Product Description
Cummins 5621817 OEM Cylinder Head Gasket Standard Thickness – ISB 6.7L (2007.5–2018)
The Cummins 5621817 OEM Cylinder Head Gasket is a genuine Cummins replacement gasket designed for 2007.5–2018 ISB 6.7L Cummins diesel engines. Manufactured to original equipment specifications, this standard-thickness head gasket provides the proper sealing performance between the engine block and cylinder head, helping maintain compression, coolant containment, and oil system integrity under demanding operating conditions.
Whether you're performing an OEM engine rebuild, replacing a failed head gasket, or refreshing a high-mileage 6.7L Cummins, the genuine Cummins 5621817 gasket delivers the fit, durability, and reliability expected from factory components. Designed specifically for Dodge Ram and Ram Heavy Duty trucks equipped with the 6.7L Cummins engine, this gasket helps ensure long-term sealing performance in both stock and lightly modified applications.
Features
- Genuine Cummins OEM cylinder head gasket
- Direct replacement for 6.7L ISB Cummins engines
- Standard factory thickness design
- Helps maintain proper combustion sealing
- Designed to prevent coolant and oil leakage
- OEM-quality materials and construction
- Ideal for engine rebuilds and repairs
- Engineered to Cummins factory specifications
- Supports stock and mild performance applications
- Reliable long-term sealing performance
Fitment
- 2007.5-2018 Dodge Ram 2500 6.7L Cummins
- 2007.5-2018 Dodge Ram 3500 6.7L Cummins
- 2007.5-2018 Ram 2500 6.7L Cummins
- 2007.5-2018 Ram 3500 6.7L Cummins
- 2007.5-2018 Ram 4500 6.7L Cummins
- 2007.5-2018 Ram 5500 6.7L Cummins
- ISB 6.7L Cummins diesel engines
Note: Always verify engine serial number, application, and piston protrusion specifications before ordering. Proper head bolt or head stud installation procedures should be followed according to Cummins service specifications.
What's Included
- Cummins 5621817 OEM Cylinder Head Gasket
Specifications
- Manufacturer: Cummins
- Part Number: 5621817
- Product Type: Cylinder Head Gasket
- Thickness: Standard OEM Thickness
- Engine Platform: ISB 6.7L Cummins
- Fuel Type: Diesel
- Application: OEM Replacement
- Installation Location: Cylinder Head to Engine Block
- Construction: Multi-Layer Steel (MLS) Design
- OEM Replacement: Yes
- Engine Years: 2007.5-2018
Cross Reference Numbers
5621817, Cummins 5621817, OEM 6.7 Cummins Head Gasket, ISB 6.7L Cylinder Head Gasket, Standard Thickness Head Gasket
FAQ
Is the Cummins 5621817 a genuine OEM gasket?
Yes. The 5621817 is a genuine Cummins OEM cylinder head gasket manufactured to factory specifications for ISB 6.7L engines.
What engines does this gasket fit?
This gasket is designed for 2007.5 through 2018 ISB 6.7L Cummins diesel engines found in Ram 2500, 3500, 4500, and 5500 trucks.
Is this a standard-thickness head gasket?
Yes. The Cummins 5621817 is the standard OEM thickness cylinder head gasket designed for factory engine configurations.
Should I replace head bolts when installing a new head gasket?
Cummins recommends following factory service procedures. Many technicians replace torque-to-yield fasteners or upgrade to head studs during major engine repairs.
Can this gasket be used on performance builds?
Yes. This gasket is commonly used on stock and mildly modified engines, although higher horsepower applications may require additional sealing solutions and upgraded fasteners.
Why choose a genuine Cummins head gasket?
Genuine Cummins gaskets are engineered specifically for the 6.7L platform, ensuring proper sealing, durability, and long-term reliability compared to many aftermarket alternatives.
