BT4-0121 A/C Accumulator – Heavy-Duty Mobile HVAC

Description

The BTRAC BT4-0121 A/C Accumulator plays a key role in protecting mobile air conditioning systems. It separates liquid refrigerant from vapor before the flow returns to the compressor. At the same time, it traps moisture and debris that can cause internal damage. As a result, the system runs more smoothly and components last longer.

In mobile and light-duty applications, A/C systems experience frequent cycling and changing load conditions. Because of this, proper refrigerant control becomes critical. Therefore, the BT4-0121 helps prevent liquid slugging, reduce internal wear, and support stable cooling performance.

This accumulator crosses directly to ATCO Products part number 7-5232, which is identified in the ATCO catalog as an application-matched replacement. Since ATCO does not publish detailed physical specifications for this part, technicians should select this unit based on confirmed application or interchange, not dimensional comparison.

Accumulators should always be replaced whenever the A/C system is opened or when major components are serviced. In addition, replacing the accumulator after compressor failure helps restore proper moisture control and long-term system reliability.

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Key Features

• Heavy-duty A/C accumulator for mobile HVAC systems

• Separates liquid refrigerant from vapor

• Helps capture moisture and contaminants

• Protects compressors from liquid slugging

• Supports stable refrigerant flow

• Compatible with R-134a refrigerant

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Specifications

• BTRAC Part Number: BT4-0121

• Component Type: A/C accumulator

• Refrigerant Compatibility: R-134a

• Application Type: Mobile / heavy-duty HVAC systems

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OEM / Application Notes

Based on confirmed interchange data, the BT4-0121 A/C accumulator is commonly used as a service replacement in:

• Mobile air conditioning systems

• Light-duty and vocational equipment

• Fleet and specialty vehicle HVAC systems

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

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Interchange Numbers

ATCO Products 7-5232