CUMMINS 4940183 GENUINE TURBO OIL INLET SUPPLY FITTING | OEM FOR 1998.5-2021 CUMMINS DIESEL

The Cummins 4940183 Turbo Oil Inlet Supply Fitting is a genuine OEM part designed to ensure proper lubrication for your turbocharger. Compatible with 5.9L and 6.7L Cummins engines from 1998.5 through 2021, this precision fitting delivers oil from the engine to the turbocharger, preventing premature wear and ensuring maximum performance. Ideal for stock replacements or turbo upgrades, it's the same fitting used in factory production.

Pair this fitting with our Cummins OEM and performance turbochargers, turbo oil supply lines, and oil filtration components for a complete, leak-free installation.

Features & Benefits

• OEM Quality: Genuine Cummins part for perfect fit and sealing.
• Durable Construction: Built to handle high-temperature, high-pressure oil flow.
• Wide Fitment: Works with multiple Cummins turbocharger models from 1998.5-2021.

Cross Reference Part Numbers

• Cummins 4940183
• Replaces: 3949692, 3949874

Frequently Asked Questions

Should I replace this fitting when installing a new turbo?

Yes - replacing the oil inlet fitting ensures a clean, unrestricted oil flow to the turbocharger, reducing the risk of damage.

Does this fitting come with seals or washers?

No - sealing washers are sold separately but are available in our turbo oil line kits.

Is this fitting compatible with aftermarket turbos?

Yes - as long as the turbocharger is designed for OEM-style oil inlet connections for the listed Cummins engines.

Fitment

• 2003 Dodge Ram 2500/3500 5.9L Cummins
• 2004 Dodge Ram 2500/3500 5.9L Cummins
• 2005 Dodge Ram 2500/3500 5.9L Cummins
• 2006 Dodge Ram 2500/3500 5.9L Cummins
• 2007 Dodge Ram 2500/3500 5.9L Cummins
• 2008 Dodge Ram 2500/3500 6.7L Cummins
• 2009 Dodge Ram 2500/3500 6.7L Cummins

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