Heater Core Firewall Grommets (Genuine Mazda) – 1989-2005 Mazda Miata 8871-61-219A
Mazda Miata 89-05 (NA/NB)
This is a genuine Mazda part. This is the grommet that protects the heater core from wearing a hole through the hard lines that protrude through the firewall. A lot of people have removed or reinstalled their heater cores and not switching these grommets can cause some huge issues. These help the heater core lines stay in the center of the hole and not letting it wear a hole in itself.
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