Spray 9, a few old rags and brushs, and a hose.Alternative suggestions?
it is true that steaming engine bays can damage the electrics. but, providing you are careful and cover the delicate parts, steaming with a degreaser is the best way to clean the bay.You really don't want to get you engine steam clean. The steam can get into the electrical connectors and cause short or bad connections. Also steam is hot so it can melt through some of the plastic and rubbers in the engine bay.