URO 454-478-00-12 Fuel Pump Assembly Sealing O-Ring

The URO 454-478-00-12 is a precision-engineered sealing O-ring designed specifically for fuel pump assemblies in Mercedes-Benz vehicles. This critical sealing component creates a leak-proof barrier between the fuel pump and fuel tank, preventing fuel vapors and liquid fuel from escaping while maintaining proper system pressure.

Key Features:

• Direct replacement for Mercedes-Benz OEM part number 454-478-00-12
• Constructed from fuel-resistant rubber material engineered to withstand constant exposure to gasoline and fuel additives
• Maintains elasticity and sealing integrity across wide temperature ranges
• Prevents fuel leaks and maintains proper fuel system pressure
• Essential component for fuel pump installation or replacement

This O-ring is a wear item that should be replaced whenever servicing or replacing the fuel pump assembly to ensure a proper seal and prevent potential fuel leaks. Using a new seal during fuel pump service helps maintain fuel system integrity and vehicle safety.