Autosports Engineering CD009 Pilot Bushing Adapter

Autosports Engineering Pilot Bushing Adapter for the CD009 conversion.

Two sizes are offered — measure your flywheel's center bore before ordering. The smaller 1.65" fits flywheels from other brand kits as well as ASE flywheels made between 2018 and November 2025. The 1.75" suits later and larger center bore flywheels.

What this part is

This is the adapter that carries the pilot bearing, sized to your flywheel center bore. It is not a complete pilot bearing housing assembly. The bearing itself is a custom 32mm OD × 16mm ID true rolling bearing — ASE has these made specifically because a 32×16 bearing is not manufactured for the CD009 application. The 16mm inner diameter is what allows it to run on the CD009 input shaft.

All current ASE pilot bearings are true rolling bearings, superseding the earlier solid one-piece design. Product images reflect the current version.

Before you blame the adapter — check your transmission bearing size

If a pilot bushing adapter has been destroyed prematurely, the adapter is usually not the cause.

The CD009 comes with one of three main input shaft bearings depending on year — 90 mm, 95 mm or 100 mm. Every ASE adapter plate is cut for the 100 mm, which is by far the most common.

Install a plate against a 90 mm or 95 mm bearing and there is visible play in the bore. The shaft moves radially inside that gap continuously, which causes noise, tears up the input shaft bearing, and prematurely destroys the pilot bushing adapter. The adapter is absorbing movement it was never designed to take.

The fix ships in every current CD009 kit: precision laser cut bearing rings that convert a 90 mm or 95 mm bearing up to 100 mm. The thinner ring handles 95 mm, the thicker one handles 90 mm. They pop straight on with no fitting.

Measure your bearing OD before installing the plate. It takes thirty seconds and prevents a teardown.

Full explanation

Read the full write-up on CD009 bearing sizes →