In the late 1800s and early 1900s, steam tractors were the primary method of agricultural development. But out in California, they had a problem: the incredibly heavy tractors kept sinking into the soft earth.
Continue reading C15 Engine SpotlightCategory: Caterpillar C15 ACERT Engine Parts: Complete Diesel Components and Rebuild Solutions
Diesel Engine Serial Numbers
Have you ever thought much about your ESN or why you might need to know it? Diesel engine serial numbers are vital to ensuring you’re getting the right fit for your engine.
Continue reading Diesel Engine Serial NumbersBrand New Caterpillar Cylinder Heads
Highway Heavy Parts is bringing you a new option when replacing Caterpillar Cylinder Heads. Now available for 3406E, C15 and C15 Acert engines is the brand new replacement cylinder head.
Continue reading Brand New Caterpillar Cylinder Heads3406E / C15 Fuel in Coolant, Engine Miss Explained
If you’re running a C15 or 3406E diesel engine, you may have experienced your engine missing. So, why does that happen?
Continue reading 3406E / C15 Fuel in Coolant, Engine Miss ExplainedCash For Cores | Caterpillar 3406E, C15 and C15 Acert wanted! | $175 Per Core Return – Call 844.447.1453 For Further Information

CATERPILLAR 3406E TECHNICAL SPECIFICATIONS, SERIAL NUMBERS, & PREFIXES
Are you curious about your Caterpillar 3406E diesel engine? Well, we’re taking you through this engine in detail, so wonder no more! Read on to learn the history of the engine, as well as some common failures you might experience.
Continue reading CATERPILLAR 3406E TECHNICAL SPECIFICATIONS, SERIAL NUMBERS, & PREFIXESWhat Parts We Offer; Caterpillar, Detroit Diesel and More
At Highway and Heavy Parts, it’s our mission to take the risk out of buying diesel engine parts for our customers. So we work hard to stock parts for a large range of applications.
Continue reading What Parts We Offer; Caterpillar, Detroit Diesel and MoreCaterpillar C15 Acert Performance Exhaust Manifold! | HHP’s Product Spotlight – Call 844.447.1453

Caterpillar C15, C15 Acert, 3406E Stage 2 Cylinder Head | HHP Carries Diesel Engine Parts – Call Us Today at 844.447.1453

Caterpillar C15, C15 Acert, 3406E Stage 2 Cylinder Head With Exhaust Inconel Valves | HHP Sells Diesel Engine Parts 844.447.1453

Symptoms of a Failing C15 ACERT Turbocharger
Your turbocharger is important to the overall health of your CAT C15 ACERT diesel engine. So, it’s important to replace it when something goes wrong.
Continue reading Symptoms of a Failing C15 ACERT TurbochargerCylinder Head For Caterpillar C15, C15 ACERT, & 3406E (20R2645)
Sometimes, you just have to replace your cylinder head. You might be rebuilding your engine, or completing a repair from a blown head gasket or cracks between your exhaust valves.
Continue reading Cylinder Head For Caterpillar C15, C15 ACERT, & 3406E (20R2645)Find genuine and aftermarket Caterpillar C15 ACERT engine parts for heavy-duty trucks, construction equipment, and industrial applications at Highway and Heavy Parts. Our comprehensive inventory includes cylinder heads, turbochargers, fuel injectors, pistons, and complete engine rebuild kits designed for reliable performance in demanding conditions. Whether you need replacement parts for preventive maintenance or major engine rebuilds, we stock high-quality components that meet or exceed Caterpillar specifications.
The Caterpillar C15 ACERT engine powered Class 8 trucks, excavators, dozers, and generator sets across transportation and construction industries from 2003 to 2009. Our parts are compatible with all C15 ACERT model variations and come with manufacturer warranties for genuine parts and quality guarantees for aftermarket alternatives. Professional mechanics, fleet managers, and equipment operators trust Highway and Heavy Parts for genuine Caterpillar quality and competitively priced aftermarket solutions.
Complete C15 ACERT Parts Inventory
What C15 ACERT parts are available at Highway and Heavy Parts?
Our extensive C15 ACERT inventory includes cylinder heads, engine blocks, turbochargers, fuel system components, cooling system parts, and complete engine rebuild kits. We carry both genuine Caterpillar parts and certified aftermarket alternatives from trusted manufacturers. Popular items include fuel injector sleeves, cylinder head gaskets, turbocharger assemblies, oil pumps, water pumps, and camshafts specifically designed for the C15 ACERT platform.
How do I identify the correct C15 ACERT engine parts?
C15 ACERT parts are identified using Caterpillar part numbers and engine serial numbers located on the engine block. The C15 ACERT was produced from 2003–2009 with specific part variations by model year and application. Our technical team can help verify compatibility using your engine serial number, ensuring you receive the exact components needed for your specific C15 ACERT configuration.
What equipment and applications use C15 ACERT engines?
C15 ACERT engines power Peterbilt, Kenworth, Freightliner, International, and other heavy-duty truck manufacturers, as well as Caterpillar construction equipment, including 330C and 336D excavators, 966G wheel loaders, and various industrial generator sets. These engines were designed for highway trucking, construction, mining, and stationary power generation applications requiring reliable diesel performance.
Why Choose Highway and Heavy Parts for C15 ACERT Components
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Genuine Caterpillar and Quality Aftermarket Options
We stock both genuine Caterpillar C15 ACERT parts and high-quality aftermarket alternatives. Our aftermarket parts are manufactured to OEM specifications, offering excellent value without compromising performance or reliability. All genuine parts come with Caterpillar warranties, while our aftermarket components include quality guarantees. -
Expert Technical Support and Compatibility Assistance
Our experienced technical team understands C15 ACERT engine specifications, common failure points, and engine rebuild requirements. Whether you’re performing routine maintenance, addressing specific engine problems, or planning a complete engine rebuild, we provide the expertise and parts needed for successful repairs. -
Fast Shipping and Professional Service
Highway and Heavy Parts maintains an extensive C15 ACERT inventory for quick order fulfillment. We understand downtime costs in commercial applications and work to get your equipment back in service quickly with reliable parts and professional customer service.
C15 ACERT Engine Specifications and Service Information
The Caterpillar C15 ACERT (Advanced Combustion Emission Reduction Technology) engine featured a displacement of 15.2 liters, producing between 425 to 550 horsepower depending on application and model year. Key service intervals include oil changes every 15,000 to 25,000 miles, fuel filter replacement, and turbocharger maintenance. Common service items available in our inventory include oil filters, fuel filters, air filters, belts, hoses, and gaskets specific to C15 ACERT requirements.
Understanding proper maintenance schedules and using quality replacement parts extends C15 ACERT engine life and maintains optimal performance. Our parts inventory supports both scheduled maintenance and unexpected repairs, helping keep your C15 ACERT-powered equipment operating efficiently.
Browse our complete selection of Caterpillar C15 ACERT engine parts, or contact our technical team for specific part identification and compatibility assistance. Highway and Heavy Parts – your trusted source for heavy-duty diesel engine components.






