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Pinion

speedometer - 26 teeth

MG MGB with 4 synchro gearbox less overdrive from November 1967 to September 1974 (Roadster from GHN4-138401 to GHN5-359169, GT from GHD4-137795 to GHD5-360069), MGB with automatic transmission from November 1967 to August 1973 (Roadster from GHN4-138401 to GHN5-327741, GT from GHD4-137795 to GHD5-327990)