The Problem with this O-Ring B61P-15-106A

[@bondjw07]

A true caliperologist if I ever saw one.

[@merlyn2121]

Miata roadster man. Bill just knows his shyit.

[@RobocopW40]

What’s the size of the orings?

[@jcgonza2664]

hello! where did you buy the right gasket?

[@gregory549]

I got it from Miata Roadster. it looks like their website has changed recently. mazdashifters.com/home. The part is MR-VQS-THERMO Viton Quattro seal thermostat neck to head (NA/NB Miata). You could shoot Bill a message and see if he still has them.