Genuine MINI Cooper / Cooper S Engine Valve Spring — 11341485590. Manufacturer Part Number (MPN) 11341485590 / 11 34 1 485 590 / 11-34-1-485-590. MINI Hatchback (R50) MINI Cooper Base Hatchback models (Manual & CVT FWD) 1.6L Naturally Aspirated (W10B16A) 2002 — 2006.