Filler cap
Product number:
558
on brake master cylinder reservoir
Product Information "Filler cap"
MG: MGB with single line brake (France and Benelux only) from April 1967 plus MGB LHD models with dual line brake system less servo from November 1967 to December 1974 (Roadster from GHN4-138401 to GHN5-367900, GT from GHD4-139471 to GHD5-368600)
on brake master cylinder reservoir