When we talk about oil pumps, most people think of the component in the oil pan that supplies oil to the bearings and the crankshaft. But, with a high pressure system, you actually have two oil pumps on your engine.
Continue reading About the Bosch Reman Diesel Engine Oil PumpCategory: Blog – HHP Product Highlights
About the Cat C15/C15 ACERT/3406E Stage 3 Performance Diesel Engine Cylinder Head
Are you running a Caterpillar C15, C15 ACERT, or 3406E diesel engine? Maybe you’ve taken the time to change some of the components, like an upgraded turbocharger, a marine cam, bigger fuel injectors, or a high performance manifold.
Continue reading About the Cat C15/C15 ACERT/3406E Stage 3 Performance Diesel Engine Cylinder HeadAbout the Cat C15/C15 ACERT/3406E Stage 4 Performance Diesel Engine Cylinder Head
If you’ve spent the time and money upgrading components on your Caterpillar diesel engine, you’re going to want a cylinder head that can handle the increase in horsepower.
Continue reading About the Cat C15/C15 ACERT/3406E Stage 4 Performance Diesel Engine Cylinder HeadAbout the CAT C15/C15 ACERT/3406E Diesel Engine Cylinder Head
Are you looking for a new cylinder head? If so, you’re probably overhauling your engine. Or maybe you’ve got a blown head gasket, or cracks between your exhaust valves. These are all things that lead to cylinder head replacements.
Continue reading About the CAT C15/C15 ACERT/3406E Diesel Engine Cylinder HeadKeep Your Vessel Running Strong with Marine Diesel Parts from Highway and Heavy Parts
Most 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 PartsWhat to Know Before Buying Connecting Rod Bearings
Connecting rod bearings are one of the smallest components inside a diesel engine, but they play a massive role in long-term engine reliability.
Improper bearing selection, incorrect oil clearance, installation mistakes, or inaccurate measurements can quickly lead to oil pressure loss, crankshaft damage, metal contamination, bearing failure, and catastrophic engine damage.
That is why connecting rod bearing selection should never involve guesswork.
Proper bearing fitment depends heavily on crankshaft journal measurements, housing bore condition, oil clearance verification, engine application, and the condition of the surrounding rotating assembly components.
Quick Takeaway:
Connecting rod bearings must match the exact crankshaft journal size, oil clearance requirements, and engine application. Assuming “standard” always fits can lead to serious engine damage.
Connecting rod bearings must match the exact crankshaft journal size, oil clearance requirements, and engine application. Assuming “standard” always fits can lead to serious engine damage.
Continue reading What to Know Before Buying Connecting Rod Bearings
Most Popular Diesel Engine Parts of 2026
These are some of the most in-demand diesel engine components in 2026.
Each product below is selected based on:
- High application demand
- Proven reliability
- Common rebuild and repair needs
Hino Diesel Engines: Common Problems, Applications, and Replacement Parts
Hino trucks have built a strong presence in medium-duty commercial transportation, especially in local delivery, box truck, landscaping, municipal, refuse, and regional fleet applications.
For many businesses, Hino trucks are appealing because they are practical, maneuverable, and built around commercial-duty chassis configurations. They are often used where a full Class 8 tractor is unnecessary, but a pickup truck or light-duty van is not enough.
Like any diesel-powered commercial truck, however, Hino trucks are not maintenance-free.
As these trucks age, owners and repair shops often deal with turbocharger problems, aftertreatment issues, EGR-related faults, DPF restrictions, sensor failures, wiring concerns, and general emissions-system complaints. Some model years have also been affected by major emissions-related recalls and settlements, making accurate VIN verification especially important.
This guide explains where Hino trucks fit, what engines and systems are commonly involved, what problems owners may see, and how Highway and Heavy Parts can help source replacement parts when your Hino truck needs repair.
HHP Quick Takeaway
Hino trucks are common in medium-duty and regional fleet applications, but many repairs involve the same systems that challenge other modern diesel trucks: turbochargers, EGR components, DPF/DOC aftertreatment, sensors, wiring, cooling, and fuel system parts. If you need Hino diesel parts, call HHP with your VIN, engine information, and part number so our team can help verify fitment.
Continue reading Hino Diesel Engines: Common Problems, Applications, and Replacement Parts Hino trucks are common in medium-duty and regional fleet applications, but many repairs involve the same systems that challenge other modern diesel trucks: turbochargers, EGR components, DPF/DOC aftertreatment, sensors, wiring, cooling, and fuel system parts. If you need Hino diesel parts, call HHP with your VIN, engine information, and part number so our team can help verify fitment.
Caterpillar C15 ACERT Inframe Rebuild Kit: Why Twin Turbo Heat and Cylinder Pressure Drive Rebuild Failures
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 FailuresInternational/Navistar DT466E Inframe Rebuild Kit: Wet Sleeve Wear, HEUI System Impact, and What to Verify Before Installation
The International/Navistar DT466E is known for its durability – but like all wet sleeve diesel engines, its longevity depends on cooling system condition, liner integrity, and fuel system performance.
When these engines start showing signs like blow-by, coolant loss, or hard starting, the issue is rarely isolated.
It’s typically the result of cylinder wear, liner sealing issues, or HEUI system inefficiencies affecting combustion.
If you’re planning an inframe rebuild, understanding these failure points is critical to avoiding repeat repairs.
Continue reading International/Navistar DT466E Inframe Rebuild Kit: Wet Sleeve Wear, HEUI System Impact, and What to Verify Before InstallationCummins ISC 8.3L, ISL Short VGT Turbocharger (4352528RX)
Caterpillar C15 Fuel Injector Problems: Why Flow-Matched Injectors Matter More Than You Think
When a Caterpillar C15 starts showing signs of poor performance, fuel injectors are usually one of the first places technicians look.
But here’s where a lot of repairs go wrong:
The issue isn’t always a “bad injector.”
It’s often injector imbalance across the engine.
That’s where flow-matched injectors come into play. If you’re working on C15 engines in trucks, fleets, or heavy equipment, understanding this difference can prevent repeat failures and unnecessary downtime.
Continue reading Caterpillar C15 Fuel Injector Problems: Why Flow-Matched Injectors Matter More Than You Think
