1994 Duplex D9400 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 1994 Duplex D9400? 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
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: 1994 Duplex D9400 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 1994 Duplex D9400. 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 1994 Duplex D9400, 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
"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 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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More Duplex D9400 Engines
Other model years available for the Duplex D9400
1994 Duplex D9400
Caterpillar 3406 14.6L
1997 Duplex D9400
Detroit Diesel Series 60 12.7L
1994 Duplex D9400
Caterpillar 3406 14.6L
1996 Duplex D9400
Detroit Diesel Series 40 8.7L
1994 Duplex D9400
Caterpillar 3176 10.3L
1997 Duplex D9400
Cummins N14 14.0L
1996 Duplex D9400
Cummins M11 10.8L
1995 Duplex D9400
Detroit Diesel Series 60 12.7L
Vehicles with Cummins 6CT8.3 Engine
This same engine is also available for these vehicles
1991 Mack CM
6CT8.3 8.3L DIESEL
2000 Sterling Truck L7501
6CT8.3 8.3L DIESEL
1997 Peterbilt 330
6CT8.3 8.3L DIESEL
1997 Pierce Mfg. Inc. Enclosed Cab
6CT8.3 8.3L DIESEL
1991 Peterbilt 320
6CT8.3 8.3L DIESEL
1991 White/GMC WXLL
6CT8.3 8.3L DIESEL
1990 Kenworth T400
6CT8.3 8.3L DIESEL
1995 White/GMC WX
6CT8.3 8.3L DIESEL
More Duplex Engines
Browse other Duplex models with remanufactured engines
1990 Duplex D350
Detroit Diesel Series 60 12.7L
1997 Duplex D350
Detroit Diesel 6V-92N 9.0L
1991 Duplex D350
Detroit Diesel 8V-92 12.1L
1997 Duplex D350
Detroit Diesel Series 60 11.1L
1994 Duplex D9400
Detroit Diesel Series 60 12.7L
1991 Duplex D450
Detroit Diesel 8V-92 12.1L
1994 Duplex D9500
Cummins M11 10.8L
1989 Duplex L100
Detroit Diesel 6V-92N 9.0L
More Cummins Engines
Explore other Cummins engine models we carry
1991 Western Star 3800
Cummins L10 10.0L DIESEL
2000 Peterbilt 385
Cummins 6CT8.3 8.3L DIESEL
2004 International 7600
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1987 International F2575
Cummins N14 14.0L DIESEL
2005 Workhorse FasTrack FT1601
Cummins ISB-145 3.9L DIESEL
1991 GMC P3500
Cummins 3.9L DIESEL
2005 Freightliner MT35
Cummins ISB 5.9 5.9L DIESEL
1997 Dodge Ram 2500
Cummins 5.9L DIESEL
Similar 8.3L DIESEL Engines
Other diesel engines with similar specifications
1994 Freightliner FL80
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1996 Kenworth T400
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2001 New Flyer D35
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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 Duplex 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 1994 Duplex D9400or 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
