The oil pump relief valve spring for the Citroen DS is a crucial component that helps regulate engine oil pressure. This spring ensures that excess oil is redirected back to the sump, providing consistent lubrication and optimal engine performance. It is vital for engine longevity and efficiency, protecting against overpressure and potential damage. Made from durable material, the spring withstands high pressure and temperatures, ensuring long-term operation of the oil pump and overall vehicle reliability.