Description
CUMMINS 85MM AIR BRAKE COMPRESSOR REMANUFACTURED
PART NUMBER(S):
Fleet Products: 9111530270X (Remanufactured) | OE: Cummins 3689649, 3689649RX | WABCO 9111530270, 9111530277, 9111530280
DESCRIPTION:
Model: WABCO Single-Cylinder 35 Teeth Gear Cone-gear Air Compressor
Vehicles: Cummins ISX, QSX engine platforms (2000s-2020s)
- Bore Size: 85 mm
- Stroke: 56 mm
- Swept Volume: 318 cm³
- Thru-Drive: 13-tooth spline
- Max Operating Speed: 3000 RPM
- Compressor Type: Water-cooled, engine-lubricated
- Mounting Style: Flange
- Crankshaft Thread: M20 × 1.5
- Discharge Port: M27 × 2.0 STOR
- Governor Port: M10 × 1.0 STOR
- Water Port: 3/4"-16 STOR
- CFM Output: 7
- Lubrication: Engine oil fed
- Gear Configuration: 31 teeth (this unit)
Applications:
Designed for high-demand applications across Cummins ISX and QSX engine families. Common in linehaul, vocational, and construction trucks requiring consistent air supply for braking and auxiliary systems. Direct-fit flange-mounted compressor with water cooling and thru-drive capability for accessory operation.
NOTE: This compressor comes with a 31-tooth gear. Model 9121400520X is available with a 35-tooth gear configuration.
CROSS-REFERENCE(S):
3689649, 3689649RX, 9111530270, 9111530277, 9111530280, 911 153 027 0, 2500340001
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Always inspect or replace the discharge line from the compressor head
✔ Use OEM specification STOR fittings and sealing components
✔ Ensure proper routing of coolant lines per engine configuration
✔ Follow Cummins torque specifications and lubrication priming procedure
✔ Improper discharge routing may lead to premature compressor failure
SOLD AS REMANUFACTURED CORE RETURN REQUIRED
Built to OEM standards, fully cleaned, inspected, and tested to ensure durability and performance in demanding applications.
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Warranty Information
Reviews
1 Review
-
compressor worked great on my ISX
Once installed it built air steady and the truck held pressure the way it should. Ive run it on mixed work about 6 weeks now, mostly highway with some yard time, and no leaks or noise. Water ports matched exactly and no surprises with the oil supply either.
