The MMX 60mm Billet Coolant Expansion Cap is designed and engineered in the UK from a solid billet of aluminium, replacing the factory coolant expansion tank cap rather than simply fitting over it.
Fitment is for models using the matching OE part number 17 11 7 639 024 — check your existing cap before ordering.
Machined from solid billet aluminium
Direct replacement for the factory 60mm coolant expansion cap
