SELECT BUTTON ASSY-OR4 WHITE. The Sharp part number is JBTN-B114MRF0A This is a Genuine Sharp part, not aftermarket.

This part is also known as: SHAJBTN-B114MRF0A, JBTNB114MRF0A, JBTN-B114MRF0A, B0FTRHJZ7G

Does your part fit?

Many replacement parts look correct but won’t fit your model. This microwave part fits the following models:

Sharp:
SSG_MISC, R1851A, R1850A, R1852A, R1851, R1850