Product Description
Cummins 4931455 — Valve Cover with Integrated Breather Assembly (5.9L 2006–2007)
MPN: 4931455 | Also Known As: valve cover, rocker/valve cover w/ CCV | Includes: Integrated crankcase ventilation (CCV) / oil separator (non-serviceable)
Why This Part
- ✓ OE assembly for the 2006–2007 5.9L Cummins with integrated CCV/oil separator.
- ✓ Direct-fit replacement—restores proper crankcase ventilation and sealing.
- ✓ Non-serviceable filter design on ’06–’07 means the full cover is the correct fix.
- ✓ Durable OE construction; built to Cummins specifications.
Quick Specs
| Type | Valve cover with integrated CCV/breather (non-serviceable) |
|---|---|
| OE Part # | 4931455 |
| Qty Required | 1 per engine (sold individually) |
| Notes | Replace perimeter gasket/fasteners as needed; verify by VIN/ESN |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 2006–2007 | Ram 5.9L ISB (24V Common-Rail) | Ram 2500/3500 |
Industrial/Off-Highway: Also used on select ISB/QSB Stage 3B applications; verify by Engine Serial Number (ESN).
Often Paired With
- Perimeter valve cover gasket & fasteners: replace if damaged (verify P/N by VIN/ESN)
- Rocker box/upper gasket service items if leakage is present
- Fresh oil & filter after contamination-related repairs
What’s In The Box
- (1) Genuine Cummins Valve Cover with Integrated Breather (4931455)
- Gaskets/fasteners sold separately
Install Tips
- Clean sealing surfaces thoroughly; replace gasket if hardened or damaged.
- Tighten fasteners in sequence to factory torque; check for oil seepage after warm-up.
- If crankcase pressure faults persist, inspect hoses/ports and confirm correct routing.
FAQ
WILL THIS FIT MY 2006–2007 5.9L CUMMINS RAM?Yes—this is the OE valve cover/breather assembly for 2006–2007 5.9L ISB Ram 2500/3500. Always verify by VIN/ESN.
CAN I JUST REPLACE THE CCV/BREATHER FILTER ON ’06–’07?No—the ’06–’07 5.9L uses a non-serviceable integrated CCV assembly in the plastic valve cover. Replacement is the complete cover.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 4931455 built to factory specifications.
WHAT ABOUT INDUSTRIAL/ISB/QSB USES?4931455 is also used on select Stage 3B ISB/QSB engines. For equipment applications, confirm by ESN before ordering.
DOES THIS INCLUDE GASKETS OR HARDWARE?No—gaskets/fasteners are sold separately. Replace any hardened or damaged seals during installation.
