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Also fits the 90-95 Cosmo 20B engines.
Came stock on all 1993-1995 rx7s.
Can be used to upgrade any 1974-1989 13B engine to hardened gears with multi-window bearings for increased oil flow. These gears come hardened from the factory.
Includes main gear bearing (NF01-10-E04) and rear main seal, both installed.
These are no longer available, but we have some left
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