Air Brake Compressor Replacement for ISX15 QSX15 Trucks 2010-2024, 12V Heavy Duty One Cylinder Gear Drive, Replaces OEM 3689649 Series, Brings Back Solid Air Pressure and Kicks Those Low Warning Alerts, Fits 85mm Bore

12V Heavy-Duty Air Brake Compressor for ISX15/QSX15
✔️ 12V single-cylinder, gear-drive bolt-on replacement for OEM 3689649

Designed as a direct bolt-on replacement for Cummins ISX15 and QSX15 engines (2010-2024), this 12V air brake compressor delivers consistent air pressure to the braking system and auxiliaries in Class 8 trucks such as Freightliner Cascadia, Peterbilt 579/389, Kenworth T680/T880, and Western Star models.

✅ Weight: 65 lbs (29.48 kg)
✅ Dimensions: 17" x 15" x 10" (431.8 mm x 381 mm x 254 mm)
✅ Voltage: 12V
✅ Max operating pressure: 10.0 bar (145 psi)
✅ Operating speed: 3000 RPM
✅ OEM replacements: 3689649, 3689649RX, 3689649NX, 4059377, 4059378, 1832643, 1832644

💡 What is a heavy-duty air brake compressor used for in commercial trucks?

A handy overview of its role in daily braking systems. - heavy-duty air brake compressor maintains steady 12V air pressure for braking systems - reduces risk of low-pressure warnings and brake drag in Class 8 trucks - quick bolt-on replacement minimizes downtime and service costs ✝️