Is your DD15 ready for a rebuild? Then we have good news! Highway & Heavy Parts carries an inframe engine rebuild kit for your DD15 and it comes with all the benefits of aftermarket innovations.
Even though it can take longer for aftermarket manufacturers to make parts because of patent restrictions, when they do, they have a chance to make the parts better and solve problems from the original design.
That’s what happened with this kit for your DD15.
In this post, we’re taking you through what’s included in the kit and what improvements it has to make your life easier.
What’s In the Kit?

In this kit, you’ll be getting all the components you need for your inframe overhaul. Here are some of the things you’ll find included:
Piston Updates
The pistons in this kit include all the latest updates that you want when you’re overhauling your DD15. That means you’re getting the high-performance, one-piece, forged-steel monotherm piston.
It also has the latest designed cylinder liner that includes the anti-polish ring. This ring helps keep carbon from building up around the rings. It’s essentially a carbon scraper ring.
Upper Gasket Set
Also included in the kit is the complete upper gasket set. This gives you everything you need to take the head off and put it back on again. All new head bolts come with it as well.
We get a lot of questions about reusing head bolts. Sometimes you can use your old bolts, but if they are torque-to-yield, damaged, or stretched, they should not be put back on.
Worn head bolts affect the gasket install and can cause leaks and other engine issues.
Lower End Engine Bearing Kit
You’re also getting the lower end bearing kit. This includes:
- Rod bearings
- Main bearings
- Thrust bearings
- Piston cooling nozzles
- Water transfer tubes
You’ll notice that this kit comes with the smaller incidentals you don’t always think about when you’re ordering parts for a rebuild. We want to make sure that you’re getting all the parts you need to get the job done.
This kit comes with everything you need for an inframe overhaul of your DD15.
Highway and Heavy Parts is Here For You!
We know that rebuilding your engine is a big job. That’s why we’re here to help.
We don’t want to just sell you any old kit. We want to make sure you’re getting the one that will work the best for your diesel engine.
Our team of experts can answer your questions and help you diagnose your diesel engine needs. We have ASE Certified Technicians on staff, ready to find you the right components.
Not sure if this is the right kit for your engine? Give us a call at 844-304-7688! We have a large selection of rebuild kits for different engine models and can help you find what you’re looking for.
It’s our mission to take the risk out of buying diesel engine parts.
From diagnosis through delivery, we’re Highway & Heavy Parts!
Related Articles:
HIGHWAY AND HEAVY PARTS ANSWERS YOUR DIESEL ENGINE QUESTIONS: REBUILD KITS
Related Videos:
FAQs for the Detroit Diesel DD15 Inframe Engine Rebuild Kit
1. What’s included in the Detroit Diesel DD15 Inframe Engine Rebuild Kit?
The Detroit Diesel DD15 Inframe Engine Rebuild Kit from Highway and Heavy Parts includes all the components you need for a complete inframe overhaul. You’ll get forged-steel monotherm pistons, cylinder liners with anti-polish rings, a complete upper gasket set with new head bolts, and a lower end bearing kit. That kit includes rod bearings, main bearings, thrust bearings, piston cooling nozzles, and water transfer tubes.
2. What are the benefits of aftermarket updates in this DD15 kit?
The aftermarket components included in this Inframe Engine Rebuild Kit have been redesigned to improve upon the original OEM specs. That means enhanced durability, better wear resistance, and long-term reliability. For example, the pistons and cylinder liners now include features like anti-polish rings to reduce carbon buildup—an issue common in high-mileage diesel engines.
3. Can I reuse old head bolts on my Detroit Diesel DD15 rebuild?
It’s strongly recommended that you replace your DD15’s head bolts during a rebuild. Torque-to-yield bolts, which are common in these applications, stretch during installation and should not be reused. The Inframe Engine Rebuild Kit from Highway and Heavy Parts includes new head bolts to ensure proper torque, sealing, and long-term performance.
4. Does this kit include everything I need to rebuild my DD15?
Yes, the Inframe Engine Rebuild Kit for the DD15 is designed to be a complete solution. It contains all major components—gaskets, seals, pistons, bearings, bolts, and even smaller items like piston cooling nozzles—so there’s no guesswork. It’s built to help you get the job done right the first time.
5. How can Highway and Heavy Parts help with my DD15 rebuild?
Highway and Heavy Parts offers more than just parts. With ASE Certified Technicians on staff, we can help you diagnose symptoms, verify fitment, and ensure you’re getting the right Inframe Engine Rebuild Kit for your Detroit Diesel DD15. Call 844-304-7688 to speak with an expert or visit us online for fast, accurate support.






