Holset Air Compressors

Fleet Products stocks Holset air compressors engineered for high-output performance in truck brake systems. Ideal for Cummins-powered applications, Holset compressors are built for durability, pressure efficiency, and serviceability. ALL QE MODEL COMPRESSORS REQUIRE A 4 LINE DRYER 065647WL-G EXTRA LINE BY ITSELF PART 500457.

Suffixes like D, M, and C identify the engine platform—Detroit Diesel, Mack, and Cummins—and when followed by E, they indicate an E-Type unloader configuration for that engine series. Meanwhile, prefixes such as SS (Super Single), ST (Super Twin), and QT (Quiet Economy) define the compressor family before the model number.

Model Number	Description	CFM
SS191	Single Cylinder (Midland EL-850 equivalent)	8.5 CFM
QE296	Single Cylinder	9.8 CFM
QE296/SS296	Single Cylinder (High output varient)	13.2 CFM
QE338/SS338	Single Cylinder	15 CFM
ST676	Twin Cylinder	30 CFM
ST773	Twin Cylinder	34 CFM