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DPS Cummins ISX15 / X15 Stock Turbo Non-EGR Exhaust Manifold
Choose Options$1,149.00 - $1,399.00
Semi Class 8 & 7
Commercial & Semi-Truck Diesel Performance Parts
Heavy-duty diesel performance parts engineered for fleet trucks, owner-operators, and industrial haulers. From Cummins ISX15 and X15 engines to CAT C15 and Detroit Diesel platforms, Diesel Power Source provides reliable airflow, turbocharging, and manifold solutions that deliver power, durability, and uptime for professional applications.
Our commercial and semi-truck upgrades are built to improve reliability, towing capacity, and fuel efficiency under the most demanding conditions. Each part is precision-cast from high-nickel materials, CNC-machined for fitment accuracy, and designed to reduce EGTs, improve boost control, and extend turbocharger life. Whether you operate long-haul, vocational, or industrial diesel equipment, Diesel Power Source delivers proven performance backed by engineering excellence.
Advantages of Upgrading Your Semi or Fleet Diesel Truck
- More Power & Torque: High-flow manifolds and turbochargers optimize airflow, giving your engine the torque it needs for grades, loads, and long hauls.
- Better Fuel Efficiency: Reduced exhaust restriction improves combustion and mileage—saving thousands annually in fuel costs for fleets and owner-operators.
- Longer Engine Life: Cooler EGTs reduce stress on pistons and valves, protecting your investment under continuous heavy-duty cycles.
- Emissions Compatibility: Designed to support compliance with EPA emissions systems while enhancing overall performance and reliability.
- Reduced Downtime: Precision manufacturing ensures consistent fitment and fewer maintenance issues, keeping your truck on the road.
- Customizable Configurations: From single turbo replacements to compound setups, choose solutions tailored to your application and power goals.
Supported Diesel Platforms
- Cummins ISX15 / X15: Improved flow and temperature control with DPS manifolds and turbo conversion kits.
- CAT C13 / C15: High-durability components for reliability under sustained load.
- Detroit Diesel DD13 / DD15: Performance-driven solutions for fleets seeking fuel economy and extended service intervals.
- Paccar MX Engines: Custom airflow and boost options for vocational and heavy-haul trucks.
Ideal For
- Long-haul and regional trucking
- Fleet maintenance upgrades
- Vocational and heavy-haul operations
- Industrial diesel applications
Installation & Maintenance Tips
- Use new gaskets, fasteners, and high-temp anti-seize during installation.
- Inspect turbo studs and manifolds regularly for signs of fatigue or leaks.
- Pressure test the exhaust system post-installation to ensure proper sealing.
- Follow manufacturer torque specs and re-check after initial heat cycles.
Explore related categories: ISX15 Exhaust Manifolds, ISX15 Turbo Conversion Kits, S400 Turbos, and Compound Turbo Systems.
For light-duty or pickup applications, visit: Dodge Cummins Performance Parts.
Frequently Asked Questions
Are these parts compatible with emissions systems?
Yes. Many DPS commercial parts are designed to work with OEM emissions equipment. Always confirm compatibility with your engine type and follow applicable emissions regulations.
Will these upgrades improve fuel efficiency?
Absolutely. By improving airflow and reducing exhaust restriction, our manifolds and turbos enhance combustion efficiency, helping lower fuel consumption on long routes.
What’s the best upgrade for towing or heavy hauling?
For extreme towing or heavy-haul applications, compound turbo setups or upgraded S400-based systems provide broader boost control and significantly lower EGTs.
How long do Diesel Power Source manifolds last?
DPS manifolds are cast from high-nickel alloys and engineered to handle continuous thermal stress. Many fleet customers report long-term reliability beyond factory components.
Do you offer parts for fleet bulk orders?
Yes. Diesel Power Source supports fleet and wholesale programs with volume pricing and distribution support. Contact our sales team for customized solutions.
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