135mm ID x 147.5mm OD x 6mm. A component which prevents a leak at the Fuel Level Sending Unit. Calif. Device that Seals the tank around the Fuel Pump. Device that secures the Fuel Pump in position. Dual Fuel Tanks. Exc.Calif. Fuel Pump O-Ring. Fuel Tank Sending Unit Gasket. Part cannot be reused/reinstalled. PZEV Spec. Single Fuel Tank. F/PMP (O ). Cover. Sender. Tank Lock. Tank Sending Gasket. Included with: Fuel Pump, Fuel Pump Part cannot be reused/reinstalled, Fuel Pump Part cannot be used/reinstalled, Fuel Pump assembly, Fuel Sender Unit, Fuel tank, Module, Sending Unit.