BT5-4308 12V Heavy-Duty A/C Compressor – SD7H15, Ear Mount, 152mm 2-Groove

Product Overview

The BT5-4308 SD7H15-style compressor is engineered for durability, consistent cooling output, and long service life in heavy-duty mobile A/C systems. It uses a proven ear-mount configuration and a 152 mm A2 2-groove clutch, making it a dependable choice for belt-driven applications requiring stable alignment and load handling.

Additionally, the compressor is optimized for R134a refrigerant, includes the correct 135 cc oil charge, and features a rear-port GV head with standard 3/4″ x 7/8″ ports. As a result, installation remains straightforward while maintaining OEM-style hose routing and electrical compatibility.

Key Features

• Heavy-duty SD7H15 compressor platform

• 12V clutch with 152 mm 2-groove pulley

• Ear mount (8 long) configuration

• Rear-ported GV cylinder head

• Horizontal port orientation

• Designed for R134a refrigerant

• Pre-oiled for installation

• 1-wire Packard connector with integrated diode

Essential Specifications

• Compressor Family: SD7H15

• Style: Heavy Duty (HD)

• Mount Type: Ear, 8 Long

• Ear ID: 83.3 mm

• Refrigerant: R134A

• Displacement: 155 cc

• Rotation Direction: Clockwise (CW)

• Oil Quantity: 135 cc

• Cylinder Head: GV

• Port Angle: Horizontal

• Port Clocking: Rear

• Head Port Style: 3/4″ x 7/8″

• Rotor Size: 152 mm

• Rotor Groove: A2

Pulley & Clutch Dimensions

• Gauge Line to First Groove: 23.80 mm

• Gauge Line to Middle Groove: 0.00 mm

• Gauge Line to End Groove: 39.55 mm

Electrical Specifications

• Coil Voltage: 12V

• Connector Type: 1-Wire Male Packard

• Connector Part Number: 12015791

• Diode: Integrated

Interchange Numbers

158577, ZGG705406, 03-3823, 1000239130, 1401429, 1410073, 20-15000, 20-15000-AM, 4308, 4308SAN, 4807, 54308, 54308G, PTAC54308

Applications

Commonly used in:

• Heavy-duty trucks

• Buses and coaches

• Off-road and construction equipment

• Specialty and vocational vehicles

Installation Notes

Always confirm belt alignment, pulley spacing, and port orientation before installation. Proper evacuation and charging procedures are required to ensure optimal system performance and compressor longevity.