1998 Peterbilt 320 6CT8.3 8.3 Cummins Remanufactured Long Block Engine
DIESEL • Dyno Tested • Warranty Included

About This Cummins 6CT8.3 Remanufactured Long Block
Looking for a quality remanufactured long block engine for your 1998 Peterbilt 320? US Engine Production offers premium remanufactured Cummins 6CT8.3 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 6CT8.3 Problems We Address
Our remanufacturing process specifically addresses these known issues with Cummins 6CT8.3 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 6CT8.3 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 320 Cummins 6CT8.3 Remanufactured Engine
A remanufactured Cummins 6CT8.3 8.3L 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 320. 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 6CT8.3 remanufactured long block for your 1998 Peterbilt 320, 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
"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."
"I've bought several engines from US Engine Production over the years. Always top quality and their customer service is the best in the business."
"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."
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 6CT8.3 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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Other model years available for the Peterbilt 320
2003 Peterbilt 320
Caterpillar C10 10.3L
2003 Peterbilt 320
Cummins ISM 10.8 10.8L
2021 Peterbilt 320
Cummins ISX 11.9 11.9L
1987 Peterbilt 320
Cummins N14 14L
1996 Peterbilt 320
Cummins L10 10L
2001 Peterbilt 320
Cummins N14 14L
2007 Peterbilt 320
Caterpillar C11 11.1L
2005 Peterbilt 320
Cummins ISC 8.3 8.3L
Vehicles with Cummins 6CT8.3 Engine
This same engine is also available for these vehicles
2003 Thomas Transit Liner
6CT8.3 8.3L DIESEL
2000 Oshkosh Motor Truck Co. MPT
6CT8.3 8.3L DIESEL
1990 Peterbilt 375
6CT8.3 8.3L DIESEL
1993 Blue Bird All American FE
6CT8.3 8.3L DIESEL
2000 Pierce Mfg. Inc. Enclosed Cab
6CT8.3 8.3L DIESEL
1989 Peterbilt 320
6CT8.3 8.3L DIESEL
1991 Mack CM
6CT8.3 8.3L DIESEL
1995 Freightliner FLC112
6CT8.3 8.3L DIESEL
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2023 Peterbilt 337
PACCAR PX-7 6.7L
1987 Peterbilt 375
Cummins L10 10L
2007 Peterbilt 220
Cummins ISB 5.9L
2007 Peterbilt 340
Caterpillar C7 7.2L
2023 Peterbilt 579
PACCAR MX-13 12.9L
1981 Peterbilt 310
Detroit Diesel 6V-92N 9L
2007 Peterbilt 379
Caterpillar C13 12.5L
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Explore other Cummins engine models we carry
1992 International 9300
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2000 Nova Bus Corporation T706
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2012 El Dorado Axess
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2015 Ram 3500
Cummins ETK 6.7L DIESEL
2002 Chance Coach Transit Bus AH-28
Cummins B5.9G 5.9L CNG
1984 White WIL
Cummins N14 14L DIESEL
2015 Ram 3500
Cummins ETK 6.7L DIESEL
2015 Autocar LLC. Xspotter On Road
Cummins ISL-G 8.9L CNG
Similar 8.3L DIESEL Engines
Other diesel engines with similar specifications
1995 Spartan Motors Diamond
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2003 Freightliner FS65
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2009 Sterling Truck Acterra
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Buy Cummins 6CT8.3 Remanufactured Long Block Engines
US Engine Production is your trusted source for remanufactured Cummins long block engines. Our 6CT8.3 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 320or 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.
