Champion D21 spark plug
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CHAMPION is one of the most recognized historical manufacturers of ignition systems (spark plugs, coils, harnesses etc.).
Offering a wide range of spark plugs for various uses: original replacement, prepared and competition engine.
They design and produce spark plugs with platinum, iridium, copper and titanium electrodes, with single or multiple weights.
Of the highest quality and longevity, champion spark plugs are an excellent choice for your engine.
You can find the following features: At the bottom of this sheet, if in doubt, do not hesitate to contact our advisors.
Electrode spacing (mm): 0.7
Type of connection: M4/SAE
Thread: M18x1.5
Wrench opening: 23
Spark plug: 1-ground electrode
Spark plug: with Flat Seat
Thread Length (mm): 12.7
Equivalencies:
ACDelco: C88
CHAMPION: 502
CHAMPION: C15
CHAMPION: 9
CHAMPION: 813
MOTORCRAFT: BT9
MOTORCRAFT: BT10
PRESTOLITE ELECTRIC: 1810
PRESTOLITE ELECTRIC: 189
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