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About Detroit Diesel

Detroit Diesel was born and bred to meet the American demand for diesel trucking in 1938, with none other than General Motors at the helm. After being born from the biggest of the Big Three, Detroit Diesel went on to create countless classic diesel parts ranging from engines to minor accessories. Despite the success of the brand, General Motors eventually sold Detroit Diesel to Daimler-Chrysler in 2000. As a part of Daimler-Chrysler, Detroit Diesel has access to the global resources and expertise of the world's foremost transportation company. It greatly benefits a lot of its customers. One year later, the brand decided to go beyond designing and manufacturing engines, simplifying its name to just Detroit®. Today, Detroit remains a part of Daimler Trucks North America, together with other major manufacturers, including Western Star Trucks, Freightliner Trucks, Freightliner Custom Chassis Corporation, and Thomas Built Buses. Since its inception, it has already built over 5 million engines, more than 1 million of which are still in operation worldwide. If your fleet still uses these engines, you'd be glad to know that the brand remains committed to serving you through its wide parts and distribution network found in over 800 locations in North America.

Built Better - Using the most advanced technology to bring efficiency and performance to the next level.

Highly Reliable - Rigorously tested to deliver maximum reliability for the long haul.

Quality - Detroit’s state-of-the-art manufacturing facility is the epicenter of advanced quality, technology, and innovation.

Full Line - Design your vehicle with Detroit’s wide range of superior components.

Detroit Diesel Parts

Detroit Diesel is more than just an engine manufacturer. It is also a proud designer and producer of transmissions, axles, powertrain, and genuine parts. All these Detroit Diesel parts combined with passionate individuals behind the production of each product are what make Detroit® a global leader in providing customers with optimal business and safety solutions.

Detroit Engines

World-class fleets and experienced truck owner-operators demand only the best for their vehicles. That is why Detroit® supplies only high-performance engines that offer the best-in-class fuel economy and low-cost maintenance and service. Made using the most advanced engine technologies engineered today, each Detroit® engine is guaranteed to meet the highest standards for superior performance, efficiency, and reliability. Here are the options available for Detroit® engines:

Detroit® DD5™ - Designed to keep your trucks moving, the DD5 is a next-generation mid-range engine that delivers maximum efficiency with exceptional endurance. It is ideal for use in short-haul pickup and delivery.

Detroit® DD8™ - Engineered to drive commerce, the DD8 is the most technologically advanced mid-range engine available in its class. It features the innovative variable cam phasing technology that means fewer regens for a smooth operation.

Detroit® DD13™ - Explicitly designed for use in less-than-truckload, regional distribution, and vocational applications, the DD13 offers robust performance, excellent fuel economy, consistent horsepower, and easy serviceability.

Detroit® DD15™ - Featuring a three-stage integrated Jacobs® engine brake, the DD15 is proven to deliver quieter engine braking and superior braking power. It is made suitable for distribution, construction, fire and emergency, dump, government, motor home, oil & gas, refuse, and regional.

Detroit® DD16™ - Biggest, toughest, and most powerful—that's the DD16. It has a wide, flat torque curve, and it delivers up to 2050 lb/ft and 600 HP, allowing your truck to handle even the most demanding jobs while performing with the fuel efficiency and reliability you've come to rely on from Detroit.

Legacy Engines - This is Detroit’s line of most reliable and innovative diesel engines that it has designed for a variety of applications over the years.

Detroit Axles

Equip your fleet with Detroit® axles for reliable precision and unmatched stability for the long haul. These maneuverable and versatile axles are made to fit into the tightest spots or haul up the steepest grades. There are three options available from this product category, which include the following:

Detroit® Front-Steer Axles - Machined and assembled in a state-of-the-art facility, the Detroit® front-steer axles are made to offer rugged strength in a lightweight package. They come in multiple ratings to meet your specific weight distribution needs. They also provide superior maneuverability with a 55-degree wheel cut. Equipped with needle bearings instead of bushings, these axles are guaranteed not to damage the kingpins.

Detroit® Single Rear Axles - With larger differentials and precision-machined gears, the Detroit® single rear axles mean more uptime, increased productivity, and reduced total cost of ownership. These are explicitly designed for higher torque applications, increased payload capacity, and quieter operation. They are made using the latest axle technology for improved efficiency and performance.

Detroit® Tandem Rear Axles - The tandem rear axles from Detroit® share the same features as the single rear axles. The only difference is that these axles feature an optional axle lubrication management (ALM) system, which helps reduce friction and parasitic loss by actively regulating the oil level at the ring gear and friction-loss optimized pinion bearings.

Detroit Transmissions

Rugged, reliable, and ready to work. These are the words that best describe Detroit’s transmissions, notably the DT12® vocational series. This series is available in two vocational models: the DT12®-V and DT12-VX, and is now available in the Western Star 49X. It also comes equipped with large, robust gears, which allow for increased input torque and gross combination weight (GCW). Other features include side PTO capability for increased application coverage, improved oil system design, and ease of operation for driver comfort.

Detroit Genuine Parts and Remanufactured Detroit® Genuine Parts

Keep your fleet in shape—make Detroit® your trusted partner for all your maintenance and repair needs. With a comprehensive range of Detroit® genuine parts, this brand ensures truck drivers get back on the road in no time. All these parts are designed and manufactured to deliver exceptional performance, superior durability, and maximum reliability. Whether you need a replacement Detroit fuel line, a new hose for the transmission, or as simple as gaskets for the engine, this brand has got you covered. If you’re a little low on budget, Detroit has got cost-effective alternatives for you too. Introducing Detroit’s line of remanufactured Detroit® genuine parts. These remanufactured components offer the same performance, durability, and reliability without putting a dent in your wallet.

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You can find a wide array of Detroit Diesel parts to restore your truck's engine, transmission, or axle right here at You might think these parts will cost you a lot, but they are actually available at competitive prices so that you can enjoy more savings. When you are ready to shop, you can simply enter the part number, keyword, or cross-reference, and we will filter out the search results for you. For questions or additional information, you may reach us through our hotline number. Our friendly and knowledgeable customer service staff are on standby ready to assist you with any concerns you may have. Browse through our wide selection of Detroit Diesel parts and place your order today. Our fast, hassle-free delivery ensures you get your needed products in no time. And if you have questions about shipping, you can always give us a call.