Product Description
Interstate-McBee M-4376090 Upper Engine Gasket Set – 2013–2018 6.7L Cummins
Complete top-end gasket and seal kit for the 2013–2018 Ram 2500/3500 (and chassis cab 3500/4500/5500) with the 6.7L Cummins ISB. Built to OE form, fit, and function for reliable sealing during cylinder head or valve-train service. Sold as one set.
- Direct replacement: Aftermarket equivalent to Cummins reference 4376090.
- Top-end service kit: Designed for cylinder head removal/installation and upper engine reseal work.
- Dependable materials: Multi-layer steel and molded rubber components as application requires.
- Value: Interstate-McBee quality without OEM-box pricing.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-4376090 |
| OEM Reference | Cummins 4376090 |
| Engine | 6.7L Cummins ISB (24-valve) |
| Years | 2013–2018 |
| Sold As | Kit (Upper Engine Gasket Set) |
| Position | Upper/Top-End |
What’s Typically Included*
*Contents may vary by engine build/ESN. Always verify against your engine serial number.
- Valve cover perimeter gasket(s)
- Intake manifold gasket(s)
- Exhaust manifold gasket(s)
- EGR/intake sealing rings and o-rings (as applicable)
- Injector sealing washers and/or o-rings (as applicable)
- Thermostat housing and water neck gaskets
- Miscellaneous coolant/oil port o-rings for the upper engine
Vehicle Fitment
Verify fitment by VIN or Cummins ESN for best results.
- Ram 2500/3500 – 6.7L Cummins ISB (2013–2018)
- Ram 3500/4500/5500 Chassis Cab – 6.7L Cummins ISB (2013–2018)
- Additional ISB6.7 on-highway/off-highway applications where Cummins 4376090 is specified (confirm by ESN).
Notes & Best Practices
- Clean and inspect sealing surfaces; do not use abrasives that remove base metal.
- Follow proper torque specs and sequences from the Cummins service manual.
- Replace single-use fasteners as required (e.g., torque-to-yield head bolts if applicable to your build).
- Lightly oil o-rings; install gaskets dry unless the service manual specifies sealant.
Recommended/Related Parts
- Cylinder head bolts or studs (torque-to-yield bolts should not be reused)
- Lower/bottom-end gasket set (for full reseal jobs)
- Fresh coolant and engine oil/filter after major sealing work
FAQ
Does this kit include a head gasket?
This listing is for an upper engine gasket set focused on top-end components. Some builds package the head gasket separately. Check the kit contents against your ESN or contact us to confirm whether a head gasket is included in your specific M-4376090 set.
Will this fit my 2013–2018 Ram 6.7L?
Yes—this set is intended for the 6.7L Cummins ISB in 2013–2018 Ram 2500/3500 and chassis-cab models. For non-Ram or industrial ISB6.7, verify by ESN.
Do I need any sealants?
Use only where the Cummins service manual calls for it (e.g., specific joints or corners). Most gaskets install dry.
