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I used to use the AC/Delco PF-35 because of its size and relatively cheap price. But the autoparts stores here in my town stoped carring that and and now have the PF-454 as the replacement. Its quite small so I didnt even bother with it. I went with a Bosch, its about the same size as the PF-35 and around the same price. Havent had any complaints yet.