540320, 540345

• Climatech: EA1075, EA13150

• CoolCab: 932118, 932131

• CoolStar / MEI: 520-1030

• DTAC: 04-15004-1

• Euclid: E-805026, E-805054, E-805058, E-805602

• Everco HD: 932073

• Fleetrite: ZGG13615

• Four Seasons: 38614, 38880, 38890

• Kysor: 1899005, 1899006, 1899028 (404296 old)

• Motivaire: 21186, 32509, 36526, 44576

• Murray: 207353, 207394

• Omega: 31-30906, 31-30927-AM, 31-30939-AM, 31-30957-AM

• Parker: 040138-102, 040138-133, 329-403

• Primatech: PTAC1602, PTAC1602G

• Road Choice: EV01030

• Roadforce: RF5475402355

• Sunair: EXV-1014

• Trans Air: 201019, 210019

• Truck Air / MEI: 12-0618A, 12-2612A, 12-2612G

• TruckAC+: T3504

• TTA/C: 16-7001

• UAC: EX9403C

• Red Dot Aftermarket: 71R8321 (also referenced with 71R8325, 71R8330, 71R8360, 71R8380 families)

Additional Interchange References:
040138-102, 1602, 176186, 176282, 1990756C1, 1990756C2, 20-210019, 232-8558, 329-413, 3902334M91, 4379-RD570151P, RDHRD570150P, RDHRD570151P, RDT71R8321

(Always verify fitting sizes, superheat rating, and pressure limits prior to installation.)