Cummins ISX15 Cylinder Head (SOHC) – New Complete | Industrial Injection
SKU: C45612
Product Description:
Cummins ISX15 Cylinder Head (New Complete SOHC)
If you're replacing a failed Cummins ISX15 cylinder head, you need a solution that eliminates guesswork and downtime—not another questionable reman.
This new complete ISX15 cylinder head from Industrial Injection is built for reliability in real-world heavy-duty applications. Fully assembled and ready for installation, it provides a dependable replacement for engines suffering from cracking, valve failure, or excessive wear.
Whether you're performing an in-frame overhaul or a full rebuild, this cylinder head restores proper combustion, airflow, and long-term engine performance.
Why Choose a New ISX15 Cylinder Head
Most replacement options on the market are remanufactured castings. That means reused material, unknown history, and potential for hidden issues.
This is not remanufactured.
-
Brand new casting
-
Fully assembled for faster install
-
Built to meet or exceed OEM specifications
-
Designed for consistent performance in heavy-duty use
When uptime matters, starting with a new foundation matters.
Built for Heavy-Duty Reliability
This Cummins ISX15 cylinder head is designed to handle the demands of:
-
Commercial trucking applications
-
Fleet maintenance and repair
-
Industrial and vocational equipment
-
High-load, long-run diesel environments
From daily drivers to working fleets, this head is built to perform under pressure.
What’s Included
This is a complete, ready-to-install assembly, including:
-
New cylinder head casting
-
Intake and exhaust valves
-
Valve springs
-
Valve retainers and keepers
-
Valve guides and seats
-
Pre-assembled valvetrain components
No sourcing extra parts. No assembly delays.
Common Reasons for ISX15 Cylinder Head Replacement
If you're here, chances are you're dealing with one of these:
-
Cracked cylinder head
-
Overheating damage
-
Valve or seat failure
-
Injector bore wear
-
Loss of compression or performance
Replacing the cylinder head restores proper sealing, airflow, and combustion efficiency—bringing the engine back to life.
Pair this cylinder head with our ISX15 Torque Lock Injector Cup Kit for added reliability in demanding applications.
ISX15 vs X15 Cylinder Head Compatibility
The Cummins ISX15 and X15 platforms are often referenced interchangeably in heavy-duty applications. This cylinder head is designed for ISX15 configurations, but always verify engine serial number and specifications before installation to ensure proper fitment.
Benefits of Replacing Your Cylinder Head
Installing a new ISX15 cylinder head helps:
-
Restore compression and engine efficiency
-
Ensure proper valve operation
-
Improve airflow and combustion performance
-
Reduce downtime during repairs
-
Extend engine service life
Fitment & Applications
Designed for Cummins ISX15 engines commonly found in:
-
Class 8 semi trucks (Kenworth, Peterbilt, Freightliner, etc.)
-
Commercial freight and fleet vehicles
-
Construction and vocational trucks
-
Industrial diesel equipment
Always verify engine serial number for compatibility.
Frequently Asked Questions
Is this Cummins ISX15 cylinder head new or remanufactured?
This is a brand new complete cylinder head, not remanufactured. It uses a new casting and components, eliminating the risks associated with reused or repaired cylinder heads.
What comes included with this ISX15 cylinder head?
This is a complete assembly that includes the cylinder head casting, valves, springs, retainers, keepers, guides, and seats. It comes pre-assembled to reduce installation time.
Will this fit my Cummins X15 engine?
The ISX15 and X15 platforms are often referenced together, but fitment can vary depending on engine configuration. Always verify your engine serial number to ensure compatibility before installation.
Do I need to install new injector cups with this cylinder head?
Injector cups are not included with the cylinder head. However, many builds include upgraded injector cups to address injector bore wear and improve long-term reliability in high-mileage or heavy-duty applications. We recommend pairing this with our ISX15 Torque Lock Injector Cup Kit.
What are common signs of a failing ISX15 cylinder head?
Common symptoms include loss of compression, overheating, coolant loss, white smoke, and poor engine performance. Cracks and valve issues are also common causes of failure.
Is this cylinder head ready to install?
Yes, this is a fully assembled cylinder head designed for direct replacement. However, proper installation procedures and verification of supporting components are recommended.
Why choose a new cylinder head instead of remanufactured?
A new cylinder head provides a fresh casting with no prior wear or heat cycles. This reduces the risk of hidden cracks, material fatigue, and premature failure compared to remanufactured options.
Read Carefully!
When you purchase a product from our website that has a core requirement, you have two options:
1. You choose to pay the core charge and we will ship the product right away, then once we receive the cores you will be refunded the core charge if your cores pass our inspection qualifications. This is the preferred choice and has the least delays.
2. You choose to send in your cores before we ship the product that was purchased. This choice has the risk of delayed shipment of your purchased product and our inventory is not guaranteed by the time we receive your cores. You will need to follow all of the instructions below as quickly as possible so that you can get your purchased product and we can receive the cores. When you choose this option you acknowledge that by the time we receive your cores, our inventory could have change and there could be a delay in your shipment.
Please return all cores to:
Industrial Injection Core Returns
2858 South 300 West
Salt Lake City, Utah 84115
INCLUDE RA# THAT WAS ISSUED AT TIME OF PURCHASE! If RA # is lost, please call Customer Service at (800) 955-0476. Have your original invoice at time of phone call to give all appropriate information for return.
Core return freight is the responsibility of the customer
FULL CREDIT WILL BE GIVEN WHEN:
In order to receive full core credit, your core(s) must be returned within 90 days from receipt of order. It must be as is “off the engine.” Full core credit will be given if core meets acceptance criteria. Cores that are damaged during shipment to Industrial Injection are the responsibility of the customer and their shipping company.
½ CORE CHARGE CREDIT WILL BE GIVEN WHEN:
- Slightly damaged housing or camshaft
- Missing parts such as FCA
No Core Credit issued when:
- Core is seized or hydraulic head is cracked
- Excessive damage ( Heavy use of Bio-diesel and rust are common causes for unacceptable core)
- Core is fire damaged
- Core is returned after 90 days/3months
Please do the following when returning a core:
- Make sure you have removed all fittings from your old unit
- Drain all fuel and oil from unit
- Package cores so that fuel and oil does not escape from the package
NOTE: packages that have fuel or oil residue on the outside of the box during shipping will not be delivered by UPS or the postal service which will cause delays.
- Please re-use boxes and bags that parts were shipped in originally. These boxes are UPS approved to reduce damage while being handled in freight.
- All shipping charges are the responsibility of the customer
- Please write on the box “Core Return” and have RA # clearly written on the outside of box
- Include copy of original invoice and RGA inside box
PLEASE RETAIN RA#, INVOICE # AND TRACKING NUMBER UNTIL CREDIT IS RECEIVED BY YOU. We do not research by customer name, only invoice # or RA #.
Questions About This Product?
You may also like
More from All Products
Recently viewed