Product Description
CUMMINS 4931455 OEM VALVE COVER W/ BREATHER ASSEMBLY – RAM 5.9L (2006–2007)
The genuine CUMMINS 4931455 OEM valve cover with breather assembly is the correct factory replacement for late 5.9L ISB engines used in 2006–2007 Dodge Ram 2500 and 3500 trucks. This updated design includes the integrated crankcase ventilation (CCV) breather, ensuring proper filtration of blow-by gases and maintaining the correct pressure balance inside the engine. If you’re experiencing oil leaks around the valve cover, excessive crankcase pressure, or a failing breather system, replacing the assembly with a real Cummins part restores OE sealing and CCV performance.
Cracked plastic, worn breather elements, and loose grommets are common issues on high-mileage ISB engines. This complete 4931455 assembly provides a drop-in solution that meets all Cummins durability, heat, and pressure standards. Pair it with new gaskets and related hardware for a leak-free, long-lasting repair.
Key Features
- Genuine Cummins OEM valve cover and breather assembly.
- Restores crankcase ventilation (CCV) functionality for proper pressure regulation.
- Direct-fit replacement for 2006–2007 Ram 5.9L ISB engines.
- High-strength composite construction to reduce weight and resist heat cycling.
- Prevents oil leaks and contamination of the engine bay.
Fitment Details
- Engine: 5.9L Cummins ISB (Common Rail)
- Years: 2006–2007
- Applications: Dodge Ram 2500 & 3500
- Notes: Not compatible with earlier 24-valve (1998.5–2002) or 2003–2005 CR engines.
Cross-Reference & Companion Cummins Parts
Complete your repair with these related genuine Cummins parts available at CPP Diesel:
- CUMMINS 4980081 VALVE COVER GASKET – recommended anytime the valve cover is removed.
- CUMMINS 3969988 BREATHER ELEMENT – the serviceable CCV element for 5.9L engines.
- CUMMINS 5260630 BREATHER HOSE – ensures proper routing of crankcase vapors.
- VIEW ALL GENUINE CUMMINS PARTS
Common Cummins cross-reference numbers: 4931455, 4931455NX (reman), 3977182 (related breather components).
Installation Notes
- Always replace the valve cover gasket when installing a new cover.
- Inspect the breather hose and replace if brittle or oil-saturated.
- Torque fasteners evenly to avoid warping.
- Verify CCV system flow after installation.
Specifications for cummins 4931455
| Attribute | Value |
|---|---|
| Brand | Cummins (Genuine OEM) |
| Cummins Part Number | 4931455 |
| Alternate / Supersession | 4931455NX (reman), 3977182 (related CCV parts) |
| Function | Valve cover with integrated crankcase breather assembly |
| Engine Compatibility | 5.9L Cummins ISB (2006–2007) |
| Vehicle Fitment | 2006–2007 Dodge Ram 2500 / 3500 |
| UPC | 190910285356 |
| GTIN | 190910285356 |
| Shipping Weight | Approx. 4.8 lbs |
| Shipping Method | Standard ground; expedited options available |
| E-Codes / Emissions | Part of crankcase ventilation system (non-emissions critical) |
| Prop 65 Warning | WARNING: This product may expose you to chemicals known to the State of California to cause cancer and reproductive harm. See www.P65Warnings.ca.gov. |
| Country of Origin | As labeled by Cummins (varies by lot) |
Frequently Asked Questions
WILL THIS FIT MY 2006 OR 2007 5.9L CUMMINS?
Yes—CUMMINS 4931455 fits 5.9L ISB engines used specifically in 2006 and 2007 Ram 2500/3500 trucks. It does not fit earlier or 6.7L engines.
DOES THIS INCLUDE THE CRANKCASE BREATHER?
Yes. This is the complete valve cover assembly with the integrated CCV breather already installed.
SHOULD I REPLACE THE BREATHER ELEMENT?
If yours is oil-soaked or overdue for service, consider replacing it with the CUMMINS 3969988 breather element.
WHAT GASKET DO I NEED?
The correct gasket is the CUMMINS 4980081 valve cover gasket. Always replace the gasket when installing a new cover.
IS THIS AN OEM CUMMINS PART?
Yes—CPP Diesel sells only genuine Cummins OEM valve covers and breather components.
