New aftermarket Clevite OE .50mm main bearing set for NA and NB Mazda Miata. These are the bearings that go between the crankshaft and the engine block. Clevite main bearings feature 100% lead-free aluminum silicon. These bearings are engineered with 60% more silicon than comparable replacements which results in greater seizure and wear resistance. These bearings are .50mm oversize. Part number MS1802A50MM. Thrust washers are not included. Fits 1990-2005 Mazda Miata. Sold as a set of 5.
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