Momentum Worx ISX / X15 Oil Line Conversion Kit

For Converting From Holset VGT → BorgWarner / S400-Series Non-VGT Turbos

Converting your Cummins ISX or X15 from the factory Holset VGT turbo to a fixed-geometry BorgWarner S400-series turbo requires the correct oiling setup — and the factory lines will not work. The Momentum Worx Oil Line Conversion Kit gives you every component needed for a, reliable, leak-free installation.

Built from high-quality stainless braided PTFE lines, premium fittings, and proper hardware, this kit removes the guesswork and ensures your new turbo receives the correct oil volume, pressure, and return flow it needs to live a long, happy life.

What’s Included

✔ Stainless Braided PTFE Oil Feed Line

Designed for correct oil pressure and temperature control, compatible with all S400/S410/S500 bearing housings.

✔ Stainless Braided PTFE Oil Drain Line

High-flow, heat-resistant construction with proper routing length to prevent back-pressure and oil pooling.

✔ Turbo Oil Line Fittings

All required adapters for both the engine block and the turbocharger — AN, JIC, and specialty fittings included.

✔ Actuator Plugs

To prevent coolant leakage from previous coolant passages 

✔ Oil Drain Line Bolts & Hardware

Everything required to mount the drain flange securely to your engine and turbo.

No extra parts needed — your entire VGT-to-non-VGT oiling conversion is handled in one kit.

Turbo Compatibility

This kit works with all major S400-series and S500-series BorgWarner/Aftermarket performance turbos, including:

• S400, S410, S470, S475, S480, S500, S580, S588
• 171702
• 14989880004
• 14969880005
• 171701
• And many more

If your turbo isn’t listed, feel free to reach out — we’ll verify compatibility for your exact setup.

Additional Fitment Notes

• Compatible with turbo manifold adapters
• Compatible with T6 manifolds
• Designed specifically for Cummins ISX & Cummins X15 engines replacing the factory Holset HE451VE / HE400VG / VGT assemblies