Highway and Heavy Parts is excited to introduce our new diesel engine parts bundle sales promotion. It includes diesel cylinder heads and diesel engine add-ons for all major heavy-duty truck and equipment manufacturers. If you need a cylinder head for your Cummins, Caterpillar, Detroit Diesel, or other heavy-duty diesel engine, you can get everything you need to do the job right and save some money.
Continue reading Diesel Cylinder Head and Engine Rebuild Kit Bundle Sale
A Caterpillar C15 ACERT inframe rebuild should restore engine performance – not lead to another failure 50,000 miles later.
But that’s exactly what happens when critical measurements, tolerances, and supporting components are overlooked during the rebuild process.
Most early failures aren’t caused by the rebuild kit itself – they’re caused by what wasn’t checked before installation.
Continue reading Why Some Caterpillar C15 ACERT Inframe Rebuilds Fail Early (And How to Prevent It)Is your fuel efficiency down? Has the performance of your CAT C15 ACERT dropped?
Continue reading When to Replace Fuel Injectors in a Caterpillar C15 Acert
The exhaust manifold on a Caterpillar C15 ACERT does more than route exhaust gases.
It directly affects:
If the manifold is leaking, cracked, or restricting flow, the entire engine suffers.
And in ACERT engines, those problems show up fast.
Continue reading Caterpillar C15 ACERT Exhaust Manifold: Performance, Failure Symptoms, and Upgrade BenefitsHow do you pick the right diesel engine model? This is a challenging task. You’ll need plenty of information if you’re deciding between the Caterpillar 3406E, C15 ACERT, or C15 engine. And we have as much information as you can get to make an informed decision.
Continue reading Important Differences Between Caterpillar 3406E, C15, and C15 Acert Diesel EnginesPicking the right diesel engine model is no easy task. If you’re considering purchasing a Caterpillar 3406E, C15, or C15 ACERT, we have the information to help you make a decision.
Continue reading The Primary Differences Between Caterpillar 3406E, C15, and C15 Acert Diesel EnginesMost people know Highway and Heavy Parts for our over-the-road diesel expertise — but what many customers don’t realize is that we also supply a full line of marine-rated diesel engine parts for commercial vessels, charter fleets, fishing boats, and recreational boats across the country.
From Caterpillar Marine to Cummins Marine, Detroit Diesel Marine, John Deere Marine, and more, we carry high-quality replacement parts engineered to survive the extreme demands of marine environments: saltwater exposure, constant load, high heat, and long duty cycles.
Whether you’re keeping a single vessel on the water or maintaining an entire fleet, Highway and Heavy Parts has the reliable components you need – backed by expert support, fast shipping, and OEM-level performance.
And below, you’ll find direct links to our most popular marine-specific parts currently available.
Continue reading Keep Your Vessel Running Strong with Marine Diesel Parts from Highway and Heavy PartsIn 1993, Caterpillar began production on the 3406E, the last model engine in the 3406 series. While its predecessors –the A, B, and C– were fully or partially mechanical, the Caterpillar 3406E was the first successful fully electronic motor. The 3406E is usually found in Peterbilt and Freightliner vehicles.
Continue reading About The Caterpillar 3406E
Steam tractors became the go-to tool for agricultural development in the late 1800s/early 1900s. Although their use was widespread, this machinery wasn’t perfect; they didn’t work everywhere. In California, these immensely heavy tractors kept sinking into the soft earth.
Continue reading About the Caterpillar C15 Engine
Caterpillar C15 ACERT engines don’t fail the same way older single-turbo engines do.
They operate under higher cylinder pressures, increased exhaust temperatures, and more complex airflow management due to the ACERT twin turbo system.
When these engines reach rebuild time, the failure is usually tied to one thing:
Heat and pressure overwhelming the cylinder assembly.
This is what drives liner wear, ring failure, and ultimately the need for an inframe rebuild.
Continue reading Caterpillar C15 ACERT Inframe Rebuild Kit: Why Twin Turbo Heat and Cylinder Pressure Drive Rebuild Failures
If your Caterpillar C15 ACERT is running rough, smoking more than usual, or losing power under load, there’s a good chance the issue is in the fuel system.
More specifically – the fuel injectors.
And when an injector like the 10R1273 starts to fail, it doesn’t just affect performance. It can impact combustion, fuel economy, and long-term engine health.
Continue reading Caterpillar C15 ACERT Fuel Injector (10R1273): Symptoms, Failure Causes, and Replacement Guide
When Caterpillar stopped producing on-highway diesel engines in 2010, it didn’t mean those engines disappeared.
In fact, thousands of Caterpillar engines – especially the C15 – are still running today in fleets across the country.
So the real question isn’t just why Caterpillar left the market.
If you’re looking for a full breakdown of that decision, read Why Caterpillar Stopped Making On-Highway Diesel Engines to understand the emissions, engineering, and business factors behind it.
👉 It’s what that decision means for reliability, parts availability, and long-term ownership today.
Continue reading What Happened After Caterpillar Stopped Making Truck Engines (And What It Means for C15 Owners Today)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.
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.
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.
