Mind you, the motor trade is an evolving beast. 'Fitters' probably call all of the valve train tappets or even 'clackety things'. Engineers and proper mechanics do not. Not digging, just stating the proper names.

Tappets: https://www.brickwerks.co.uk/catalogsea ... ts&x=0&y=0" onclick="window.open(this.href);return false;
Cam followers: https://www.brickwerks.co.uk/catalogsea ... rs&x=0&y=0" onclick="window.open(this.href);return false;