Product Description
The Cummins 4376090 OEM Upper Engine Gasket Kit is the complete top-end sealing solution for 2013–2018 ISB 6.7L Cummins engines. This genuine Cummins kit includes all required upper-engine gaskets and seals used during cylinder head service, injector replacement, EGR system repairs, and valve cover removal. Built to Cummins’ strict material and heat-resistance specifications, every gasket in this kit provides factory-level sealing performance for long-term durability under heavy towing, commercial duty, and high-temperature environments.
If you're refreshing a high-mileage 6.7L or repairing a top-end oil leak, the 4376090 gasket kit offers unmatched quality and reliability compared to aftermarket gasket sets.
Kit Contents (Typical)
- Valve cover gasket
- Injector tube seals & O-rings
- Upper intake gaskets
- EGR-related gaskets & seals (application dependent)
- Assorted top-end O-rings, washers, and sealing components
Note: Exact gasket contents vary by ESN and emissions configuration (Federal vs. California models). Always verify by engine serial number.
Fitment
- 2013–2018 Dodge Ram 2500 with 6.7L Cummins ISB
- 2013–2018 Dodge Ram 3500 with 6.7L Cummins ISB
- 2013–2018 Commercial / chassis cab 6.7L ISB Cummins
- 6.7L ISB engines requiring complete upper-end gasket replacement
Cross-Reference (Cummins-Only)
Pair this gasket kit with other genuine Cummins components for a full top-end service:
• Cummins 3900267 OEM Tappet Cover Bolt Grommet Seal
• Cummins 3900625 OEM Hex Flange Head Cap Screw
• Cummins 3915787 OEM Threaded Plug
FAQ
What does the Cummins 4376090 upper engine gasket kit include?
It includes all primary upper engine gaskets and seals such as valve cover gasket, injector seals, intake gaskets, and EGR sealing components (depending on ESN).
Do I need to verify this kit by engine serial number?
Yes. 6.7L ISB engines have variations by year, emissions package, and chassis type. ESN verification ensures proper gasket compatibility.
Is this kit needed when replacing injectors?
Yes — Cummins requires new injector tube seals and O-rings whenever injectors are removed or replaced.
Does this kit include a head gasket?
No. This is an upper engine gasket kit. Head gaskets are sold separately.
Is a valve cover gasket included?
Yes — the valve cover gasket is a standard component in the Cummins 4376090 kit.
Specifications for cummins 4376090
| Specification | Value |
|---|---|
| Brand | Cummins Genuine Parts |
| Part Number | 4376090 |
| Component Type | Upper Engine Gasket Kit – ISB 6.7L |
| UPC | Not Published |
| GTIN | Not Published |
| Cross Reference | Replaces ISB upper gasket sets depending on ESN |
| E-Codes | Varies by emissions variant (Federal / California) |
| Shipping Weight | 2.0–3.0 lbs (kit) |
| Package Dimensions | 15 x 10 x 2 in |
| Prop 65 Warning | Not Applicable |
