Abstract: A corrosion-protective cover 3 is molded of a synthetic resin. The corrosion-protective cover 3 includes a base plate portion 29 having a battery post insertion hole, first hook portions 30 and 30 formed at a rear end of the base plate portion 29 so as to be engaged with a wire connection portion 9, and a second hook portion 31 of a generally U-shape which is formed at a front end of the base plate portion 29, and has elasticity, and can be retainingly fitted on curved surfaces 40 and 40 of fastening portions 6 and 6, with the first hook portions 30 and 30 engaged with the wire connection portion 9.

Abstract: A corrosion-protective cover 3 is molded of a synthetic resin. The corrosion-protective cover 3 includes a base plate portion 29 having a battery post insertion hole, first hook portions 30 and 30 formed at a rear end of the base plate portion 29 so as to be engaged with a wire connection portion 9, and a second hook portion 31 of a generally U-shape which is formed at a front end of the base plate portion 29, and has elasticity, and can be retainingly fitted on curved surfaces 40 and 40 of fastening portions 6 and 6, with the first hook portions 30 and 30 engaged with the wire connection portion 9.

Abstract: A plug cap 100 for an ignition plug includes a first annular seal member 30 which seals a gap between an ignition cable 4 and an inner surface of an insulating pipe 20 in a liquid-tight manner and a second annular seal member 24 which seals a gap between an inner surface of an ignition plug-mounting hole 2 and an outer surface of the insulating pipe 20 in a liquid-tight manner. A cap member 40 includes a cover portion 41 which covers those portions of the first and second seal members exposed to the exterior of the engine, and an ignition cable-holding portion 43 which holds and curves the ignition cable 4 to regulate the angle of extension of the ignition cable 4 from the insulating pipe 20.

Abstract: In an ignition cable connection terminal, a band-like connection portion of a stopper piece portion extends from an edge of a fitting portion, and is folded back to extend in a direction of the axis of a connection terminal, and a body portion of the stopper piece portion is erected. A surface of the connection terminal is curved together with the fitting portion to thereby provide a curved surface which forms part of a cylindrical surface.