ISR Performance GT Oil Drain Flange Integrated 5/8 male neck (fits GT15-GT35 BB Turbos)

The ISR Performance GT oil drain flange bolts to the oil return on Garrett GT series ball bearing turbos and gives you an integrated 5/8 inch male neck to push a drain hose straight onto. No separate barb, no adapter stack, just a flange with the hose connection built in.

Details

• Integrated 5/8 inch male hose neck.
• Fits GT15 through GT35 ball bearing turbos with the GT style oil drain pattern.
• One-piece design keeps the drain connection compact where clearance to the block and manifold is tight.

Why Drain Routing Matters

A turbo oil drain is gravity fed. Any restriction, kink or uphill section between the turbo and the block lets oil back up in the center cartridge, and that is how a healthy turbo starts smoking out the exhaust or pushing oil past the compressor seal. A short, straight flange-to-hose connection like this one makes a clean downhill drain path easier to achieve.

Applications

Universal for GT15, GT20, GT25, GT28, GT30 and GT35 ball bearing turbos. On the SR20DET, this is the piece that ISR recommends alongside the RST25 and RS3871 turbos as a GT drain setup.

Install Notes

Use a new gasket between the flange and the turbo, clamp the drain hose with a proper hose clamp, and keep the hose running downhill to the block return the whole way.

All ISR Performance products are designed for off-road use only.