1998 Peterbilt 378 N14 14 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 1998 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: 1998 Peterbilt 378 Cummins N14 Remanufactured Engine
A remanufactured Cummins N14 14L engine typically costs 40-60% less than a brand new engine from the dealer, making it the most cost-effective option for your 1998 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 1998 Peterbilt 378, call our engine specialists at (631) 991-7700 or request a quote online. We offer competitive pricing with free nationwide shipping.
What Our Customers Say
Trusted by thousands of customers nationwide
"Was worried about buying a remanufactured engine but these guys made it easy. Engine runs like new and the warranty gives me peace of mind."
"Fast shipping and the engine was exactly as described. Installation went smoothly and it's been running great for 6 months now."
"Great experience from start to finish. The price was competitive and the quality exceeded my expectations. Will definitely buy again."
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 C10 10.3L
1993 Peterbilt 378
Cummins N14 14L
1995 Peterbilt 378
Caterpillar 3306 10.5L
1998 Peterbilt 378
Cummins M11 10.8L
1997 Peterbilt 378
Caterpillar 3406 14.6L
1992 Peterbilt 378
Caterpillar 3406 14.6L
1992 Peterbilt 378
Detroit Diesel Series 60 12.7L
2002 Peterbilt 378
Cummins M11 10.8L
Vehicles with Cummins N14 Engine
This same engine is also available for these vehicles
1998 International 2574
N14 14L DIESEL
1987 GMC Astro
N14 14L DIESEL
1988 International F2575
N14 14L DIESEL
1985 Oshkosh Motor Truck Co. P
N14 14L DIESEL
1999 Oshkosh Motor Truck Co. P
N14 14L DIESEL
1996 Kenworth K100E
N14 14L DIESEL
1998 Western Star 4800
N14 14L DIESEL
1992 Peterbilt 378
N14 14L DIESEL
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Browse other Peterbilt models with remanufactured engines
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PACCAR MX-13 12.9L
1992 Peterbilt 320
Caterpillar 3306 10.5L
2000 Peterbilt 378
Cummins N14 14L
2007 Peterbilt 357
Caterpillar C9 8.8L
1985 Peterbilt 353
Caterpillar 3406 14.6L
1986 Peterbilt 362
Detroit Diesel 6V-92N 9L
2016 Peterbilt 365
Cummins ISX 11.9G 11.9L
1993 Peterbilt 378
Cummins 6CT8.3 8.3L
More Cummins Engines
Explore other Cummins engine models we carry
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2017 Ram 2500
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2001 Dodge Ram 3500
Cummins 5.9L DIESEL
2013 Kenworth W900
Cummins ISL-G 8.9L CNG
2014 Ram 3500
Cummins ETK 6.7L DIESEL
2010 Peterbilt 384
Cummins ISL-G 8.9L CNG
2005 Dodge Ram 2500
Cummins 5.9L DIESEL
Similar 14L 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 1998 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.
