2001 Peterbilt 320 3126 7.2 Caterpillar Remanufactured Long Block Engine
DIESEL • Dyno Tested • Warranty Included

About This Caterpillar 3126 Remanufactured Long Block
Looking for a quality remanufactured long block engine for your 2001 Peterbilt 320? US Engine Production offers premium remanufactured Caterpillar 3126 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 3126 Problems We Address
Our remanufacturing process specifically addresses these known issues with Caterpillar 3126 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 3126 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: 2001 Peterbilt 320 Caterpillar 3126 Remanufactured Engine
A remanufactured Caterpillar 3126 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 2001 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 3126 remanufactured long block for your 2001 Peterbilt 320, 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 Caterpillar 3126 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
2018 Peterbilt 320
PACCAR PX-9 8.9L
1998 Peterbilt 320
Cummins 6CT8.3 8.3L
1995 Peterbilt 320
Cummins M11 10.8L
1988 Peterbilt 320
Cummins 6CT8.3 8.3L
1996 Peterbilt 320
Caterpillar 3306 10.5L
2014 Peterbilt 320
Cummins ISL-G 8.9L
2015 Peterbilt 320
Cummins ISX 11.9G 11.9L
2004 Peterbilt 320
Caterpillar C7 7.2L
Vehicles with Caterpillar 3126 Engine
This same engine is also available for these vehicles
2004 Chevrolet C8500
3126 7.2L DIESEL
2000 Freightliner XB Line
3126 7.2L DIESEL
2000 Chevrolet T6500
3126 7.2L DIESEL
2004 Chevrolet C8500
3126 7.2L DIESEL
1998 Peterbilt 357
3126 7.2L DIESEL
1999 Spartan Motors Rangemaster
3126 7.2L DIESEL
1995 Gillig Motorhome
3126 7.2L DIESEL
2002 Freightliner FB65
3126 7.2L DIESEL
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Browse other Peterbilt models with remanufactured engines
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2023 Peterbilt 579
PACCAR PX-9 8.9L
2004 Peterbilt 357
Caterpillar C10 10.3L
1990 Peterbilt 378
Cummins N14 14L
2004 Peterbilt 320
Cummins ISM 10.8 10.8L
1993 Peterbilt 378
Caterpillar 3176 10.3L
2008 Peterbilt 357
Cummins ISM 10.8 10.8L
2016 Peterbilt 365
PACCAR PX-9 8.9L
More Caterpillar Engines
Explore other Caterpillar engine models we carry
1996 Ford LTS9000
Caterpillar 3406 14.6L DIESEL
2007 GMC C6500 Topkick
Caterpillar C7 7.2L DIESEL
1988 Ottawa YT60T
Caterpillar 3208 10.4L DIESEL
1996 Chevrolet P60
Caterpillar 3116 6.6L DIESEL
2006 Chevrolet C6500 Kodiak
Caterpillar C7 7.2L DIESEL
1984 Ford LT9000
Caterpillar 3406 14.6L DIESEL
1992 White/GMC WG
Caterpillar 3306 10.5L DIESEL
1994 Peterbilt 375
Caterpillar 3306 10.5L DIESEL
Similar 7.2L DIESEL Engines
Other diesel engines with similar specifications
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2006 Chevrolet C6500 Kodiak
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2006 GMC C6500 Topkick
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Buy Caterpillar 3126 Remanufactured Long Block Engines
US Engine Production is your trusted source for remanufactured Caterpillar long block engines. Our 3126 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 2001 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.
