Genuine OEM Volvo Fuel Injector O-Ring Kit, part number 30731386. This kit provides the necessary seals for fuel injectors, ensuring a tight and leak-free connection within the fuel system. These O-rings are critical for maintaining correct fuel pressure and preventing fuel leaks. Typically installed at the base of the fuel injector where it meets the intake manifold or fuel rail. Made from fuel-resistant rubber. Genuine OEM O-rings are specifically formulated for fuel compatibility and temperature resistance, ensuring a reliable seal and preventing fuel system issues.