Abstract: A tool kit for containing truck or tractor repair tools and parts includes an elongate, unitary body adapted to be supported by the upper peripheral portion of a front tire on either side of a cab-over-engine tractor. The body has a front section and a rear section on which are provided transverse trays for tools or repair parts, a center section having a horizontal plate for the temporary support of tools or parts, and an outer sidewall with larger, longitudinally-extending trays for holding larger tools or parts. The three body sections have a single base wall which has a radius approximately equal to the radius of a tractor tire on which the kit is designed to be supported. The center section includes a pair of handles extending upwardly from the base wall at the forward and rearward ends, respectively, of the horizontal plate.