Abstract: A mechanic's work tray for supporting a plurality of items to be used by the mechanic in and around an engine compartment. The work tray has an upper tray section with a pair of L-shaped legs adjustably mounted thereto for quick and easy insertion of and supporting of the tray over substantially any size engine compartment. The adjustable legs enable a single person to align and support the work tray over the air cleaner of an engine in substantially any vehicle, to allow quick and easy storage and use of tools and parts on the tray when working in the engine compartment. The work tray is assembled from a minimum of parts so as to include a pair of carrying handles integrally formed with the upper tray section and adjustable leg means secured to guiding and holding elements held between the upper tray section and the L-shaped legs, to allow for easy adjustability of the leg means and use of the work tray.