Reference: 380MM steering wheels - THE TRUTH

[Jim Breazeale]

There is much confusion, deception, out and out lies, myths and misinformation about 380MM steering wheels.
I will attempt to solve some of them.
First of all, not all 380mm wheels are alike and most of them are not appropriate for a 911 or 912 but they will fit, sort of.
The only true "380mm Carrera RS" wheels come from 70 and 71 914s. 914/4s and 914/6s use the same wheel in 70 and 71. 70 and 71 914/4s have a bunch of plastic on the back of the wheel to adapt it to the 914/4 steering column and turn signal switch. 914/6s use the same parts as a 911 on the back of the wheel.

The first picture is the back side of a 72 or later 914/4 steering wheel.
The next picture is the back side of a 70/71 914 steering wheel with the plastic junk removed.
The next picture is of a 72 or later 914 steering wheel with the plastic removed.

Do you notice any differences?
They are significant!
The splines are the same and both will fit on a 911 steering shaft. The later 914 wheel could possibly suffer if the wheel nut gets over tightened, though. Not a problem with the early 914 wheel.

Ciao

Jim