CUMMINS 5271251 OEM CYLINDER HEAD GASKET (+.020 THICKNESS) – ISB/QSB 6.7L (2007.5–2018 RAM; ESN VERIFY)

Product Description

The CUMMINS 5271251 OEM CYLINDER HEAD GASKET (+.020 THICKNESS) is designed for 2007.5–2018 6.7L Cummins ISB and QSB diesel engines. This genuine Cummins cylinder head gasket provides a reliable seal between the engine block and cylinder head while maintaining proper compression, coolant control, and oil sealing.

Use this gasket during cylinder head replacement, engine overhaul, head stud installation, or major engine repair. This is a +.020 thickness gasket and proper application should always be verified using the engine serial number (ESN) before ordering.

FEATURES

• Genuine Cummins OEM cylinder head gasket
• +.020 thickness specification
• Designed for 6.7L ISB and QSB Cummins engines
• Helps maintain proper compression and sealing
• Supports coolant and oil passage sealing
• Ideal for engine rebuilds, repairs, and cylinder head service

FITMENT

• 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
• Select Cummins ISB and QSB 6.7L industrial applications
• Engine Serial Number verification recommended before ordering

WHAT'S INCLUDED

• 1 Cummins 5271251 OEM Cylinder Head Gasket (+.020 Thickness)

CROSS-REFERENCE AND RELATED PRODUCTS

• Cummins 5271251
• Cummins Cylinder Head Bolt Sets
• Cummins Head Stud Kits
• Cummins Upper Engine Gasket Components

SPECIFICATIONS

• Manufacturer: Cummins
• Part Number: 5271251
• Part Type: Cylinder Head Gasket
• Thickness: +.020
• Engine Compatibility: 6.7L Cummins ISB / QSB
• Fitment Years: 2007.5–2018
• Vehicle Application: Ram 2500, 3500, 4500, 5500
• Condition: New OEM Cummins
• Installation Type: Direct Replacement
• ESN Verification Recommended: Yes

FAQ

Will this head gasket fit my truck?

This gasket fits many 2007.5–2018 6.7L Cummins applications. Because multiple gasket thicknesses may exist, engine serial number verification is recommended before ordering.

Is this a genuine Cummins head gasket?

Yes. Cummins 5271251 is a genuine OEM cylinder head gasket manufactured to Cummins specifications.

What does +.020 thickness mean?

The +.020 designation identifies the gasket thickness used for specific engine build and service requirements. Always verify the correct thickness before installation.

When should a cylinder head gasket be replaced?

Head gaskets should be replaced whenever the cylinder head is removed and during major engine repairs or rebuilds.

Can this gasket be reused?

No. Cylinder head gaskets are intended for one-time use and should always be replaced during service.

Do I need any related parts?

Inspect head bolts or studs, intake and exhaust manifold gaskets, valve cover gaskets, coolant passages, and related sealing components during installation and replace as necessary.