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 HeadCategory: Blog – HHP Product Highlights
Keep 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 PartsMost 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
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 ThinkDinex Exhaust & Emission: OEM Alternative Solutions for Repair Shops
Anyone who’s managed a fleet of heavy-duty trucks knows the feeling—that sinking sensation when you get the call that another rig is down with emission system problems. It’s not just the immediate repair costs that hurt; it’s the lost revenue, the scrambling to cover routes, and the headaches that come with keeping everything EPA compliant.
Continue reading Dinex Exhaust & Emission: OEM Alternative Solutions for Repair ShopsCaterpillar C15, 3406E Turbocharger (177148): Boost, Failure, and What Happens When It Goes Bad
On a Caterpillar C15 or 3406E, the turbocharger isn’t just about power – it’s about air control, combustion efficiency, and engine balance.
When the turbo is working correctly, you get:
- Proper Air-to-Fuel Ratio
- Clean Combustion
- Consistent Power Under Load
When it starts to fail, everything changes – and it usually shows up under load first.
Continue reading Caterpillar C15, 3406E Turbocharger (177148): Boost, Failure, and What Happens When It Goes BadCaterpillar C15 ACERT Fuel Injector (10R1273): Symptoms, Failure Causes, and Replacement Guide
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 GuideCaterpillar 3406E Engine Rebuild Kit: What Actually Fails and What You Need to Fix It Right
The Caterpillar 3406E is known for durability – but when it starts to go, it usually doesn’t fail all at once.
It starts small.
A little blow-by.
A little oil consumption.
Maybe a slight drop in power under load.
Then it builds.
And before long, you’re not looking at a repair anymore – you’re looking at a full engine rebuild.
Continue reading Caterpillar 3406E Engine Rebuild Kit: What Actually Fails and What You Need to Fix It RightTurbocharger Cartridges (CHRA): How Jrone Turbo Cores Restore Performance Without Replacing the Full Turbo
When a turbocharger fails, the damage is often concentrated in one place:
The center housing rotating assembly (CHRA).
This is the core of the turbocharger – and in many cases, replacing it is the most efficient way to restore performance.
Continue reading Turbocharger Cartridges (CHRA): How Jrone Turbo Cores Restore Performance Without Replacing the Full Turbo
