4089790 4090037 3800853 UPPER HEAD GASKET GASKET SET KIT FOR 5.9L CUMMINS 24V

The kit provides all required upper engine sealing components necessary during:

• Cylinder head removal
• Head gasket replacement
• Valve train service
• Injector service
• Top-end overhaul

The product is designed to adhere to OEM standards for compression sealing, coolant containment, and oil passage integrity.

This product is perfect for stock rebuilds, towing applications, fleet maintenance, and performance refresh.

• Cylinder Head Gasket

• Intake Manifold Gasket

• Exhaust Manifold Gasket

• Valve Cover Gaskets

• Injector Seals and Copper Washers

• Valve Stem Seals

• Thermostat Housing Gasket

• Water Outlet Gasket

• Rocker Housing Seals

• Oil Passage O-Rings

• Coolant Passage O-Rings

• Miscellaneous Upper Engine Seals

Note: Head bolts or studs are not included unless specifically stated.

Dodge RAM 2500 / 3500

1998.5–2007 models (verify engine type)

Freightliner FL60 / FL70

Freightliner M2 early ISB

International 4000 series

Sterling Acterra

Ford F650/F750 (ISB equipped)

Blue Bird buses

Thomas Built buses

Generator sets

Industrial pump drives

Construction equipment

Agricultural equipment using ISB 5.9

Dodge RAM Trucks

• 1998.5–2002 Dodge Ram 2500 5.9L 24V (VP44)
• 1998.5–2002 Dodge Ram 3500 5.9L 24V (VP44)
• 2003–2007 Dodge Ram 2500 5.9L 24V (Common Rail)
• 2003–2007 Dodge Ram 3500 5.9L 24V (Common Rail)

Medium Duty Trucks

• Freightliner FL60 / FL70 (ISB equipped)
• Freightliner M2 (early ISB 5.9 applications)
• International 4000 Series (ISB 5.9)
• Sterling Acterra 5.9 ISB
• Ford F650 / F750 (Cummins ISB equipped models)

Bus Applications

• Blue Bird buses with 5.9L ISB
• Thomas Built buses with 5.9L ISB

Industrial & Commercial Applications

• Generator sets using ISB 5.9
• Agricultural equipment with ISB platform
• Construction equipment powered by ISB 5.9
• Pump drive engines
• Compressor power units
• Industrial stationary engines

Marine (Verify First)

• Commercial marine conversions using ISB 5.9 24V
Engine CPL and cooling configuration must be verified.

Does NOT Fit:

• 5.9L 12 Valve (6BT 1989–1998)
• 6.7L Cummins
• ISM / ISX / N14 / M11
• QSB 6.7

Important:

Always verify by:
• Engine Serial Number (ESN)
• CPL number
• 24-valve configuration

If unsure, message us with the ESN before ordering.

• Coolant pushing from overflow tank
• White smoke at startup
• Oil in coolant
• External coolant leak at head joint
• Loss of compression
• Overheating under load
• Boost leakage at intake manifold

24V engines under heavy towing or high boost are more prone to head gasket stress.

Does NOT fit:

5.9L 12 Valve (6BT 1989–1998)
6.7L Cummins
ISM 11L
ISX
N14
M11

Always verify:

• Engine Serial Number (ESN)
• 24-valve cylinder head
• Gasket thickness

If unsure, send the ESN before ordering.

1.    Check cylinder head flatness

2.    Inspect the block deck surface.

3.    Verify liner protrusion if applicable.

4.    Flush cooling system

5.    Replace thermostat

6.    Consider upgrading to head studs for high-load applications.

For performance or towing builds, stud conversion significantly improves sealing reliability.