2003 Peterbilt 387 C11 11.1 Caterpillar Remanufactured Long Block Engine
DIESEL • Dyno Tested • Warranty Included

About This Caterpillar C11 Remanufactured Long Block
Looking for a quality remanufactured long block engine for your 2003 Peterbilt 387? US Engine Production offers premium remanufactured Caterpillar C11 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 Caterpillar C11 Problems We Address
Our remanufacturing process specifically addresses these known issues with Caterpillar C11 engines:
- Injector o-ring failures causing fuel leaks
- HEUI pump failures affecting fuel delivery
- Turbocharger wastegate issues
- Cylinder liner pitting from coolant contamination
- Oil cooler failures
- ECM sensor failures
Our technicians use updated components and improved techniques to prevent these common failures in your remanufactured engine.
Engine Specifications
Peterbilt Vehicle Compatibility
Caterpillar C11 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: 2003 Peterbilt 387 Caterpillar C11 Remanufactured Engine
A remanufactured Caterpillar C11 11.1L engine typically costs 40-60% less than a brand new engine from the dealer, making it the most cost-effective option for your 2003 Peterbilt 387. The exact price depends on the specific configuration, condition of your core return, and current availability. For an accurate, no-obligation quote on a Caterpillar C11 remanufactured long block for your 2003 Peterbilt 387, 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
"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 Caterpillar C11 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 387 Engines
Other model years available for the Peterbilt 387
2001 Peterbilt 387
Caterpillar C16 15.8L
2008 Peterbilt 387
Caterpillar C15 14.6L
2004 Peterbilt 387
Caterpillar 3406 14.6L
2006 Peterbilt 387
Caterpillar C16 15.8L
2004 Peterbilt 387
Caterpillar C15 14.6L
1981 Peterbilt 387
Cummins N14 14.0L
1981 Peterbilt 387
Cummins N14 14.0L
2000 Peterbilt 387
Caterpillar C12 12.0L
Vehicles with Caterpillar C11 Engine
This same engine is also available for these vehicles
2007 Peterbilt 379
C11 11.1L DIESEL
2006 Oshkosh Motor Truck Co. S
C11 11.1L DIESEL
2006 International 5600i
C11 11.1L DIESEL
2006 Freightliner Columbia
C11 11.1L DIESEL
2006 Freightliner M2 112
C11 11.1L DIESEL
2005 Freightliner M2 106
C11 11.1L DIESEL
2005 Western Star 4900SA
C11 11.1L DIESEL
2007 Kenworth T600A
C11 11.1L DIESEL
More Peterbilt Engines
Browse other Peterbilt models with remanufactured engines
2009 Peterbilt 365
Caterpillar C13 12.5L
2001 Peterbilt 377
Caterpillar C10 10.3L
2007 Peterbilt 357
Caterpillar C9 8.8L
2021 Peterbilt 365
PACCAR MX-13 12.9L
2007 Peterbilt 335
Caterpillar C7 7.2L
1991 Peterbilt 357
Caterpillar 3406 14.6L
1985 Peterbilt 353
Caterpillar 3406 14.6L
2007 Peterbilt 320
Cummins ISC 8.3 8.3L
More Caterpillar Engines
Explore other Caterpillar engine models we carry
1985 Gillig Motorhome
Caterpillar 3208 10.4L DIESEL
2003 Kenworth T800
Caterpillar C16 15.8L DIESEL
1995 Spartan Motors Gladiator
Caterpillar 3406 14.6L DIESEL
2000 International 9900
Caterpillar 3406 14.6L DIESEL
1995 Chevrolet C70 Kodiak
Caterpillar 3116 6.6L DIESEL
1981 Ford CT8000
Caterpillar 3208 10.4L DIESEL
1996 Ford LA9000
Caterpillar 3306 10.5L DIESEL
1995 Peterbilt 379
Caterpillar 3406 14.6L DIESEL
Similar 11.1L DIESEL Engines
Other diesel engines with similar specifications
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Buy Caterpillar C11 Remanufactured Long Block Engines
US Engine Production is your trusted source for remanufactured Caterpillar long block engines. Our C11 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 2003 Peterbilt 387or 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
