Product Description
284862 Cummins/Holset Air Brake Compressor
The 284862 Cummins/Holset Air Brake Compressor is a heavy-duty engine-driven compressor designed to supply compressed air to the vehicle’s air brake system and other air-operated components. Built for demanding commercial truck applications, this compressor provides dependable air delivery for maintaining proper brake system pressure during normal operation.
This compressor is commonly associated with Mack trucks equipped with E6 and E7 diesel engines. It is based on the Cummins/Holset SS296 compressor design, which has been widely used in heavy-duty truck applications.
Product Features
- Heavy-duty Cummins/Holset-style air brake compressor
- SS296 compressor configuration
- Engine-driven design for dependable air delivery
- Designed to maintain air pressure for commercial vehicle braking systems
- Suitable for select Mack E6 and E7 engine applications
- Built for heavy-duty truck operating conditions
Common Applications
The 284862 compressor may be used on select:
- Mack trucks
- Mack E6 diesel engines
- Mack E7 diesel engines
- Heavy-duty commercial vehicles using the Cummins/Holset SS296 compressor configuration
Reliable Air System Performance
The air compressor is an essential part of a heavy-duty vehicle’s braking system. It draws in and compresses air before sending it to the vehicle’s air reservoirs. The stored air is then available to operate the service brakes, parking brakes and other air-powered accessories.
A worn or damaged compressor can result in slow air pressure buildup, excessive oil entering the air system, unusual compressor noise or difficulty maintaining normal operating pressure. Replacing a failing compressor helps restore reliable air delivery and supports safe, consistent brake system performance.
Important Installation Information
Air compressors that appear similar may have important differences in mounting configuration, drive design, cylinder head arrangement, air inlet location, discharge port position, coolant connections and unloader configuration. Please compare your original compressor carefully before ordering.
Before purchasing, verify the part number, mounting flange, drive arrangement and port locations against the compressor currently installed on your engine. Vehicle year, make and engine model alone may not be sufficient to confirm compatibility.
Professional installation is recommended. The vehicle’s air intake line, discharge line, coolant lines, oil supply system and compressor mounting components should be inspected during installation. Any contaminated or damaged lines should be cleaned or replaced to help prevent premature compressor failure.
Part Number: 284862
Compressor Type: Cummins/Holset SS296 Style
Application: Select Mack E6 and E7 Engine Applications
Not sure whether this compressor fits your vehicle? Please contact us with the part number from your original compressor, along with the truck year, make, model and engine information. We will be happy to help confirm the correct application.
