1990 Duplex D350 8V-92 12.1 Detroit Diesel Remanufactured Long Block Engine
DIESEL • Dyno Tested • Warranty Included

About This Detroit Diesel 8V-92 Remanufactured Long Block
Looking for a quality remanufactured long block engine for your 1990 Duplex D350? US Engine Production offers premium remanufactured Detroit Diesel 8V-92 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 Detroit Diesel 8V-92 Problems We Address
Our remanufacturing process specifically addresses these known issues with Detroit Diesel 8V-92 engines:
- EGR cooler failures
- Turbocharger actuator issues
- Injector problems causing white smoke
- Oil cooler failures
- Crankshaft position sensor failures
- DPF regeneration issues
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: 1990 Duplex D350 Detroit Diesel 8V-92 Remanufactured Engine
A remanufactured Detroit Diesel 8V-92 12.1L engine typically costs 40-60% less than a brand new engine from the dealer, making it the most cost-effective option for your 1990 Duplex D350. The exact price depends on the specific configuration, condition of your core return, and current availability. For an accurate, no-obligation quote on a Detroit Diesel 8V-92 remanufactured long block for your 1990 Duplex D350, 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
"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."
"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."
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 Detroit Diesel 8V-92 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 D350 Engines
Other model years available for the Duplex D350
1989 Duplex D350
Detroit Diesel 8V-92 12.1L
1990 Duplex D350
Detroit Diesel 8V-92 12.1L
1994 Duplex D350
Detroit Diesel 6V-92N 9.0L
1993 Duplex D350
Detroit Diesel 6V-92N 9.0L
1993 Duplex D350
Detroit Diesel 8V-92 12.1L
1997 Duplex D350
Detroit Diesel 6V-92N 9.0L
1997 Duplex D350
Cummins M11 10.8L
1991 Duplex D350
Detroit Diesel 8V-92 12.1L
Vehicles with Detroit Diesel 8V-92 Engine
This same engine is also available for these vehicles
1981 Peterbilt 353
8V-92 12.1L DIESEL
1990 Spartan Motors Motorhome
8V-92 12.1L DIESEL
1992 Duplex D350
8V-92 12.1L DIESEL
1986 Western Star 4900
8V-92 12.1L DIESEL
1992 Sutphen Corp. Special
8V-92 12.1L DIESEL
1985 Kenworth K100E
8V-92 12.1L DIESEL
1989 Freightliner FLA086
8V-92 12.1L DIESEL
1985 Freightliner FLT086
8V-92 12.1L DIESEL
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Browse other Duplex models with remanufactured engines
1995 Duplex D9500
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1994 Duplex D500
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1994 Duplex D9500
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1991 Duplex D350
Detroit Diesel Series 60 12.7L
1991 Duplex L100
Detroit Diesel 8V-92 12.1L
1994 Duplex D9400
Caterpillar 3406 14.6L
1991 Duplex D500
Detroit Diesel 8V-92 12.1L
1992 Duplex D500
Detroit Diesel Series 60 12.7L
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1988 Sutphen Corp. Special
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2003 Motor Coach Industries 102DL3
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2007 Freightliner Argosy
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1981 Mack R
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1986 Transportation Mfg Corp. 96A2
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Buy Detroit Diesel 8V-92 Remanufactured Long Block Engines
US Engine Production is your trusted source for remanufactured Detroit Diesel long block engines. Our 8V-92 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 1990 Duplex D350or 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.
PROPOSITION 65 WARNING
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
