880 is stock 893 is actually the Silverstar Size that is recomended as said earlier in the post 893 is higher wattage i put them in because they are less amber and constrast my HID's if your going with hid's 880 or 893 exact same size bulb and in an hid won't matter beacuse your are not looking at wattage they will be 12v and you are looking at burn temp for color good luck be happy your truck had the fogs in mine didn't and it was a trip putting them in
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