Precision-engineered pressure regulating valve designed for Benz Smart W451 models (part number 1321800015). OEM-grade aluminum alloy construction with CNC-machined components ensures leak-proof performance and corrosion resistance. Direct replacement part with exact factory specifications for seamless installation in fuel/emission systems. Optimizes engine efficiency by maintaining consistent 2.4-bar operating pressure. Includes factory-matched mounting brackets and pre-lubricated O-rings for tool-free maintenance. Bulk packaging available for commercial repair shops seeking wholesale quantities. Certified compatible with Smart Fortwo 451 (2007-2014) gasoline models. Stocked in bonded warehouses for same-day global shipping.