Description
3558066X - QE296M MACK AIR BRAKE COMPRESSOR - REMANUFACTURED
PART NUMBER(S):
Fleet Products: 3558066X (Remanufactured) | Replaces OE: Holset / Cummins: 3558066
DESCRIPTION:
Model: Holset QE296M Quiet Economy Mack Air Brake Compressor
Vehicles: Mack E6 / E7 engine applications in heavy trucks, semi trucks, 18 wheelers, and commercial trucks
• Compressor Family: QE Quiet Economy
• Design: Single-cylinder air brake compressor
• Mounting: Direct engine mount, Mack flange configuration
• Drive Type: Engine driven, gear drive
• Drive Configuration: Thru-drive for power steering pump
• Cooling Method: Water cooled
• Spline Shaft: 11-tooth
• Head / Cover Material: Iron head / cover
• Intake Valve Retainer: Not included
• Required Dryer Line: 065647WL-G
Applications:
Used on Mack E6 / E7 engine applications requiring a Holset QE296M Quiet Economy compressor with direct engine mounting, gear drive, thru-drive power steering pump support, 11-tooth spline shaft, iron head / cover, and no intake valve retainer. A specific 4-line air dryer 065647WL-G is required to work correctly with the QE compressor’s unloading and control requirements.
CROSS-REFERENCE(S):
3558066, 3558066X, 3558066RX, 3558068, 3558068X, 3558068RX (non-thru-drive with intake valve retainer), 065647WL-G
A cross-reference listing means this part may be a suitable replacement for the listed part numbers. Always verify fitment before installation.
IMPORTANT INSTALLATION NOTES:
✔ Verify Mack E6 / E7 fitment, QE296M model, direct engine-mount pattern, and Mack flange configuration before installation
✔ Confirm gear-drive alignment, 11-tooth spline shaft, and thru-drive power steering pump setup before startup
✔ Use required 4-line dryer 065647WL-G for QE compressor unloading and control requirements
✔ Verify water-cooling connections and clean all air, oil, coolant, and dryer control lines before installation
✔ Inspect mounting surface and ports before installation
SOLD AS REMANUFACTURED | CORE RETURN REQUIRED
Built to OEM standards | thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
Warranty Information
