Abstract: A spark plug removal tool apparatus and method for a spark plug having components of an extended smooth spark arc producing terminal portion, an adjacent helical threaded portion, an adjacent hex drive, an adjacent insulator portion, and a terminal electrical interface extension. The tool apparatus includes a non rotating collet extension having a plurality of fingers to removably engage the electrical interface and an inner surrounding sidewall that threadably engages the collet, also an outer surrounding sidewall rotatably engaged to the inner surrounding sidewall not having one-way axial movement as between the inner and outer surrounding sidewalls, wherein the collet, inner, and outer surrounding sidewalls are all co-axial. Operationally, when the tool starts to unscrew the spark plug from an engine head, an axial non-rotating force is applied to the electrical interface extension that helps prevent separating damage between the spark plug components.

Abstract: A spark plug removal tool apparatus and method for a spark plug having components of an extended smooth spark arc producing terminal portion, an adjacent helical threaded portion, an adjacent hex drive, an adjacent insulator portion, and a terminal electrical interface extension. The tool apparatus includes a non rotating collet extension having a plurality of fingers to removably engage the electrical interface and an inner surrounding sidewall that threadably engages the collet, also an outer surrounding sidewall rotatably engaged to the inner surrounding sidewall not having one-way axial movement as between the inner and outer surrounding sidewalls, wherein the collet, inner, and outer surrounding sidewalls are all co-axial. Operationally, when the tool starts to unscrew the spark plug from an engine head, an axial non-rotating force is applied to the electrical interface extension that helps prevent separating damage between the spark plug components.

Abstract: A retainer apparatus and method for replacing a damaged first aperture thread in a base material, the apparatus includes a first annular element having a threaded inner surface and a frictional outer surface that are co-axial to one another, the outer surface having a slip fit with a second aperture in the base material. Also included is a second annular element including a void and a frictional outer periphery that has a slip fit with the second aperture, the second annular element includes a channel from the void to the outer periphery. The first and second annular elements are adjacent to one another within the second aperture. Further included is a drive element that has a partial interference fit with the channel, wherein the drive element is operational to drive the outer periphery into the second aperture thereby retaining the first annular element in the second aperture.