2015 International 4300 ISB 6.7 6.7 Cummins Remanufactured Long Block Engine
DIESEL • Dyno Tested • Warranty Included

About This Cummins ISB 6.7 Remanufactured Long Block
Looking for a quality remanufactured long block engine for your 2015 International 4300? US Engine Production offers premium remanufactured Cummins ISB 6.7 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 ISB 6.7 Problems We Address
Our remanufacturing process specifically addresses these known issues with Cummins ISB 6.7 engines:
- Turbocharger failures from carbon buildup
- Head gasket issues from high cylinder pressures
- Fuel injector failures causing misfires
- EGR cooler cracks and leaks
- Cracked exhaust manifolds
- CP3 fuel pump failures
Our technicians use updated components and improved techniques to prevent these common failures in your remanufactured engine.
Engine Specifications
International Vehicle Compatibility
Cummins ISB 6.7 engines are commonly found in these International vehicles:
- LT Series highway trucks
- HX Series vocational trucks
- MV Series medium-duty trucks
- CV Series commercial trucks
- DuraStar delivery trucks
- WorkStar dump 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: 2015 International 4300 Cummins ISB 6.7 Remanufactured Engine
A remanufactured Cummins ISB 6.7 6.7L engine typically costs 40-60% less than a brand new engine from the dealer, making it the most cost-effective option for your 2015 International 4300. 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 ISB 6.7 remanufactured long block for your 2015 International 4300, 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
"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 Cummins ISB 6.7 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 International 4300 Engines
Other model years available for the International 4300
2012 International 4300
International DT466 7.6L
2022 International 4300
International MaxxForce DT 7.6L
2014 International 4300
International MaxxForce DT 7.6L
2011 International 4300
International DT466 7.6L
2008 International 4300
International MaxxForce DT 7.6L
2002 International 4300
International DT466 7.6L
2002 International 4300
Detroit Diesel Series 50 8.5L
2012 International 4300
International MaxxForce DT 7.6L
Vehicles with Cummins ISB 6.7 Engine
This same engine is also available for these vehicles
2024 Freightliner XC Lowered Rail
ISB 6.7 6.7L DIESEL
2015 Freightliner B2
ISB 6.7 6.7L DIESEL
2010 Freightliner XB Straight Rail
ISB 6.7 6.7L DIESEL
2024 Blue Bird All American FE
ISB 6.7 6.7L DIESEL
2021 Freightliner XC Raised Rail
ISB 6.7 6.7L DIESEL
2020 Freightliner XC Raised Rail
ISB 6.7 6.7L DIESEL
2019 Freightliner XC Raised Rail
ISB 6.7 6.7L DIESEL
2022 Freightliner XC Raised Rail
ISB 6.7 6.7L DIESEL
More International Engines
Browse other International models with remanufactured engines
1988 International 2674
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2000 International 5000
Caterpillar C10 10.3L
1991 International 4700
International DTA360 5.9L
1985 International 2155
International DT466 7.6L
2015 International 8600 TranStar
International N13 12.4L
2001 International 5500i
International DT530 8.7L
1983 International 2276 S
Cummins N14 14L
2003 International 2674
International DT466 7.6L
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Explore other Cummins engine models we carry
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1996 Spartan Motors Metro Star
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1996 Volvo ACL
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2016 Kenworth W900
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Buy Cummins ISB 6.7 Remanufactured Long Block Engines
US Engine Production is your trusted source for remanufactured Cummins long block engines. Our ISB 6.7 remanufactured long blocks for International 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 2015 International 4300or 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.
