CUMMINS 3919687 OEM HX35 TURBO OIL INLET FITTING (FEMALE CONNECTOR) – RAM 5.9L 12V/24V

Product Description

The Cummins 3919687 OEM HX35 Turbo Oil Inlet Fitting is the factory-correct female oil feed connector used on Holset HX35 turbochargers found on 1994–2002 5.9L Cummins 12V & 24V engines. This fitting ensures proper oil flow, correct thread engagement, and leak-free sealing between the turbocharger and the oil supply line. Using a genuine Cummins inlet fitting prevents restriction, starvation, or alignment issues that can occur with aftermarket hardware.

If you’re installing a new HX35 turbo, replacing damaged fittings, or repairing an oil leak at the turbo feed port, the 3919687 oil inlet fitting provides a perfect OE match for all HX35-equipped Dodge Ram trucks.

Fitment

• 1994–1998 Dodge Ram 2500/3500 with 5.9L 12-Valve Cummins
• 1998.5–2002 Dodge Ram 2500/3500 with 5.9L 24-Valve ISB Cummins
• Holset HX35 turbochargers (OEM applications)
• Direct fit on stock oil feed line and turbocharger housing

Cross-Reference (Cummins-Only)

Related Cummins turbo-oil hardware:
• Cummins 3903924 OEM Timing Pin – 12V
• Cummins 3900625 OEM Hex Flange Head Cap Screw
• Cummins 3915787 OEM Threaded Plug – Oil Filter Housing

FAQ

Is this the correct OEM oil inlet fitting for an HX35 turbo?

Yes — 3919687 is the factory oil feed connector used by Cummins and Holset on all HX35-equipped 5.9L trucks.

Does this fit a 12-valve and 24-valve 5.9L Cummins?

Yes. It fits both 1994–1998 12V and 1998.5–2002 24V engines using an OEM HX35 turbo.

Does this work with aftermarket oil feed lines?

It is designed for OEM feed lines. Aftermarket lines may require matching adapter fittings.

Can a damaged or leaking oil inlet fitting harm the turbo?

Yes. Any restriction or leak at the inlet can starve the turbo of lubrication and cause premature failure.

Specifications for cummins 3919687