Product Description
The CUMMINS 3999820 OEM CRANKCASE BREATHER GASKET (CCV FILTER GASKET) is designed for 2007.5–2024 6.7L Cummins ISB diesel engines. This genuine Cummins gasket provides a proper seal between the crankcase breather assembly and related CCV system components to help maintain correct crankcase ventilation performance.
Use this gasket when servicing the crankcase ventilation filter, replacing the CCV assembly, repairing oil leaks, or performing routine maintenance on the crankcase breather system. Always verify fitment by engine serial number before ordering.
FEATURES
- Genuine Cummins OEM crankcase breather gasket
- Designed for CCV filter and breather service
- Helps maintain proper sealing of the crankcase ventilation system
- Direct-fit replacement for applicable 6.7L Cummins engines
- Supports proper crankcase pressure management
- Ideal for maintenance and repair work
FITMENT
- 2007.5–2024 Ram 2500 6.7L Cummins
- 2007.5–2024 Ram 3500 6.7L Cummins
- 2007.5–2024 Ram 4500 6.7L Cummins
- 2007.5–2024 Ram 5500 6.7L Cummins
- Select Cummins ISB 6.7L commercial and industrial applications
WHAT'S INCLUDED
- 1 Cummins 3999820 OEM Crankcase Breather Gasket
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3999820
- Cummins CCV Filter Assemblies
- Cummins Crankcase Breather Components
- Cummins Valve Cover Service Components
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3999820
- Part Type: Crankcase Breather Gasket
- Alternate Description: CCV Filter Gasket
- Engine Compatibility: 6.7L Cummins ISB
- Fitment Years: 2007.5–2024
- Vehicle Application: Ram 2500, 3500, 4500, and 5500
- Condition: New OEM Cummins
- Installation Type: Direct Replacement
FAQ
Will this gasket fit my truck?
This gasket fits many 2007.5–2024 Ram trucks equipped with the 6.7L Cummins engine. Always verify fitment using your engine serial number before ordering.
Is this a genuine Cummins gasket?
Yes. Cummins 3999820 is a genuine OEM Cummins crankcase breather gasket.
What does this gasket seal?
This gasket helps seal the crankcase breather and CCV filter assembly to prevent oil seepage and maintain proper crankcase ventilation system operation.
Should this gasket be replaced when servicing the CCV filter?
Yes. Replacing the gasket during crankcase breather or CCV filter service is recommended to help ensure a proper seal and prevent leaks.
What are the signs of a failed breather gasket?
Common symptoms include oil residue around the breather assembly, oil leaks, or evidence of crankcase ventilation system seepage.
Do I need any related parts?
Inspect the CCV filter, breather housing, mounting hardware, seals, and surrounding ventilation components during service and replace worn parts as necessary.
