This carburettor spring red 4.5oz is the perfect standard spring for all HS2 and HS4 carburettors on Minis, except for the 997/998 Cooper from 1964-9 and H4 special tuning carburettors. Crafted to ensure reliable performance, this spring helps keep your carburettor’s throttle response smooth and consistent. Whether you're restoring or maintaining your beloved Classic Mini. At Mini World Australia, we understand the love and care you put into your Classic Mini or Moke. Trust Mini World Australia to provide quality parts that honor your passion. Explore our range of new and used parts designed exclusively for Mini enthusiasts like you.