BT5-4420 12V Heavy-Duty A/C Compressor – SD7H15HD, Direct Mount, 8-Groove 119mm

Description

Overview

The BT5-4420 SD7H15HD compressor is engineered for 12V heavy-duty and fleet HVAC systems that rely on modern serpentine belt drives. Because of its direct long-mount design, the compressor provides rigid installation and improved stability under vibration and sustained load. At the same time, the 8-groove, 119 mm clutch supports consistent belt engagement on high-accessory diesel engines.

Additionally, this unit uses a GV-style cylinder head with rear universal O-ring FLX-7 pad fittings, which allows for flexible hose routing across multiple OEM and aftermarket platforms. As a result, it integrates easily into both new installations and replacement applications. Furthermore, clockwise rotation and a 1-wire Packard electrical interface with integrated diode protection ensure compatibility with standard heavy-duty compressor control circuits using R134a refrigerant.

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Key Features

• 12-volt heavy-duty A/C compressor for mobile HVAC systems

• SD7H15HD compressor platform for proven durability

• Direct long-mount configuration for stable installation

• 8-groove serpentine clutch for high-load belt systems

• 119 mm clutch diameter for consistent belt engagement

• GV cylinder head for flexible hose routing

• Rear universal O-ring FLX-7 pad fittings

• Clockwise rotation for standard system compatibility

• Designed for continuous mobile HVAC operation

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Compressor Specifications

General

• Compressor Family: SD7H15

• Model: SD7H15HD

• Style: Heavy Duty (HD)

• Voltage: 12V

• Refrigerant Type: R134a

• Rotation: Clockwise (CW)

• Displacement: 9.5 cu.in. (155 cc)

• Number of Cylinders: 7

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Mounting & Drive

• Mounting Style: Direct, Long

• Drive Type: Belt-driven

• Belt Type: Serpentine

• Clutch Grooves: 8

• Clutch Diameter: 119 mm

• Shaft Type: Long Key Shaft

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Head & Fittings

• Head Type: GV

• Fitting Port Position: Horizontal

• Fitting Style: Rear Universal O-Ring FLX-7 Pad

• Fitting Size: Pad M10

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Oil Specifications

• Oil Type: PAG100

• Factory Oil Charge: 200 cc

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Electrical Specifications

• System Voltage: 12V

• Wire Type: 1-Wire Male Packard

• Connector Part Number: 12015791

• Wire End: T3D / J1

• Diode Protection: Integrated

• Jumper: Bullet jumper included

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Interchange / Cross-Reference Numbers

• BTRAC: BT5-4420

• MEI: 5285

• Alliance: 304004

• Carrier: 18-00093-13, 180009313

• CoolStar: 330-2338, 330-3454

• DTAC: 01-05420

• Kysor: 1410031

• Manex: 03-00823

• Oshkosh: 3482854

• Sanden: 4310, 4420, 4800

• School Bus Manufacturers: 1888-RR3-007, 1978-RR3-001

• Trans Air: 512253

• Truck Air: 03-3708T, 03-3808T

Additional Interchange References:
1401201, 1401448, 20-14420, 240-9704, 300-5506, 402298, 4379-RD5108850, 4379-RD5108850P, 512226, 75R89302, ABP N83 304004, ACC3338, RDHRD5108850P, RDT75R89302, ZGG705139

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Typical Applications

• On-highway heavy-duty trucks

• School buses and transit vehicles

• Vocational and fleet equipment

• Multi-fit OEM and replacement mobile HVAC systems