Remanufactured Cummins N14 14.0L (855 ci) Engine For Sale
1988–2000 — 310–525 hp | 1,250–1,650 lb-ft
The Cummins N14 is widely regarded as one of the greatest diesel engines ever built. Introduced in 1988 as a successor to the legendary Big Cam NTC-400, the N14 combined the proven 855 cubic inch disp...
Starting from $7,000 – $13,000 — 1-Year Unlimited Mileage Warranty
Cummins N14 Technical Specifications
About the Cummins N14 Engine
The Cummins N14 is widely regarded as one of the greatest diesel engines ever built. Introduced in 1988 as a successor to the legendary Big Cam NTC-400, the N14 combined the proven 855 cubic inch displacement with modern fuel injection technology. The N14 was available in three injection variants: the fully mechanical PT pump (1988-1991), the Celect electronic injection (1991-1996), and the Celect Plus (1996-2000). The N14 earned its legendary status through extraordinary durability — many N14 engines have exceeded 1,000,000 miles on the original block and crankshaft. Its pre-emissions design means no EGR, no DPF, and no DEF, making it the simplest and most maintenance-friendly heavy-duty diesel available. The N14 was discontinued in 2000 when the ISX took over, but demand for remanufactured N14 engines remains extremely strong among owner-operators who value simplicity and reliability above all else.
Cummins N14 Strengths
- Legendary million-mile durability — one of the most reliable diesels ever made
- No EGR, no DPF, no DEF — simplest emissions system possible
- Mechanical PT pump version (1988-1991) requires no electronics to run
- Massive aftermarket support and parts availability
- Simple, robust design that any diesel mechanic can work on
- Strong resale value due to high demand from owner-operators
Common Cummins N14 Issues (Addressed in Our Remanufactured Engines)
- Injector O-ring leaks on high-mileage engines cause fuel dilution
- Overhead adjustment required at regular intervals (more frequent than modern engines)
- Wet sleeve cavitation can erode cylinder liners if coolant is not properly maintained
- Oil consumption increases at high mileage due to ring wear
- PT pump calibration drift on mechanical versions requires periodic adjustment
- Thermostat housing gasket leaks are common on high-mileage engines
Vehicles with the Cummins N14
Available Cummins N14 Remanufactured Engines
Cummins N14 Buying Guide
When purchasing a remanufactured Cummins N14, determine which injection system you need: PT pump (mechanical, 1988-1991), Celect (1991-1996), or Celect Plus (1996-2000). The mechanical PT pump version is the most sought-after for its simplicity but is also the oldest. A quality remanufactured N14 should include new cylinder liners, pistons, rings, bearings, and injectors. Verify that the block has been magnafluxed and the crankshaft has been checked for straightness. The N14 is identified by the CPL (Control Parts List) number on the dataplate.
Frequently Asked Questions — Cummins N14
How much does a remanufactured Cummins N14 engine cost?
A remanufactured Cummins N14 14.0L engine typically costs between $13,500 and $15,000 depending on the injection system (PT pump, Celect, or Celect Plus) and horsepower rating. Mechanical PT pump versions command a premium due to their simplicity and high demand. All our N14 engines are fully tested and backed by our comprehensive warranty. Call (631) 991-7700 for an exact quote.
Is the Cummins N14 a good engine?
The Cummins N14 is widely considered one of the greatest diesel engines ever built. Its reputation for million-mile durability, combined with a pre-emissions design (no EGR, DPF, or DEF), makes it the most sought-after heavy-duty diesel among owner-operators. Many N14 engines have exceeded 1,000,000 miles on the original block.
Why was the Cummins N14 discontinued?
The N14 was discontinued in 2000 because it could not meet the EPA's 2002 emissions standards without significant modifications. Cummins developed the ISX as its replacement, incorporating EGR and other emissions technology. Despite being out of production for over 25 years, demand for remanufactured N14 engines remains extremely strong.
What trucks use the Cummins N14?
The Cummins N14 was installed in virtually every major Class 8 truck brand from 1988-2000, including Peterbilt 379/378/357, Kenworth W900/T800/T600, Freightliner FLD120/Classic, International 9400/9300, Western Star 4900, and Mack CH Series. It was the dominant heavy-duty diesel engine of the 1990s.
How many miles can a Cummins N14 last?
The Cummins N14 is famous for its million-mile capability. With proper maintenance — regular oil changes, coolant system service, and timely overhead adjustments — many N14 engines have exceeded 1,000,000 miles on the original block and crankshaft. Some have reached 1,500,000+ miles before requiring a major overhaul.
What is the difference between N14 Celect and Celect Plus?
The N14 Celect (1991-1996) was the first electronically controlled version, using Cummins' Celect injection system for better fuel economy and diagnostics. The Celect Plus (1996-2000) added improved electronics, better fuel economy, and enhanced diagnostic capabilities. The mechanical PT pump version (1988-1991) has no electronics at all. All three share the same basic engine block and internal components.
Cummins Troubleshooting Guides
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Complete pricing for remanufactured Cummins engines by model.
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Read Guide →Installation Guide
Step-by-step guide for installing your remanufactured Cummins engine.
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