Keyword Search

Posted on

Caterpillar C15 Engine, C15 Acert, 3406E Stage 3 Cylinder Head, Inconel Intake & Exhaust Valves

Caterpillar 3406E, C15, C15 Acert Stage 3 Cylinder Heads For Sale!

Continue reading Caterpillar C15 Engine, C15 Acert, 3406E Stage 3 Cylinder Head, Inconel Intake & Exhaust Valves

Posted on

Caterpillar C15 Engine, C15 Acert, 3406E Stage 2 Cylinder Head, Inconel Exhaust Valves Installed!

Check Out This Caterpillar C15 Engine, C15 Acert, 3406E Stage 2 Performance Cylinder Head

Continue reading Caterpillar C15 Engine, C15 Acert, 3406E Stage 2 Cylinder Head, Inconel Exhaust Valves Installed!

Posted on

Everything You Need To Know About The Caterpillar C15

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. One solution sometimes used was to lay wooden planks ahead of the tractors, but this drastically decreased speed and was expensive to do.

Continue reading Everything You Need To Know About The Caterpillar C15
Posted on

10 Common Reasons for Excessive Oil Consumption

Is your diesel engine consuming oil at a higher rate than normal? This could be due to normal engine wear, but it also might indicate an issue. Read on to find out more about what could be happening in your diesel engine!

Continue reading 10 Common Reasons for Excessive Oil Consumption
Posted on

Differences Between MLS Head Gaskets and Graphite Gaskets

When it comes to diesel engine gaskets, the material can make all the difference. Most current gaskets are made of a combination of metal and a composite material like graphite or asbestos, although asbestos has been losing popularity due to safety concerns (HHP only sells asbestos-free gaskets!).

Continue reading Differences Between MLS Head Gaskets and Graphite Gaskets
Posted on

7 Possible Causes Of Low Oil Pressure In Your Diesel Engine

So, you notice your oil pressure is low. Your automatic response might be to have your oil pump looked at, or to replace it altogether.

Continue reading 7 Possible Causes Of Low Oil Pressure In Your Diesel Engine
Posted on

Caterpillar C15 Cylinder Heads (20R2646)

Caterpillar C15 engines are very popular among our customers. We’ve noticed that over time we’re getting the same questions regarding cylinder head problems in this engine. In this post, we’re covering cylinder head symptoms, why it’s happening, and what solutions we have for you!

Continue reading Caterpillar C15 Cylinder Heads (20R2646)
Posted on

6 Common Issues with Caterpillar C15 ACERT Cylinder Heads

Over time we’ve noticed similar questions related to common issues with Caterpillar C15 ACERT cylinder heads. In this post we’re covering those symptoms, why it’s happening, and what solutions we have for you!

Continue reading 6 Common Issues with Caterpillar C15 ACERT Cylinder Heads
Posted on

How Does a Cylinder Head Work On A Diesel Engine?

Today we’re going to go over a little bit about cylinder heads. Before diving head first into the cylinder head market, its important to have an understanding of what you’re working with.

Continue reading How Does a Cylinder Head Work On A Diesel Engine?
Posted on

Camshaft Failure Causes

Is It Camshaft Lobe Wear Or Damage? We all know how important camshafts are to the function of your diesel engine, and when they fail it can spell big trouble. Whether you have a flat tappet or a roller camshaft, you’re at risk for one of the most common causes of camshaft issues: lobe wear or damage.

Continue reading Camshaft Failure Causes
Posted on

Caterpillar C15 Engine Rebuild Kit (3067460)

Diagnosing Your Caterpillar C15 Engine Issues

Having problems with your Caterpillar C15? A new engine rebuild kit from Highway and Heavy Parts may be just what you need!

Why the Engine Rebuild Kit Is Critical in Your Caterpillar C15

Your Caterpillar C15’s power and reliability start with the core parts deep inside the engine, where compression, cooling, and lubrication all come together. Over time, those internal components – pistons, liners, rings, and bearings – wear down and slowly lose their ability to seal, cool, and support the engine the way they should. Once that happens, you’ll start to see blow-by, oil consumption, fuel dilution, rising temperatures, and a noticeable drop in performance.

The longer those issues are ignored, the faster they snowball into bigger problems like scored liners, damaged pistons, or even a complete engine failure. That’s why a complete engine rebuild kit is so critical for a C15. Replacing everything at once restores the engine’s foundation, brings compression back to spec, and stops small issues from turning into expensive downtime.

Common Signs Your Caterpillar C15 Needs a New Engine Rebuild Kit

Not sure if it’s time for a rebuild? Look for these warning signs:

  • Loss of Power Under Load: Struggling to maintain speed, especially uphill or when loaded.
  • Poor Fuel Economy: Steady drop in MPG as ring sealing deteriorates.
  • Excessive Oil Consumption: Burning several quarts between oil changes indicates worn rings or seals.
  • Low Oil Pressure: Consistently below spec readings at idle or cruise suggest bearing clearance issues.
  • Blue or Gray Smoke: Oil passing into the combustion chamber, visible in the exhaust plume.
  • Unusual Engine Noise: Knocking or tapping from the lower end or valve train.

Waiting too long allows minor wear to cascade into major failures, but acting now can save thousands in repair costs.

Caterpillar C15 Engine Rebuild Kit (3067460): Built To Perform

We proudly carry the Caterpillar C15 Engine Rebuild Kit (3067460), a complete top‑end kit engineered to meet or exceed OE specifications.

What Sets This Rebuild Kit Apart:

  • Complete Cylinder Kits: 6 kits with pistons, liners, rings, retainers & seals – everything needed for uniform renewal.
  • Full Gasket & Seal Coverage: Upper gasket set, oil pan gasket, and all required seals for a leak‑free assembly.
  • Bearing Kits & Thrust Washers: Main and rod bearings plus thrust washers to restore proper crankshaft alignment.
  • Head Bolt & Thermostat Kits: New head bolts and thermostats are included to ensure correct torque retention and cooling system integrity.
  • Zero Core Charges & 2‑Year Unlimited Mileage Warranty: No hidden fees and total peace of mind from Highway and Heavy Parts.

Designed by top OEM and aftermarket specialists, this engine rebuild kit delivers consistent quality and reliability.

Installation Tips for Your Caterpillar C15 Engine Rebuild Kit

A successful rebuild depends on meticulous preparation and assembly. Follow these steps:

  1. Clean & Inspect the Block: Remove all old gasket material, carbon deposits, and debris. Check cylinder bores for taper and out‑of‑round; hone or line‑bore as needed.
  2. Measure & Select Components: Verify bearing clearances and confirm piston‑to‑liner tolerances. Ensure correct ring gap per Caterpillar specs.
  3. Install Cylinder Kits & Bearings: Fit liners squarely, torque head bolts in the proper sequence, and pre‑lubricate bearings with assembly lube.
  4. Replace Gaskets & Seals: Use the kit’s new gasket set – never reuse old seals. Pay special attention to the oil pan and head gasket surfaces.
  5. Torque All Fasteners: Adhere strictly to Detroit Diesel torque values and angles. Improper torque is one of the leading causes of leaks and cylinder distortion.
  6. Initial Break‑In Procedure: After assembly, run the engine at idle for 5 minutes to build oil pressure, then follow the manufacturer’s break‑in RPM schedule – gradually increasing load over the first 50 miles.

Proper execution of each step ensures optimal compression, oil control, and long‑term durability.

Order Your Caterpillar C15 Engine Rebuild Kit Today

Guaranteed for fit and function, HHP parts combine superior quality with unbeatable value, backed by our ASE‑certified technicians and a 2‑year unlimited mileage warranty. Minimize downtime and maximize engine life—order your Caterpillar C15 Engine Rebuild Kit (3067460) now!

Call 844‑304‑7688 or visit highwayandheavyparts.com to place your order today.

From diagnosis through delivery, we’re Highway and Heavy Parts.

Posted on

C15 Acert Diesel Cylinder Head Problems, Caterpillar Diesel Engine, C15, C-15 Maintenance, Repair

C15 Acert Cylinder Head Problems? HHP Can Help!

Continue reading C15 Acert Diesel Cylinder Head Problems, Caterpillar Diesel Engine, C15, C-15 Maintenance, Repair

Learn about premium Caterpillar C15 engine parts for Class 8 trucks, heavy equipment, and industrial applications at Highway and Heavy Parts. Our inventory includes cylinder heads, camshafts, pistons, turbochargers, and complete engine rebuild kits engineered to meet or exceed OEM standards. Whether you’re maintaining a legacy C15 or performing a full engine rebuild, we offer parts designed for long-lasting performance in demanding diesel environments.

The Caterpillar C15 (pre-ACERT) engine, introduced in the early 2000s, is known for its simplicity and durability. With a 15.2L displacement and horsepower ratings ranging from 435 to 550 HP, it was a workhorse in over-the-road trucks and vocational equipment. Our C15 parts are compatible with popular models across Freightliner, Kenworth, Peterbilt, and Caterpillar construction equipment.

What C15 Engine Parts Are Available?

We stock engine blocks, cylinder kits, engine bearings, camshafts, fuel system components, turbochargers, oil pumps, gaskets, and complete C15 engine rebuild kits. Choose from genuine Caterpillar parts and high-quality aftermarket alternatives designed for direct-fit installation.

How Do I Identify Parts for a C15 Engine?

Use your engine’s serial number (prefixes like 6NZ or MBN) located on the engine data plate. Our technical team can help verify compatibility to ensure you get the right components the first time.

Why Choose HHP for C15 Parts?

  • Industry-Best Warranties on Aftermarket Components
  • Fast Shipping from Strategically Stocked Warehouses
  • In-House Diesel Technicians for Expert Support

The Caterpillar C15 remains one of the most trusted engines in the diesel world. Maintain its performance with trusted parts from HHP.

FAQs for the Caterpillar C15

  1. What’s the difference between the C15 and C15 ACERT engines?
    The C15 is the original pre-ACERT version of Caterpillar’s 15.2L engine, known for mechanical simplicity and reliability. The ACERT version added emissions components and electronics for EPA compliance.
  2. What serial numbers are associated with the C15 engine?
    Common serial number prefixes include 6NZ, MBN, and 1LW. These help identify part compatibility, especially for engine rebuild kits and fuel system components.
  3. Can I use aftermarket parts in a C15 engine rebuild?
    Yes, high-quality aftermarket parts manufactured to OEM specifications are available and widely used for C15 engine rebuilds. They offer cost savings without compromising reliability.
  4. What trucks use the C15 engine?
    The C15 engine was used in Freightliner, Peterbilt, Kenworth, and International Class 8 trucks, as well as in some Caterpillar construction equipment.
  5. How often should C15 components like turbos and injectors be replaced?
    Fuel injectors typically last 300,000 to 400,000 miles, while turbochargers may last 500,000 miles or more, depending on load and maintenance.