- “N14 Jake brake harness”
- “M11 Jake harness”
- Cummins 3074287 Jake Brake Wiring Harness
For Cummins N14 & M11 Diesel Engines
OEM Part Number
3074287
Product Overview
OEM Cummins 3074287 Jake Brake Wiring Harness designed for Cummins N14 and M11 diesel engines. This is a direct replacement harness used for Jake Brake electrical connections and dependable engine brake performance.
Built for reliable operation and proper OEM fitment.
Compatible Engines
Shipping Information
✅ Ships within 1–2 business days
USA Shipping
International Shipping
Yes — we ship worldwide using:
- UPS USA and Canada
- USPS Mail (For other countries outside of the USA and Canada, if looking for a cheaper route and not in a hurry, this will likely be the slower carrier and takes 2 days to get to the post office.)
Customers may also arrange their own:
Important Ordering Information
⚠️ This harness must be ordered by phone or text.
To Order
📞 Call or Text: 727-494-5514
Connector Components
Individual connector components are not sold separately.
The complete harness must be replaced unless you are able to source used connector components independently.
About Heavy Duty Powertrain, Inc.
Heavy Duty Powertrain, Inc. supplies replacement parts for Cummins diesel engines with customer support available every day of the week.
We understand downtime matters and work to respond quickly to all calls and messages.
Contact Information
Phone / Text / WhatsApp
📞 727-494-5514
✉️ terrychron@gmail.com
Secure Encrypted Email
✉️ N14parts@protonmail.com
Business Hours
🕘 Open Daily
Monday – Sunday
9:00 AM – Midnight EST
Including most holidays.
If we miss your call, we will return it as soon as possible.
Important Call Notice
Calls marked as spam may be blocked automatically.
If you cannot get through:
✅ Send us a text message first
✅ We can then save your contact so future calls connect properly
Thank You
We appreciate your business and look forward to helping keep your truck on the road.
Thanks for the miles!