Abstract: A pivotal spark plug connector (10) has a wire clamp part (12) and a spark plug terminal receptacle part (16) pivotably connected together and held in a desired position by a position-retaining mechanism (18) including a pair of substantially planar, circular portions (32, 34) disposed with opposed faces (40, 42) of each in abutting relation such that teeth (36, 38) formed on the opposed faces (40, 42) in the form of radially extending ridges can interengage with one another under the bias of a spring (52) or other resilient element (70, 74). The wire clamp part (12) and terminal receptacle part (16) can be positioned relative to one another under a force which overcomes the bias of the resilient element on the circular portions (32, 34) of the position-retaining mechanism (18). A boot (58) having a bore (62) of two different diameters and external serrations (68) to facilitate flexing is arrangeable over the connector for shielding it from contaminates.