🔧 Cummins Celect Plus ECM (3408300 / 3408300RX /3408300-RX) – N14 & M11 Engines
Reliable, plug-and-play replacement ECM for Cummins N14 and M11 Celect Plus engines. Fully tested, programmed to your engine, and ready to install.
💰 Price & Core Deposit
$1695 + $600 Refundable Core Deposit = $2295
- Core deposit refunded when your old ECM is returned in repairable condition
- No core? Call us for options
🔁 Compatible / Interchangeable Part Numbers
3408300, 3408300RX, 3408300-RX, 3408303, 3408303RX, 3408303-RX, 3096662, 3096662RX, 3096662-RX
👉 Any of these part numbers may be shipped depending on current inventory.
All are fully compatible and interchangeable for Cummins Celect Plus applications.
⚙️ What You Get
- ✅ Remanufactured in the USA
- ✅ Fully tested & quality checked
- ✅ Programmed to your Engine Serial Number (ESN)
- ✅ Plug-and-play installation
- ✅ 1-Year Unlimited Mileage Warranty on ECM only
- ✅ Tech support before & after sale
🧠 Custom Programming (Included in Price)
We tailor your ECM to your truck setup for maximum performance and reliability.
You’ll be asked:
- Engine Serial Number (ESN)
- Desired horsepower (or we recommend options)
- Max horsepower & torque within Cummins specs
- Tire size
- Rear axle ratio
- Idle RPM bump preferences (ex: 1000 / 1200 RPM)
- Transmission type (manual / automatic / top 2)
- Max road speed (up to 99 MPH)
- Engine Fan switch on dash
- Cruise control max speed
👉 Not sure? We’ll walk you through it.
🚚 Shipping
- $35 UPS Ground
- $90 Next Day Air
- Ships in ~1 business day
⚠️ Common ECM Failure Symptoms
If you're experiencing any of these, your ECM may be failing:
- No start / hard start
- Random shutdowns
- Loss of power or engine derate
- No communication with diagnostic tools
- Fault codes that won’t clear
- Injector fault codes keep changing after injector replaced
- Injector or performance issues
💡 Why Replace Your ECM?
- Prevent costly breakdowns & downtime
- Restore full engine power & fuel efficiency
- Fix electrical and communication issues
- Avoid misdiagnosing injectors or wiring
- Makes a good spare ecm for testing at a mechanic's
🔧 Recommended While Replacing ECM
1. Fuel Solenoid
Replacing helps prevent future ECM damage.
2. ECM Connector O-Rings
- Keeps moisture out
- Allows inspection of connectors
- Prevents future electrical issues
⚠️ Check for cracked or damaged connectors—very common.
🔌 Available Add-On Parts (Limited Availability)
We still stock hard-to-find / obsolete ecm connector parts:
- HDP3162750 – Port A (Sensor Harness)
- HDP3162751 – Port B (OEM Harness)
- HDP3162752 – Port C (Injector Harness w/ fuses)
👉 These are no longer manufactured and limited stock available
We also carry:
- Engine harnesses (OEM & aftermarket)
🌎 Ordering & Support
📞 Call or Text: 727-494-5514
📱 WhatsApp Available 727-494-5514
👉 We take orders over the phone to ensure everything is programmed correctly.
🌍 International Shipping
Yes, we ship worldwide:
- UPS for USA and Canada / UPS or USPS for other countries
- Or for wiring harnesses, send us your FedEx label and schedule a pickup call for details: 727-494-5514
🛡️ Warranty
1-Year Unlimited Mileage Warranty
(Covers ECM only – call for full details)
🔄 Return Policy
- 7-day return window
- $300 restocking fee
- Shipping not refunded
📞 Call us first—we’ll help troubleshoot if needed.
🏢 About Us – Heavy Duty Powertrain, Inc.
- 20+ years experience with Cummins N14 & M11 ECMs
- Serving customers since 2007
- Open 7 days a week (9am–9pm EST)
- Located in Davison, MI
👉 If we miss your call, we WILL call you back
(Text is best if your number got flagged by the phone company as spam)