The Red Dot 71R8457 Burgundy Bulbless Block-Type Expansion Valve is designed for on-road Freightliner sleeper and cab HVAC systems, delivering stable refrigerant control without the use of an external sensing bulb. Its bulbless block construction improves durability in high-vibration environments while maintaining consistent system performance.
This model features a burgundy color code, Stat-O-Seal fittings on all ports, and is commonly used in Freightliner C112, C120, Century, Columbia, and Coronado models from 2002–2007. The valve replaces Freightliner Century Class auxiliary sleeper expansion valve assemblies and is well suited for heavy-duty, long-haul applications.
Use the specifications and interchange numbers below to confirm proper fitment before ordering.
Product Specifications
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Part Type: A/C Expansion Valve
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Valve Style: Bulbless Block-Type
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Color Code: Burgundy
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Red Dot Part No.: 71R8457
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Red Dot Factory No.: RD-5-12522-0P
OEM & Manufacturer References:
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Air Source / MEI: 1621
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Alliance: ABP N83 308117
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Freightliner: BOA93674, BOAI3674
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Mack: 4379-RD5125220
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Parker: 040138-404, 829-101
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Volvo: RDHRD5125220P
Connections (Stat-O-Seal):
Hose Side
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Inlet: #6 (3⁄8″) Stat-O-Seal
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Outlet: #10 (5⁄8″) Stat-O-Seal
Evaporator Side
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Inlet: #8 (1⁄2″) Stat-O-Seal
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Outlet: #10 (5⁄8″) Stat-O-Seal
Replacement Note:
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Replaces Freightliner Century Class auxiliary sleeper valve
OE: BOA A93674
Interchange Numbers
040138-404, 1621, 1812007, 31-31021, 4379-RD5125220, 4379-RD5125220P, 520-1415, 71R8457, ABP N83 308117, BOA93674, BOAI3674, EV01415, RDHRD5125220P, RDT71R8457
(Always verify color code, Stat-O-Seal port sizes, and OEM application prior to installation.)
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