IMPORTANT NOTE ABOUT WHAT SIZE TO ORDER:
Mazda used two (2) different size windshield washer nozzles on the
1990 to 2005 Miata. And they changed them, at random, from one size
to the other during those production years; even within the same
production year! So regardless of what model year Miata you may
have, your car's washer nozzles could be either size; 15mm or 21mm.
That means you need to measure the existing washer nozzles
on your Miata before you place your order!
Here's a quick reference (just in case you don't have a "metric" measuring tape handy) that might help you to determine what size you have:
- 15mm is slightly larger than 9/16" (nine-sixteenths of an inch).
- 21mm is slightly larger than 13/16" (thirteen-sixteenths of an inch).