This is a Cummins N14 engine for sale in fairly used condition: a complete 14 litre inline six diesel, inspected, run-tested and ready to ship anywhere in the world. The N14 powered Peterbilt, Kenworth, Freightliner, Western Star and International trucks from the late 1980s until around 2001, and it is still one of the most trusted engines for long haul, logging and heavy work.
We match the engine to your CPL number and version, and send photos of the actual unit before you pay.
What’s Included With This Cummins N14 Engine for Sale
- Block with crankshaft, liners, pistons and rods
- Cylinder heads with valve train
- Injectors (condition noted on your quote)
- Turbocharger to suit the rating
- Oil cooler, front cover, oil pan and flywheel housing
- Jake brake housings on most truck units
- Test results, photos and a heavy duty skid for shipping
The ECM and harness on Celect engines are not included unless agreed in writing. Long blocks are available on request.
Cummins N14 Specifications
| Engine | Cummins N14 |
| Layout | Inline six, four stroke, turbocharged |
| Displacement | 14.0 litres (855 cubic inches) |
| Bore x stroke | 140 x 152 mm (5.5 x 6.0 in) |
| Valve train | Pushrod, 4 valves per cylinder, separate cylinder heads |
| Fuel system | Mechanical PT or Celect electronic unit injectors |
| Versions | N14 Mechanical, N14 Celect, N14 Celect Plus |
| Power | About 310 to 525 hp depending on rating |
| Torque | Up to about 1,850 lb-ft on top ratings |
| Dry weight | About 2,700 to 2,900 lb |
| Years | Late 1980s to around 2001 |
Trucks and Machines This Engine Fits
Each Cummins N14 engine for sale in our stock is matched to one of these applications:
- Peterbilt 377, 378, 379 and 385
- Kenworth W900, T600 and T800
- Freightliner FLD 120, Classic and Century Class
- Western Star 4900 and 5900
- International 9000 series and some Volvo VNL builds
- Buses, fire trucks, generators, pumps and marine units
Mounts, oil pans and accessories differ, so send us your truck or machine details before ordering.
Mechanical, Celect or Celect Plus?
N14 Mechanical uses the Cummins PT fuel system with no engine computer. Simple, tough and easy to fix in the field.
N14 Celect added electronic control in the early 1990s for better economy and smoother running.
N14 Celect Plus, often called the red top, has improved electronics and higher ratings. For most buyers it is the best Cummins N14 engine for sale.
The three are wired and fuelled differently, so match the version your truck was built with, or ask us about a conversion.
How We Test Every Cummins N14 Engine for Sale
- We record the serial number, CPL and rating from the plate.
- We run a compression or cylinder cut-out test.
- We check the oil for coolant, fuel and metal.
- Where the engine runs, we check oil pressure, blow-by and smoke.
- We check the turbo for shaft play and oil leaks.
- We look at the engine brake and overhead when covers are off.
- We photograph the engine from every side, including the data plate.
You get these results with your quote. More detail is in our guide to tested used engines.
Common N14 Problems We Check For
- Worn injector o-rings and cups
- Early Celect electronics and harness faults
- Liner cavitation from poor coolant care
- Head cracks after overheating
- Oil cooler leaks mixing oil and coolant
- Jake brake wear
Buying a tested Cummins N14 engine for sale means these are checked before you pay.
Price and What Affects It
The price shown is for a fairly used, tested truck engine. The final price of your Cummins N14 engine for sale depends on:
- Version (Mechanical, Celect or Celect Plus)
- Horsepower rating and test results
- Mileage and condition
- Complete engine or long block
- Freight to your port or door
Everything is confirmed in a written quote. See our guide to replacement engine cost.
Signs Your Truck Needs a Replacement Engine
Not every fault means the engine is finished. These signs usually point to serious internal damage, and that is when owners start looking for a Cummins N14 engine for sale:
- Heavy blow-by from the breather under load
- A deep knock from the bottom end that grows with load
- Shiny metal on the oil filter or drain plug
- Milky oil or oil in the radiator
- Low oil pressure once the engine is warm
- Constant overheating with a healthy cooling system
Send us what you are seeing and we will tell you honestly whether a repair or a replacement makes more sense. If replacement is the answer, we will match a Cummins N14 engine for sale to your CPL and send the test results and photos straight away.
Replace or Rebuild Your Old Engine?
An in-frame rebuild keeps your own engine, but the truck sits while the work is done and hidden damage can raise the bill. Fitting a tested Cummins N14 engine for sale is usually faster, you know its condition before you pay, and your old engine may still be worth something as a core. If the block or crank is damaged, or the truck earns every day, replacing usually wins.
Cooling System Care
The N14 uses wet liners that sit in coolant, so coolant quality decides how long it lasts. Keep the coolant at the right strength, test the additive level at every service and change the coolant filter on time. Clean radiator fins, good thermostats and a working fan clutch stop overheating, which is how heads crack and liners lose their seal. Start your new engine with a flushed system and fresh coolant.
Worldwide Shipping
Every engine is drained, sealed, strapped to a heavy skid or crated, and shipped by sea or road freight with tracking. We ship to Africa, Europe, the Middle East, Asia, Latin America, the Caribbean and North America, and prepare the export paperwork. See our shipping policy.
Warranty and Returns
Each engine comes with a written warranty. Read our used engine warranty guide and our refund and returns policy before you order.
Installation Tips
- Flush the radiator and cooling system before fitting.
- Clean the charge air cooler if the old engine failed with oil or metal in the intake.
- Fit new filters, add fresh oil and prime the fuel system.
- On Celect engines, check the ECM settings suit your truck.
- Idle to temperature and check for leaks before the first load.
Why Buy From NJ Global Auto Parts
- We only sell engines, so we know what to look for.
- Every engine is tested and photographed before it is quoted.
- We confirm the fit from your CPL before you pay.
- You get a written quote, tracking and a written warranty.
- We ship worldwide and handle export paperwork.
Learn more about us.
Learn More Before You Buy
Our full guide to the Cummins N14 engine for sale covers reading the CPL, the engine brake, signs your engine is finished and seven checks before you pay. For background on the maker, see the Cummins page.
We also sell the Caterpillar 3406E, the Detroit Diesel Series 60 and the Volvo D13. See all Cummins engines.
Frequently Asked Questions
Is this Cummins N14 engine for sale a Celect Plus?
We stock all three versions. Tell us which you need and we will confirm.
Does it come with the ECM?
Not unless agreed in writing. Your quote will say.
Can I fit a Celect Plus where a mechanical N14 was?
Yes, with the ECM, harness and some cab wiring. Ask us first.
Do you ship to my country?
Yes, worldwide, with export paperwork handled.
How do I pay?
Bank transfer only. Details come with your written quote.
Order Your Engine
Send your CPL, serial number or truck details through our contact page or call +1 (209) 733-0882. We will confirm the fit, send photos of the actual Cummins N14 engine for sale and give you a written price with freight, usually the same day.
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