2001 Peterbilt 378 N14 14.0 Cummins Remanufactured Long Block Engine
DIESEL • Dyno Tested • Warranty Included

About This Cummins N14 Remanufactured Long Block
Looking for a quality remanufactured long block engine for your 2001 Peterbilt 378? US Engine Production offers premium remanufactured Cummins N14 long block engines that meet or exceed OEM specifications. Our remanufactured long blocks are completely disassembled, cleaned, inspected, and rebuilt using new components where necessary.
Every remanufactured diesel long block undergoes rigorous dynamometer testing to ensure optimal performance. With over 40 years of experience and a database of 473,000+ engines, we're America's trusted source for remanufactured long block engines.
Common Cummins N14 Problems We Address
Our remanufacturing process specifically addresses these known issues with Cummins N14 engines:
- EGR cooler failures leading to coolant leaks
- Turbocharger actuator issues causing reduced power
- Fuel injector problems resulting in rough idle
- Head gasket failures from overheating
- Crankshaft position sensor failures
- Oil dilution from regeneration cycles
Our technicians use updated components and improved techniques to prevent these common failures in your remanufactured engine.
Engine Specifications
Peterbilt Vehicle Compatibility
Cummins N14 engines are commonly found in these Peterbilt vehicles:
- Model 579 highway trucks
- Model 389 classic trucks
- Model 567 vocational trucks
- Model 520 refuse trucks
- Model 348 medium-duty trucks
- Model 337 delivery trucks
What's Included With Your Remanufactured Long Block
Complete long block assembly with all new/remanufactured components
Core Components
- Remanufactured Engine Block
Cleaned, inspected, and machined to OEM specifications
- New Pistons & Rings
Premium quality pistons with new ring sets
- Reground Crankshaft
Precision ground to factory tolerances
- New Main Bearings
OEM-spec main bearings for proper clearance
- New Rod Bearings
Connecting rod bearings replaced
- New Camshaft
New or reground camshaft (where applicable)
Timing Components
- New Timing Chain/Belt
Complete timing set included
- New Timing Gears/Sprockets
All timing components replaced
- New Tensioners & Guides
Timing tensioners and guides included
Valvetrain
- New Lifters/Tappets
Hydraulic or solid lifters replaced
- Reconditioned Cylinder Head(s)
Heads resurfaced and pressure tested
- New Valve Seals
All valve stem seals replaced
Seals & Lubrication
- New Oil Pump
Oil pump replaced for proper lubrication
- New Gasket Set
Complete gasket set included
- New Front & Rear Seals
All main seals replaced
- New Freeze Plugs
Core plugs replaced
Frequently Asked Questions: 2001 Peterbilt 378 Cummins N14 Remanufactured Engine
A remanufactured Cummins N14 14.0L engine typically costs 40-60% less than a brand new engine from the dealer, making it the most cost-effective option for your 2001 Peterbilt 378. The exact price depends on the specific configuration, condition of your core return, and current availability. For an accurate, no-obligation quote on a Cummins N14 remanufactured long block for your 2001 Peterbilt 378, call our engine specialists at (631) 991-7700 or request a quote online. We offer competitive pricing and fast delivery.
What Our Customers Say
Trusted by thousands of customers nationwide
"Great experience from start to finish. The price was competitive and the quality exceeded my expectations. Will definitely buy again."
"Needed an engine fast for my work truck. They had it in stock and shipped same day. Engine is running perfectly. Highly recommend!"
"Excellent quality engine at a great price. The team was very helpful in finding the right engine for my truck. Shipped fast and arrived in perfect condition."
Warranty & Quality Assurance
Core Return Required: A refundable core deposit is required. We provide a prepaid shipping label for your old engine core return.
Call us for the best price on this Cummins N14 remanufactured long block. Prices may vary based on configuration.
Email: [email protected]
Why US Engine Production?
- 40+ years of experience
- 473,000+ engines in database
- Nationwide shipping
- Expert technical support
- Quality guaranteed
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More Peterbilt 378 Engines
Other model years available for the Peterbilt 378
1998 Peterbilt 378
Caterpillar 3306 10.5L
2003 Peterbilt 378
Cummins ISX 15.0 15.0L
2006 Peterbilt 378
Cummins ISM 10.8 10.8L
1991 Peterbilt 378
Caterpillar 3406 14.6L
1998 Peterbilt 378
Caterpillar C12 12.0L
1996 Peterbilt 378
Cummins M11 10.8L
2005 Peterbilt 378
Caterpillar C13 12.5L
1999 Peterbilt 378
Caterpillar C12 12.0L
Vehicles with Cummins N14 Engine
This same engine is also available for these vehicles
1988 Ford LTS9000
N14 14.0L DIESEL
1981 White WHL
N14 14.0L DIESEL
1990 Peterbilt 357
N14 14.0L DIESEL
1988 International 2574
N14 14.0L DIESEL
1984 Ford LT9000
N14 14.0L DIESEL
1985 Autocar C / DC
N14 14.0L DIESEL
1995 Freightliner FLL086
N14 14.0L DIESEL
2001 Kenworth T600A
N14 14.0L DIESEL
More Peterbilt Engines
Browse other Peterbilt models with remanufactured engines
2015 Peterbilt 389
PACCAR MX-13 12.9L
2020 Peterbilt 367
Cummins ISX 11.9 11.9L
1986 Peterbilt 359
Detroit Diesel 8V-92 12.1L
1997 Peterbilt 330
Cummins 6CT8.3 8.3L
1986 Peterbilt 349
Caterpillar 3406 14.6L
2019 Peterbilt 337
PACCAR PX-7 6.7L
1991 Peterbilt 357
Caterpillar 3176 10.3L
2010 Peterbilt 389
Detroit Diesel Series 60 12.7L
More Cummins Engines
Explore other Cummins engine models we carry
1995 International 9300
Cummins M11 10.8L DIESEL
2015 Volvo VNL
Cummins ISX 11.9G 11.9L CNG
1985 International F2674
Cummins N14 14.0L DIESEL
1998 Ford LT8513
Cummins 6CT8.3 8.3L DIESEL
1988 Freightliner FLT086
Cummins L10 10.0L DIESEL
2012 Freightliner M2 106
Cummins ISB6.7-200 6.7L DIESEL
2003 Kenworth T600A
Cummins ISM 10.8 10.8L DIESEL
1999 Peterbilt 378
Cummins M11 10.8L DIESEL
Similar 14.0L DIESEL Engines
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Buy Cummins N14 Remanufactured Long Block Engines
US Engine Production is your trusted source for remanufactured Cummins long block engines. Our N14 remanufactured long blocks for Peterbilt vehicles include all new internal components including pistons, rings, bearings, timing components, and gaskets. Every long block is dyno tested and backed by our 1-year, unlimited mileage warranty. Whether you need a replacement long block engine for your 2001 Peterbilt 378or any other application, our team of experts is ready to help. Call us at (631) 991-7700 or email [email protected] for a free quote today.
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WARNING: Crude oil, gasoline, diesel fuel and other petroleum products can expose you to chemicals including toluene and benzene, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov
