Remanufactured Detroit DD15 14.8L (903 ci) Engine For Sale
2008–present — 455–560 hp | 1,550–1,850 lb-ft
The Detroit DD15 is the flagship heavy-duty diesel engine from Detroit (a Daimler Truck brand) and the most popular engine in the Freightliner Cascadia — the best-selling Class 8 truck in North Americ...
Starting from $9,000 – $16,000 — 1-Year Unlimited Mileage Warranty
Detroit DD15 Technical Specifications
About the Detroit DD15 Engine
The Detroit DD15 is the flagship heavy-duty diesel engine from Detroit (a Daimler Truck brand) and the most popular engine in the Freightliner Cascadia — the best-selling Class 8 truck in North America. With 14.8 liters of displacement and power ratings from 455 to 560 hp, the DD15 is purpose-built for long-haul over-the-road applications where fuel economy and reliability are paramount. The DD15 traces its engineering heritage to the Mercedes-Benz OM 472 engine platform, incorporating decades of European diesel engineering expertise. Detroit's Amplified Common Rail System (ACRS) delivers injection pressures up to 29,000 PSI, while the asymmetric turbocharger provides instant throttle response and a wide, flat torque curve. The DD15 is designed to work seamlessly with the DT12 automated manual transmission and Detroit axles as part of the integrated Detroit Powertrain, which optimizes shift points and cruise speed for maximum fuel efficiency. In real-world fleet testing, the DD15-equipped Cascadia has consistently delivered the best fuel economy in the Class 8 segment, making it the engine of choice for major fleets like Werner, Schneider, and J.B. Hunt.
Detroit DD15 Strengths
- Best-in-class fuel economy for long-haul Class 8 applications
- Integrated Detroit Powertrain (DD15 + DT12 + Detroit axles) optimizes efficiency
- Asymmetric turbo provides instant throttle response with zero turbo lag
- ACRS fuel system with 29,000 PSI injection pressure for clean, efficient combustion
- Mercedes-Benz OM 472 engineering heritage — proven European diesel technology
- Wide, flat torque curve delivers 1,850 lb-ft from 900 to 1,200 RPM
- B50 life rating exceeds 1,200,000 miles — industry-leading durability
Common Detroit DD15 Issues (Addressed in Our Remanufactured Engines)
- EGR cooler failure on 2008–2013 models can cause coolant loss and white smoke
- Turbo actuator solenoid failure leads to limp mode and reduced power
- Aftertreatment system issues including DPF clogging and DEF dosing valve failures
- Oil pan gasket leaks on some model years require pan removal for repair
- Piston ring wear on early models can cause oil consumption and blow-by
- Cam phaser issues on some 2010–2014 models cause timing-related codes
- CPC (Common Powertrain Controller) software glitches require dealer reflash
Vehicles with the Detroit DD15
Available Detroit DD15 Remanufactured Engines
Detroit DD15 Buying Guide
When purchasing a remanufactured Detroit DD15, verify the emissions certification (EPA 2010, GHG14, or GHG17) and horsepower rating match your truck. The DD15 is available from 455 to 560 hp with various torque ratings, and the ECM must be programmed to match. If your truck has the integrated Detroit Powertrain (DT12 transmission + Detroit axles), ensure the DD15's software is compatible with the powertrain controller. A quality remanufactured DD15 should include new or remanufactured injectors, rebuilt turbocharger, updated EGR components, new piston rings, and fresh gaskets throughout. Ask about cam phaser updates if purchasing a 2010–2014 model year engine.
Frequently Asked Questions — Detroit DD15
How much does a remanufactured Detroit DD15 engine cost?
A remanufactured Detroit DD15 14.8L engine typically costs between $9,000 and $16,000 depending on the model year, emissions configuration, and horsepower rating. Earlier 2008–2013 models are generally less expensive, while newer GHG17-certified engines with advanced features cost more. At US Engine Production, all DD15 engines are fully dyno tested and backed by our comprehensive warranty. Call (631) 991-7700 for an exact quote.
Is the Detroit DD15 a good engine?
Yes, the Detroit DD15 is one of the best heavy-duty diesel engines available. It powers the Freightliner Cascadia — the best-selling Class 8 truck in North America — and is the engine of choice for major fleets due to its exceptional fuel economy and reliability. The DD15 has a B50 life rating exceeding 1,200,000 miles, and its integrated powertrain design delivers the best fuel economy in the Class 8 segment.
What are common Detroit DD15 problems?
Common DD15 issues include EGR cooler failures (especially on 2008–2013 models), turbo actuator solenoid failures, aftertreatment system issues (DPF clogging, DEF dosing valve failures), oil pan gasket leaks, and cam phaser issues on 2010–2014 models. Our remanufactured DD15 engines address all known issues with updated components, new injectors, rebuilt turbos, and thorough dyno testing.
What trucks use the Detroit DD15 engine?
The Detroit DD15 is used in Freightliner Cascadia, Freightliner Cascadia Evolution, Freightliner 122SD, Freightliner Coronado SD, Western Star 4900, Western Star 5700XE, and Western Star 49X. It is exclusively available in Daimler Truck North America vehicles and is not offered in Peterbilt, Kenworth, or International trucks.
DD15 vs Cummins ISX — which is better?
Both are excellent engines. The DD15 offers better fuel economy when paired with the integrated Detroit Powertrain (DT12 transmission + Detroit axles) in Freightliner trucks. The Cummins ISX/X15 offers more flexibility since it's available across multiple truck brands. The DD15 is the better choice if you run Freightliner Cascadias; the ISX is better if you need multi-brand compatibility or run Peterbilt/Kenworth trucks.
How many miles can a Detroit DD15 last?
A well-maintained Detroit DD15 can last 800,000 to over 1,200,000 miles before requiring a major overhaul. Detroit rates the DD15 with a B50 life exceeding 1,200,000 miles — the highest in the industry. Major fleets routinely run DD15 engines past 1,000,000 miles with proper maintenance including regular oil changes, DPF cleaning, and turbo service.
Detroit Diesel Troubleshooting Guides
Detroit Series 60 Problems
Jake brake cracks, turbo seals, injector O-rings, and EGR issues explained.
Read Guide →Diesel Engine Cost Guide
Complete pricing for remanufactured Detroit engines by model.
Read Guide →Reman vs Rebuilt Engines
Which option is right for your Detroit? Compare quality, cost, and warranty.
Read Guide →Installation Guide
Step-by-step guide for installing your remanufactured engine.
Read Guide →