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OEM Crankshaft FRONT Main Seal Miata 1991-2005 1.6 1.8 B3C7-10-602A

List Price: $9.47

Our Price: $8.25

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Product Code: NAB-0123

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Product Description

OEM front main oil seal for 91.5 - 05 Miatas with big crank (37mm ID). Best quality seal from what we've used in our shop. Nothing aftermarket comes close. B3C7-10-602A.

This is a true OEM seal, made by Mazda's manufacturer and identical to the one you get at the dealer. It may ship in non-branded packaging.

If you have an early 1.6 1990-1991, you will likely need the small front crank seal 30mm ID. Contact us if you are not sure.

Average Customer Review: Average Customer Review: 3 of 5

3 of 5 Total Reviews: 1 Write A Review

0 of 0 people found the following review helpful:

sketch	February 17, 2026
Reviewer: Lane from IL

sold as an oem seal but came in a ziploc bag? why are you repacking an "oem" seal? going to be replacing when I redo my front reseal, prompted by the valve cover gasket I bought from rpseed leaking from everywhere after 4 months. if I remember I'll update this review once I've torn my engine down (again)

- - - Rspeed Response: These seals are true OEM (Original Equipment Manufacturer) seals made by the same Japanese manufacturer that makes them for Mazda since Mazda does not manufacture seals. We purchase them in bulk and often do not come individually packed so we have to repack them. They are not aftermarket seals. We have used these in our shop for nearly 30 years without issue.

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