BT5-4271 Heavy-Duty A/C Compressor – SD7H15, 24V, FL Head, Ear Mount

Description

The BT5-4271 A/C compressor is engineered for heavy-duty mobile air-conditioning systems that require consistent performance under continuous load. Because it follows the proven SD7H15 architecture, it delivers smooth operation and long service life across trucks, buses, and off-road equipment.

In addition, this compressor uses a 7-piston fixed-displacement design with approximately 154 cc (9.4 in³) per revolution. As a result, refrigerant flow remains stable even during extended duty cycles and high ambient conditions.

Furthermore, the FL head and ear-mount configuration supports straightforward installation in common heavy-duty brackets. Therefore, technicians benefit from easier fitment, improved alignment, and broad parts compatibility.

The BT5-4271 is designed for 24-volt electrical systems and R-134a refrigerant. Because of this, it integrates cleanly into fleet, vocational, and specialty equipment platforms that demand dependable HVAC performance.

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Specifications

General

• BTRAC Part Number: BT5-4271

• Compressor Family: SD7H15-Style

• Application Type: Heavy-Duty Mobile HVAC

• Refrigerant Type: R-134a

Mounting & Head

• Mount Style: Ear Mount

• Head Type: FL Head

• Rotation: Clockwise (CW)

Electrical

• Voltage: 24 V DC

Internal

• Number of Pistons: 7

• Displacement: ≈ 154 cc (9.4 in³) per revolution

• Oil Type / Capacity: PAG Oil, ~240 mL (≈ 8 fl oz)

Additional

• Max Continuous RPM: ≈ 6,000

• Approx. Weight: ~12 lb (5.4 kg)

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Applications

The BT5-4271 is used in:

• Heavy-duty trucks and buses

• Agricultural equipment

• Construction and off-highway vehicles

It is ideal for systems requiring an SD7H15-pattern, 24-volt, FL-head, ear-mount compressor with broad interchange support.

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Interchange / Cross-Reference Numbers

03-3409, 1401100, 1401336, 1401455, 1401485, 1410062, 20-10183, 232-9237, 274091, 300-5074, 300-5075, 330-1845, 405229, 4271, 4271SAN, 4379-RD570890, 4379-RD570890P, 4506, 4507, 526047, 5752A, 5774, 58666, 6627, 6661, 6665, 75R8384, 7860, 7866, 7888, 8017, 8042, 8077, 8126, 8163, 8239, ABP N83 304122, ACC2845, AT253975, E-801163, E-801164, LE12650, RDHRD570890P, RDT75R8384, ZGG19734, ZGG705175

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Installation Notes

However, for best results:

• Always flush the system

• Replace the receiver-drier

• Verify and adjust the oil charge

• Confirm mounting, belt alignment, and electrical connections

These steps help ensure long service life and optimal cooling performance.