MAHLE MS19551 Fuel Injection Plenum Gasket. Fuel Injection Plenum Gasket. Plenum Gasket Material: Beaded Steel. Fits the following vehicles: 2001-2005 Mazda Miata. Mazda BP6F-13-135 MAHLEr gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.