Product Description
Interstate-McBee M-3922794 Turbo Oil Supply Line O-Ring – 98.5–18 5.9L/6.7L Cummins
OEM-style turbo oil supply line O-ring engineered to seal the oil feed line at the turbocharger inlet on 1998.5–2018 5.9L & 6.7L Cummins applications. Built to OE dimensions for a reliable, leak-free seal during turbo service or line replacement.
- Direct-fit replacement: Matches Cummins 3922794 specifications.
- Precise sizing: Nominal 0.351" ID x 0.072" cross-section (≈ 8.92 mm x 1.93 mm).
- Prevents oil seepage: Seals the turbocharger oil inlet to the feed line fitting.
- Aftermarket value: Interstate-McBee quality at a budget-friendly price point.
Specifications
| Brand / Part # | Interstate-McBee M-3922794 |
|---|---|
| OEM Cross-Reference | Cummins 3922794 (replaces 3883963) |
| Function | Turbocharger oil supply line to oil inlet seal |
| Nominal Size | 0.351" ID x 0.072" C/S (≈ 8.92 mm x 1.93 mm) |
| Material | Fuel/oil-resistant elastomer |
| Position | Turbocharger – oil inlet fitting |
Vehicle Fitment
Always verify by VIN/ESN and turbo configuration.
- Dodge Ram 2500/3500 – 5.9L Cummins 24V (ISB)
- 1998.5–2002 (24V)
- 2003–2007 (HPCR 5.9L)
- Ram 2500/3500 – 6.7L Cummins
- 2007.5–2018 (early 6.7L generations)
Install Notes
- Clean both groove and mating surface; lightly oil the new O-ring prior to assembly.
- Inspect the feed line, banjo/adapter, and turbo inlet for nicks or burrs.
- Follow the Cummins service manual torque specs for the oil inlet fitting/fasteners.
What’s Included
- (1) Turbo oil supply line O-ring
Why Buy From CPP Diesel
- Diesel-specialist fitment help for B-Series/ISB platforms
- Fast shipping, easy returns, and expert support
- Inventory curated to pair with common turbo and line service
FAQ
Where does this O-ring install?At the turbocharger oil inlet, sealing the oil feed line adapter/fitting to the turbo housing.
Will it fit both 5.9L and 6.7L Cummins?
Yes, it’s commonly used on 5.9L ISB (1998.5–2007) and 6.7L (2007.5–2018) Ram Cummins applications. Verify by ESN if in doubt.
What are the dimensions?
Nominal 0.351" inside diameter with 0.072" cross-section (≈ 8.92 mm x 1.93 mm).
Does it replace Cummins 3883963?
Yes—M-3922794 is equivalent to Cummins 3922794 and is commonly listed as replacing 3883963.
