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

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

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