Product Description
The Cummins 5265108 OEM Crankcase Breather Vent Tube is the factory-correct breather hose used on 2003–2005 Dodge Ram 2500/3500 trucks equipped with the 5.9L 24-Valve ISB Cummins. This tube carries crankcase vapors from the breather assembly downward and away from the engine, preventing contamination, oil residue buildup, and improper crankcase ventilation. As part of the emissions and ventilation system, a genuine Cummins replacement ensures proper routing, correct internal diameter, and long-term durability.
If your existing vent tube is cracked, swollen, clogged, or leaking oil residue, the 5265108 OEM breather tube restores correct crankcase evacuation and helps maintain engine cleanliness and proper crankcase pressure.
Fitment
- 2003 Dodge Ram 2500/3500 – 5.9L Cummins (ISB)
- 2004 Dodge Ram 2500/3500 – 5.9L Cummins (ISB)
- 2005 Dodge Ram 2500/3500 – 5.9L Cummins (ISB)
- Applies to engines using the OEM crankcase breather mounted on the engine cover
Note: 2006–2007 engines use updated breather hardware; verify by ESN for accuracy.
Cross-Reference (Cummins-Only)
Related Cummins crankcase ventilation & hardware components:
• Cummins 3915787 Threaded Plug – Oil System
• Cummins 3909395 Spring Hose Clamp
• Cummins 3900267 Tappet Cover Bolt Grommet Seal
FAQ
What does the Cummins 5265108 vent tube do?
This tube routes crankcase vapors safely away from the engine to maintain correct crankcase pressure and reduce oil residue buildup.
How do I know if this vent tube needs replacement?
Common symptoms include cracking, oil seepage, clogging, swelling, or excessive vapors around the breather assembly.
Does this fit 2006–2007 5.9L Cummins trucks?
No. Later 5.9L engines use a different breather design. This 5265108 OEM tube fits 2003–2005 only unless ESN confirms otherwise.
Should the crankcase breather filter be replaced at the same time?
Yes. Replacing the breather filter and tube together ensures proper ventilation and prevents restriction issues.
Specifications for cummins 5265108
| Specification | Value |
|---|---|
| Brand | Cummins Genuine Parts |
| Part Number | 5265108 |
| Component Type | Crankcase Breather Vent Tube |
| UPC | Not Published |
| GTIN | Not Published |
| Cross Reference | Used with OEM crankcase breather assembly on 5.9L ISB |
| E-Codes | N/A |
| Shipping Weight | 0.30 lbs |
| Package Dimensions | 12 x 6 x 4 in |
| Prop 65 Warning | Not Applicable |
