The Supertech titanium retainer for BMW S14 and S38 applications is described as similar to the factory retainer. Supplied as a titanium component, it matches the fitment cues for those BMW engines and is intended as a like-for-like replacement retainer. The description notes its similarity to the original equipment retainer for those applications.
Supertech Titanium Retainer BMW S14/S38. Similar To Factory Retainer