2003 Peterbilt 320 C7 7.2 Caterpillar Remanufactured Long Block Engine
DIESEL • Dyno Tested • Warranty Included

About This Caterpillar C7 Remanufactured Long Block
Looking for a quality remanufactured long block engine for your 2003 Peterbilt 320? US Engine Production offers premium remanufactured Caterpillar C7 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 C7 Problems We Address
Our remanufacturing process specifically addresses these known issues with Caterpillar C7 engines:
- HEUI injector failures
- Turbocharger actuator problems
- Fuel transfer pump issues
- Cylinder head cracking
- Oil cooler housing leaks
- Regeneration system failures
Our technicians use updated components and improved techniques to prevent these common failures in your remanufactured engine.
Engine Specifications
Peterbilt Vehicle Compatibility
Caterpillar C7 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 320 Caterpillar C7 Remanufactured Engine
A remanufactured Caterpillar C7 7.2L 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 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 Caterpillar C7 remanufactured long block for your 2003 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
"Great experience from start to finish. The price was competitive and the quality exceeded my expectations. Will definitely buy again."
"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."
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 C7 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 320 Engines
Other model years available for the Peterbilt 320
2003 Peterbilt 320
Caterpillar C7 7.2L
2011 Peterbilt 320
Cummins ISX 15.0 15L
2007 Peterbilt 320
Caterpillar C7 7.2L
1991 Peterbilt 320
Detroit Diesel Jun-71 7L
1996 Peterbilt 320
Cummins M11 10.8L
2002 Peterbilt 320
Caterpillar C10 10.3L
2010 Peterbilt 320
Cummins ISL-G 8.9L
1997 Peterbilt 320
Caterpillar 3306 10.5L
Vehicles with Caterpillar C7 Engine
This same engine is also available for these vehicles
2005 GMC C7500 Topkick
C7 7.2L DIESEL
2008 Freightliner XB Straight Rail
C7 7.2L DIESEL
2006 Thomas Transit Liner
C7 7.2L DIESEL
2005 GMC C6500 Topkick
C7 7.2L DIESEL
2006 Chevrolet C7500 Kodiak
C7 7.2L DIESEL
2007 Chevrolet C6500 Kodiak
C7 7.2L DIESEL
2006 Sterling Truck Acterra
C7 7.2L DIESEL
2009 Chevrolet C6500 Kodiak
C7 7.2L DIESEL
More Peterbilt Engines
Browse other Peterbilt models with remanufactured engines
2018 Peterbilt 337
PACCAR PX-7 6.7L
1994 Peterbilt 357
Cummins L10 10L
1991 Peterbilt 320
Cummins L10 10L
1984 Peterbilt 349
Cummins L10 10L
1991 Peterbilt 357
Caterpillar 3306 10.5L
1998 Peterbilt 357
Cummins 6CT8.3 8.3L
2010 Peterbilt 337
PACCAR PX-8 8.3L
1985 Peterbilt 310
Detroit Diesel 8V-71 9.3L
More Caterpillar Engines
Explore other Caterpillar engine models we carry
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1994 Kenworth C550
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1995 Freightliner FLC112
Caterpillar 3176 10.3L DIESEL
2007 Kenworth T600A
Caterpillar C13 12.5L DIESEL
1996 Peterbilt 362
Caterpillar 3406 14.6L DIESEL
2004 Chevrolet C8500
Caterpillar C7 7.2L DIESEL
2009 Kenworth T660
Caterpillar C13 12.5L DIESEL
1994 Peterbilt 376
Caterpillar 3406 14.6L DIESEL
Similar 7.2L DIESEL Engines
Other diesel engines with similar specifications
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Buy Caterpillar C7 Remanufactured Long Block Engines
US Engine Production is your trusted source for remanufactured Caterpillar long block engines. Our C7 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 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.
