Stop fighting with undersized, poorly machined drain flanges. This is the clean, high-flow solution your turbo build deserves.

Features & Benefits

Precision CNC-Machined Billet Construction

Machined from billet aluminium for a level of accuracy and surface finish that cast or overseas knock-off flanges simply can't match. Every port and bolt hole is held to tight tolerances so you get a proper seal and a clean install the first time.

100mm Bolt-Circle Diameter for Mid-Frame Turbos

The 100mm billet 10AN turbo drain flange mid frame bolt pattern is machined specifically to match the oil drain outlet on mid-frame turbochargers, including both journal-bearing and ball-bearing units. No adapting, no guessing, no shimming.

High-Flow 10AN Oil Return Port

The 10AN port keeps oil moving freely back to the sump, reducing the risk of oil pooling in the centre housing, one of the most common causes of turbo seal failure and premature bearing wear. Pair it with a quality 10AN drain line and you're set for serious street or track duty.

Compact Profile for Tight Engine Bays

The low-profile design gives you more flexibility when routing your drain line in crowded engine bays, whether you're building a diesel performance rig, a turbocharged gas platform, or anything in between.

Made by BSI Inc.

Engineered and produced by Black Sheep Industries, this flange is built to a standard you'd expect from a dedicated turbo components manufacturer, not a catalogue importer. Whether you're ordering from Calgary or California, you're getting the same quality part with the same commitment behind it.

Every turbo build lives or dies on the details. Start your oil return system with a flange that's actually worth trusting.

FAQ

What turbochargers is this drain flange designed for?

It is machined for mid-frame turbochargers with a 100mm bolt-circle oil drain outlet, including journal-bearing and ball-bearing units.

What size is the oil return port?

This flange uses a high-flow 10AN oil return port to help move oil freely back to the sump.

What material is the flange made from?

It is precision CNC-machined from billet aluminium for accurate port and bolt-hole placement and a clean surface finish.

Who manufactures this turbo drain flange?

It is engineered and produced by BSI Inc., also known as Black Sheep Industries.