BT5-4709 Compressor – Sanden SD7H15HD 12V R134a, 125mm 2-Groove Clutch, KG Head

Description

The BT5-4709 Sanden compressor is built on the proven SD7H15HD heavy-duty platform, engineered for trucks, agricultural equipment, buses, and industrial vehicles where durability and consistent belt performance are required.

This unit operates on 12V electrical systems, uses R134a refrigerant, and is equipped with a 125mm dual-groove clutch designed for two 1/2″ belts, making it ideal for applications converting from older HT6 compressor designs. The KG head uses male insert O-ring #8 and #10 fittings with horizontal port orientation, simplifying hose routing and serviceability.

An ear-mount long housing, long keyed shaft, and single-wire Packard electrical connector with diode protection allow this compressor to serve as a direct replacement across a wide range of OEM and aftermarket references.

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Key Features

• Sanden SD7H15HD heavy-duty compressor platform

• 12V operation with R134a refrigerant

• 125mm 2-groove clutch for dual 1/2″ belt drives

• KG head with male insert O-ring #8 & #10 fittings

• HT6 replacement configuration

• Ear 8 long mounting for heavy-duty installations

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Essential Specifications

• BTRAC SKU: BT5-4709

• Compressor Model: SD7H15HD

• Voltage: 12V

• Refrigerant Type: R134a

• Mounting Type: Ear 8 Long

• Clutch Diameter: 125mm

• Number of Grooves: 2

• Belt Type: Two 1/2″ belts

• Cylinders: 7

• Displacement: 9.5 cu.in.

• Factory Oil Charge: 135cc

• Oil Type: PAG100

• Rotation: CW

• Shaft Type: Long Key Shaft

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Head, Ports & Electrical

• Head Type: KG

• Fitting Port Position: Horizontal

• Fitting Style: Male Insert O-Ring #8 & #10

• O-Ring #1: 0013

• O-Ring #2: 0015

• Wire Type: 1-Wire Male Packard #12015791

• Diode Protection: Yes

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Replacement Components

• Replacement Clutch Assembly: 5066

• Replacement Head Assembly: 5638G

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OEM, Interchange & Cross-Reference Numbers

Primary Interchange Numbers

• 4709

• 5412

• 20-09979

• 22-59343-000

• 75R81552

• 78553

• 78557

• ABP N83 304883

• ACC2634

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Cross References

• Sanden: 4536, 4709, 6630, 6676

• MEI / AirSource: 5412, 5730

• CoolStar: 330-1634

• Elgin: 1061001

• Freightliner: 22-59343-000

• Kysor: 1401333

• Omega: 20-09979, 20-10018

• Texas Truck AC: 300-4464

• Truck Air: 03-3440, 14671

• Red Dot (Aftermarket): 75R81552, 75R8332

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Applications

• Heavy-duty trucks

• Agricultural equipment

• Bus and fleet HVAC systems

• HT6 replacement applications

• Mobile HVAC systems using 12V R134a platforms