The closest option we have for your Quest Marine Speaker # 292-100161 is the Removable Grille for Jensen 6-1/2" Coaxial Marine Speaker # RG65HGS
This grill measures 6-1/2" in diameter so it's going to be a bit larger, however a better solution I can offer is to replace those speakers with the:
-Jensen Marine Speakers - Recessed Mount - 6" Diameter # MS5006BR.
These speakers are virtually the same speakers as # 292-100161, however it is a bit smaller, requiring a cutout of 4-3/8" diameter... view full answer...