The Steering Wheel is an item found in Putt-Putt Goes to the Moon.
The steering wheel is one of the five items needed to make the rocket. After Putt-Putt enters a forked pathway and sees the space mice fly by, he must go to the path on the left (Putt-Putt's right). Putt-Putt will find Rover trying to get the steering wheel, but he can't reach it, so Putt-Putt suggests they work together. Rover then lifts Putt-Putt up with his claw, but only manages to get Putt-Putt 3/4 of the way there. Putt-Putt will then to put Pep to the ledge where the steering wheel is, so it can be obtained. Shortly after, Putt-Putt will retrieve Pep and Rover will lower Putt-Putt down.
After Putt-Putt buys the rocket ship, he will need to go inside and attach the steering wheel onto the pipe above the fuel gauge.