Thermostat Housing - Compatible with 1990 - 1993 Mazda Miata 1991 1992

This is a perfect fit for my 1992 Miata (1.6l). A bolt head broke off in this housing. I drilled the bolt and both halves of the housing out completely (to 3/8th).I used a socket cap screw facing up (for clearance issues) and a standard bolt/locknut and washer on the top. This allowed me to pinch the 2 halves together enough to prevent any problems. I have been running it this way for a few weeks with no problems. When I replace the timing belt etc, I will probably replace the housing entirely with this one when I replace the timing belt but so far, I don't see any issues with how it is currently set up.