Image Item No. Description  2574c01 (Inv)  Pullback Motor 9 x 4 with 2 Black Tire 24mm D. x 8mm Offset Tread - Interior Ridges (2574 / 3483) Catalog: Parts: Motor, Non-Electric  32283c02  Pullback Motor 9 x 4 x 2 1/3 with Black Base, White Axle Holes, Studs on Front Top Surface Catalog: Parts: Motor, Non-Electric  45721c01  Windup Motor 4 x 4 x 3 1/3 (Technic) Catalog: Parts: Motor, Non-Electric