-4 JIC / M12 O-RING (TURBO OIL FEED FITTING)

🔧 Turbo Oil Feed Fitting – -4AN JIC to M12 O-Ring | Fits Holset & Cummins Oil Supply Ports

This -4AN JIC to M12 O-ring turbo oil feed fitting is designed for clean, leak-free oil delivery to your turbocharger. Precision-machined from lightweight aluminum and sealed with an integrated O-ring, this fitting is a must-have for custom oil line setups on Cummins-powered builds.

Compatible with Holset turbo oil inlets and Cummins oil filter head outlets, this fitting is ideal for both 5.9L and 6.7L Cummins applications. It can also be used as an oil inlet fitting on most S300 turbos and as an alternative to the OEM ORFS oil feed fitting on the engine block.

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⚙️ Key Features:

• -4AN JIC to M12 O-Ring Adapter – For clean and secure oil line connection

• Fits Holset Turbo Inlets – Matches standard turbo inlet thread specs

• Fits 5.9L & 6.7L Cummins Oil Filter Head Outlets – Bolt-on compatibility

• Works with Most BorgWarner S300 Turbos – Ideal for custom builds or upgrades

• Replaces OEM ORFS Oil Feed Fitting – Use on side-of-block oil supply locations

• Lightweight Aluminum Construction – Durable, corrosion-resistant finish

• Integrated O-Ring Seal – Leak-free installation (for use with 3/4" hose)

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✅ Ideal For:

• Custom turbo oil feed line installations

• Single and compound turbo setups

• Cummins-powered diesel performance trucks

• Holset & S300-style turbochargers

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🛒 Upgrade your oil feed system with this reliable -4AN to M12 O-ring adapter fitting. Designed for performance, built for precision.