This nice polished stainless steel cap keeps your pricey fuel where it belongs. As used on classic Minis from 1970-on, and especially important on SPi (single-point injection) and MPi (multi-point injection) classic Minis, which have closed fuel systems. Non-vented. Ref: SIE0319, WLD100660, WLD100310.
This is the cap to use with the MSA1145 flip-top cover.