Spark Plug Boot – GM (12689269)

Spark Plug Boot keeps fluid and pressure inside the joint it was designed for. Seals fail by hardening rather than breaking, so a leak usually starts as a weep that only appears after a heat cycle.

Replace the Spark Plug Boot when you find seepage at the joint rather than a drip, when the seal has gone hard or flattened, or when the flange it sits against has been disturbed. Reusing a compressed seal rarely holds.

This Spark Plug Boot is listed as part 12689269 (Spark Plugs & Ignition). Where a number has been superseded, the current reference is the one that ships, so check any supersession note before ordering.

This is GM dealer-sourced stock rather than an equivalent, so the number on the Spark Plug Boot traces straight back to the manufacturer.