Here in the forum is often asked which spark plugs should be used for the Zetec engines. Motorcraft AYFS 22CB. These are for the Zetec-E engines starting from 2/1992. Experience according to the Zetec engines run best with these spark plugs. So best always turn these in so that no threads like: “My Escort jerks or does not start” appear. Thanks glow plugs best also those of Motorcraft. But note: There are some with M5 and which with M4 thread. Original order number: 7 088 988 (M4); 1056 857 (M5) This is for the Escort FAQs which will soon be seen in the right margin column.