74R3377 Inline Receiver Drier with Moisture Indicator – High-Capacity Mobile A/C

Description

The BTRAC 74R3377 Inline Receiver Drier protects mobile air conditioning systems by removing moisture and contaminants from the refrigerant circuit. As a result, it helps prevent internal corrosion, supports consistent cooling performance, and extends compressor life in demanding operating conditions.

This unit uses an inline configuration with #6 male O-ring inlet and outlet connections, allowing direct installation into common heavy-duty HVAC hose layouts. In addition, the built-in moisture indicator provides a quick visual check of desiccant condition, so technicians can easily confirm when service is required.

The cylindrical body measures 3 inches in diameter and 10 inches in overall length. Therefore, it delivers high-capacity desiccant performance, making it well suited for Western Star trucks that operate under long duty cycles. At the same time, the side-mounted pressure-relief feature adds protection during abnormal pressure events caused by heat or high system load.

Based on confirmed configuration and validated interchange usage, the 74R3377 is commonly used in Western Star® mobile HVAC applications. Because these vehicles often work in severe environments, this receiver drier helps maintain long-term A/C reliability and serviceability.

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Key Features

• Heavy-duty inline receiver drier for mobile A/C systems

• High-capacity desiccant core for improved moisture control

• #6 male O-ring inlet and outlet

• 3″ diameter × 10″ length cylindrical body

• Integrated moisture indicator for fast visual inspection

• Schrader service ports for charging and diagnostics

• Side pressure-relief port for added system protection

• Compatible with R-134a refrigerant

• Designed for Western Star® applications

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Specifications

• Part Number: 74R3377

• Receiver Type: Inline receiver drier

• Capacity: High capacity

• Body Diameter: 3 inches

• Overall Length: 10 inches

• Inlet Connection: #6 male O-ring

• Outlet Connection: #6 male O-ring

• Service Ports: Schrader ports

• Moisture Indicator: Included

• Pressure Relief: Side-mounted

• Refrigerant Compatibility: R-134a

• Application Type: Mobile / heavy-duty A/C systems

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OEM Application Notes

Based on confirmed configuration and validated interchange positioning, the 74R3377 receiver drier is commonly used in:

• Western Star® trucks

• Heavy-duty mobile HVAC systems requiring moisture indicators

• Fleet and vocational vehicles with long operating cycles

• A/C systems needing pressure-relief protection and service ports

Applications are confirmed at the system level and are intended for service identification rather than VIN-specific fitment.

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Interchange Numbers

088343-000, 1919002, 248-8250, 402266, 4379-RD5111860P, 540252, 7193, 74R3377, 800-2122, 85144643, ABP N83 319315, RD12122, RDHRD5111860P, RDT74R3377, ZGG712006