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Diesel Engine Rebuild Kits - Overhaul Kits and Parts
HD Kits / HeavyDutyKits.com supplies diesel engine in-frame and out-of-frame overhaul rebuild kits both for off-highway and on-highway heavy-duty applications. Our diesel rebuild kits are manufactured to thrive in the most demanding working environments. No matter the type of environment you work in, marine, truck, construction, oil & gas or power generation, our diesel engine rebuild kits will always deliver.
We carry various types of heavy-duty diesel engine in-frame & overhaul kits for you to make your choice from. Whether you need a Re-Ring kit, In-frame kit, Overhaul kit or a Piston-less kit we have them all. Along with rebuild kits, we carry a huge assortment of loose parts as well. Water pumps, oil pumps, crankshafts, cylinder heads, cylinder blocks, gaskets, bearings, injectors, oil coolers, thermostats, valves, guides, springs and much more.
At HD Kits / HeavyDutyKits.com we understand the importance of minimizing your diesel engine down time, that is why we will work with you to ensure you get the right rebuild kit for your needs as quickly as possible. More still, we have professionals on stand-by willing to work with you to deliver the best option for your engine. We know that sometimes you might need help in a hurry. We are here to make it happen! Just call any of our HeavyDutyKits.com diesel engine experts and get whatever questions you might have about your diesel engines answered right away.
Our top brands include Cummins, Detroit Diesel, Caterpillar, International/Navistar, Komatsu, Mack, Ford, Dodge, GMC, Perkins, John Deere, Volvo and Deutz. No matter your engine brand, we can offer a quick and honest solution to your particular situation. All you have to do is pick up the phone and call toll free – 1-888-642-6460. We will be happy to assist you!
At HD Kits / HeavyDutyKits.com, we also understand the importance of quality. This is why we pay particular attention when choosing our diesel engine parts. We only deliver top quality diesel engine parts brands and nothing less. Most rebuild kits carry a 2 – year manufacture warranty without mileage or hour qualification!
Order all your diesel engine rebuild kits from HeavyDutyKits.com on-line equipment store and rest assured you will receive the right parts for your engine. We are a leading kits source for truck engines and are determined to assist our customers with their engine needs. We understand the importance of your truck to you and we want nothing more than to get you back on the road real fast! Our in-frame and out-of-frame overhaul rebuild kits will provide you with everything you are going to need to do the job right.
Most Selling Diesel Products
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Exhaust System
Turbo Conversion Kit For Cummins ISX / ISX15 Engines
Buy new Turbo Conversion Kit For Cummins ISX Engines From Heavy Duty Kits At discounted rates. 1 Years Warranty, Free Shipping. Call +1-888-642-6460 Now.
Rated 5.00 out of 5(2 reviews) -
C15 Acert - MXS/BXS/SDP
Caterpillar C15 Acert Cylinder Head – New | 132-9976 | 223-7263
Brand New Cylinder Head For Caterpillar C15 ACERT 132-9976 Engine From HDKits. Free Shipping, 1 Year Warranty. Call +1-888-642-6460 Now.
(0 reviews) -
Dual Cam
Cummins ISX Engine Dual Overhead Camshaft In-frame Rebuild Kits
HD Kits offers Cummins ISX Dual Overhead Camshaft Engine in-frame rebuild kits. 2 year warranty. Free shipping. Call 1-888-642-6460
(0 reviews) -
C15 - 6NZ, MBN
Caterpillar 3406E Performance Cylinder Head | 1835296 / 2635055
Buy Brand New Cylinder Head Assembly For C15 6NZ Caterpillar Diesel Engine and 3406E Model Part # 245-4324, 2454324 From HD kits. Free Shipping, 1 Year Warranty. Call +1-888-642-6460 Now.
(0 reviews) -
C15 Acert - MXS, BXS, SDP
Caterpillar C15 Acert Engine Rebuild Kit – 16:1 – Low Compression | C15107-010
HD Kits. Out of frame engine overhaul rebuild kit for Caterpillar 3406 E engine. Free shipping, call 888-642-6460.
(0 reviews)
LATEST DIESEL UPDATES AND RESOURCES

How Regular Cylinder Head Maintenance Saves Thousands
The diesel cylinder head is one of the most critical—and expensive—components in any heavy-duty engine. It houses the valves, injectors, and rocker assemblies, manages airflow, and seals the combustion chamber under extreme heat and pressure. Yet despite its importance, cylinder head maintenance is one of the most neglected aspects of

Caterpillar Gold vs. Platinum Overhaul Kits
Caterpillar Gold vs. Platinum Overhaul Kits Complete Guide for CAT C15 & C15 Acert Choosing the right Caterpillar overhaul kit can make or break your rebuild project. Whether you’re running a C15, C15 ACERT, or another CAT engine, the choice between the Gold and Platinum kits determines not only how

Preventive Maintenance Tips for Heavy-Duty Diesel Engines
Heavy-duty diesel engines are built to endure — powering trucks, construction machines, and industrial fleets through long hours and extreme conditions. Yet even the toughest diesel engines rely on one thing: proper maintenance. Preventive maintenance isn’t optional; it’s the foundation of reliability, performance, and profit. A well-maintained engine runs cleaner,








