Gear-Driven Air Brake Compressor for Cummins 5.9L & 8.3L Diesel Engines – 3976366 / 3969102
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- Cummins QSB5.9 — 5.9L diesel / matching gear-drive compressor
- Cummins 6CT8.3 — 8.3L diesel / matching gear-drive compressor
Important Fitment Note: Compare original compressor part numbers, gear drive, port configuration, mounting and governor arrangements. Engine displacement alone cannot establish compatibility.
Product Overview
This gear-driven air compressor generates compressed air for heavy-equipment or commercial-vehicle systems using a compatible Cummins diesel engine.
Slow pressure buildup, unusual compressor noise or oil carryover can require compressor service, but restrictions, governors and air leaks should be evaluated first.
Compare original compressor part numbers, gear drive, port configuration, mounting and governor arrangements. Engine displacement alone cannot establish compatibility.
Key Features & Performance
- Engine-Mounted Air Brake Compressor: This gear-driven air compressor generates compressed air for heavy-equipment or commercial-vehicle systems using a compatible Cummins diesel engine.
- Application & Configuration: Compare original compressor part numbers, gear drive, port configuration, mounting and governor arrangements. Engine displacement alone cannot establish compatibility.
Specifications
- Product Type: Engine-Mounted Air Brake Compressor
- Position: Engine-mounted air system
- Northline Parts SKU: NLT2S00702
- Reference Part Numbers: 3976366,3969102
Replaces / Cross-References
The following part numbers are provided for identification:
- 3976366
- 3969102
Numbers listed in different punctuation formats can describe the same number rather than separate interchanges. Compare the original component and confirm the exact application before ordering.
Installation & Fitment Notes
Compare original compressor part numbers, gear drive, port configuration, mounting and governor arrangements. Engine displacement alone cannot establish compatibility.
Inspect the original component and all mating parts before fitting the replacement. Follow the vehicle or equipment manufacturer’s installation, torque, and safety procedures.
Frequently Asked Questions
Is this an OEM part?
No. This listing is for an aftermarket replacement. Original-equipment names and numbers identify the intended application; they do not indicate OEM manufacture.
How do I confirm that this is the right part?
Compare original compressor part numbers, gear drive, port configuration, mounting and governor arrangements. Engine displacement alone cannot establish compatibility.
What does the listing include?
Only the components shown in the listing photos are confirmed. Check the photos and package details before ordering; related hardware, fluids, or seals should not be assumed included.
Part Summary
Part: Engine-Mounted Air Brake Compressor
Compatible Applications: Cummins QSB 5.9L and 6CT 8.3L diesel installations configured for the corresponding gear-driven air compressor
Position: Engine-mounted air system
OEM / Reference Numbers: 3976366,3969102
Purpose: This gear-driven air compressor generates compressed air for heavy-equipment or commercial-vehicle systems using a compatible Cummins diesel engine.
Northline Parts SKU: NLT2S00702
Keywords: Engine-Mounted Air Brake Compressor, Gear-Driven Air Brake Compressor for Cummins 5.9L & 8.3L Diesel Engines – 3976366 / 3969102, NLT2S00702, Northline Parts, 3976366, 3969102, Cummins QSB5.9, Cummins 6CT8.3