All parts › BMW M4 CSL › S58 engine › Pistons › Wrist pin
Wrist pin
Part of Pistons · about $25 to replace
What it is
Full-floating gudgeon pin.
What it does
Links piston and connecting rod.
How it fails
Retained by circlips; never reuse clips.
| Material | Case-hardened 16MnCr5 steel |
|---|---|
| Spec | 22 mm |
| 65 mm long |