The classic example of an inexpensive part that's expensive to replace. If your rear main seal starts to leak, you can contaminate your clutch. You need to pull the transmission and flywheel to get to it, so we strongly recommend changing this seal whenever you have the clutch off. Fits all NA and NB Miatas and included in our engine rebuild kit.
It's a bit tricky to get into place just right, so we recommend using our special install tool.