If you’re replacing the top end on a Cummins ISX, this upper engine gasket set is one of the most critical parts you’ll install. When the head comes off – or you’re addressing signs of upper-end leaks – you can’t afford to skimp on sealing integrity.
Engineered to Meet Fitment & Reliability Standards
This upper gasket set is designed to fit Cummins ISX applications precisely – no guessing on compatibility.
Every piece you need for the head and associated upper-end interfaces is included in one kit:
- Cylinder Head Gasket(s)
- Camshaft Cover Seals
- Exhaust Manifold Gaskets
- O-Ring Seals and More
This isn’t a “partial set.” It’s the right kit for complete top-end sealing. Highway and Heavy Parts backs this set with technical support and fitment verification – so you order confidently the first time.
Why This Gasket Set Matters for Your Cummins ISX
When an upper gasket fails or is compromised, common consequences include:
- Coolant Entering Oil Passages
- High-Pressure Combustion Gas Leakage
- Internal Overheating Without External Leaks
- Unstable Coolant Pressure and Temperature Fluctuation
This gasket set ensures the sealing surfaces on the head, turbo flange, and coolant/oil passages do exactly what they’re engineered to do – maintain pressure and isolation under load.
Competitive Pricing & Availability
We understand downtime hits your bottom line. That’s why we price upper engine gasket sets for Cummins ISX competitively – without sacrificing fitment or quality. Because HHP stocks parts specifically for heavy-duty diesel engines, your order is more likely to ship quickly – reducing the time your engine sits idle.
Upper Engine Gasket Set – What You Need to Know
In the video, we walk through:
- What’s Included in the Cummins ISX Upper Engine Gasket Set
- Why Replacing the Entire Kit Matters — Not Just the Head Gasket
- Common Symptoms that Indicate Upper Gasket Failure
- Why Reusing Old Gaskets Leads to Repeat Failures
Don’t Replace the Head Without Replacing the Gaskets
One of the biggest mistakes we see? Replacing a cylinder head – but trying to reuse old gaskets or mixing partial kits.
Under ISX operating pressures, compromised sealing surfaces can quickly lead to:
- Coolant Contamination
- Combustion Pressure Loss
- Overheating
- Premature Failure
Related Cummins ISX Resources
- Cummins ISX Engine Spotlight
- Cummins Diesel Engine Serial Numbers
- Complete ISX Problems and Failures
Why Order Your Cummins ISX Upper Gasket Set from Highway and Heavy Parts?
At Highway and Heavy Parts, we:
- Verify Fitment Before Shipping
- Help Confirm Compatibility by Engine Serial Number
- Offer Competitive Pricing on ISX Gasket Kits
- Provide Technical Support When Needed
If you’re unsure whether 4376104 is correct for your ISX configuration, call us first. We’ll verify it.
Order now by calling 844-304-7688 or visit us online at highwayandheavyparts.com.
From diagnosis, through delivery, we’re Highway and Heavy Parts!
FAQs for the Cummins ISX Upper Engine Gasket Set
1. What are the signs that my Cummins ISX engine needs a head gasket replacement?
Signs include overheating, thick white steam rolling from the exhaust, and strange discoloration of the oil.
2. Why is replacing the head gasket important for my Cummins ISX engine?
Replacing the head gasket ensures proper sealing of critical engine components, preventing coolant leaks, engine overheating, and potential long-term damage.
3. What does the Upper Engine Gasket Set for my Cummins ISX include?
The set includes all the necessary gaskets for the upper engine, designed to withstand high pressure, temperature variations, and contact with fluids to ensure proper engine sealing.
4. What makes the Upper Engine Gasket Set from Highway and Heavy Parts a high-quality choice for my Cummins ISX?
The gaskets are made from 100% asbestos-free material, chosen for their durability and ability to perform under the demanding conditions of your Cummins ISX engine.
5. What warranty comes with the Upper Engine Gasket Set for my Cummins ISX from Highway and Heavy Parts?
The gasket set is backed by a 2-year warranty, ensuring long-term reliability and peace of mind.
