71R8370 Red Dot Bulbless Block-Type Expansion Valve – 1½ Ton, 80 PSIG @ 40°F

The Red Dot 71R8370 Bulbless Block-Type Expansion Valve is designed for mobile HVAC systems that require a rugged, block-mounted TXV without an external sensing bulb. Bulbless expansion valves regulate refrigerant flow internally, reducing components, simplifying installation, and improving durability in high-vibration environments.

This valve features a block mounting design with a 1/4-inch mounting hole, female tube O-ring connections, and a 1½ ton capacity rating. With a 5°F superheat setting and an 80 psig pressure limit at 40°F, the 71R8370 is commonly used in heavy-duty on-highway and vocational applications, including Freightliner, Navistar, Volvo, and related platforms.

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

Product Specifications

• Part Type: A/C Expansion Valve

• Valve Style: Bulbless Block Type

• Red Dot Part No.: 71R8370

• Red Dot Factory No.: RD-5-7567-0P

• Mounting: Bulbless block with 1/4 in. mounting hole

• Rated Capacity: 1½ Ton

• Superheat Rating: 5°F

• Pressure Limit: 80 psig @ 40°F

Connections:

Hose Side

• Inlet: #6 (3/8 in.) Female Tube O-Ring

• Outlet: #10 (5/8 in.) Female Tube O-Ring

Evaporator Side

• Inlet: #8 (1/2 in.) Female Tube O-Ring

• Outlet: #10 (5/8 in.) Female Tube O-Ring

OEM & Interchange Numbers

OEM Numbers:

• Freightliner: A06-44004-000, A06-44004-002, BOA80-321-00-079, BOA80-321-00-083, BOA80-321-00-129, BSM308061, MVA1-6289

• Navistar: 2684680-C91

• Volvo: 3918100, 3919881, 3949281, BOA80-321-00-169

• Ford New Holland: 86505794

Aftermarket / Interchange:

• Texas Truck AC: 450-6506, 450-6506A

• Alliance: ABP N83 308009, 308061, 308211, 308291, 308375

• Annex: 10344

• Climatech: EA1080, EA1085, EA1260, EA10800, EA14300

• CoolStar / MEI: 520-1040

• Euclid: E-805029, E-805063

• Fleetrite: ZGG19226, ZGG709003, ZGG709007

• Parker: 040138-136, 040138-142, 040138-146

• Primatech: PTAC1606, PTAC1606G

• Road Choice: EV01040

• Roadforce: RF4685402136

• Truck Air / MEI: 12-0615A

• TruckAC+: T3508

• TTA/C: 16-7006

• Red Dot Aftermarket: 71R8370 (also referenced as 71R8320)

Additional Interchange References:
12-0611A, 1606, 1812002, 1899006, 232-8561, 2684680C91, 38880, 404238, 4379-RD575670, 4379-RD575670P, A22-45432-000, A22-45432-001, EA13650, RDHRD575670P, RDT71R8370, ZGG16289, ZGG709023

(Always verify block configuration, O-ring sizes, superheat rating, and pressure limits prior to installation.)