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The spark plugs are under the large black box on top of the engine. There are 2 hose clamps, 2 bolts on the passengers side. Then once you get that off, you need to remove the coil packs. They take a 10mm socket. The spark plugs are under the coil packs.
INSTALLATION PROCEDURE NOTE:
INSTALLATION PROCEDURE IMPORTANT: Make sure that the ignition coil seals are properly seated to the valve cover.