Laser Tools 1716 Deep 22mm socket
Laser 22mm deep reach impact socket
Champion 'D' sized spark plugs have an unusual hex (spanner) size at a nominal 23mm, we've found that this 22mm deep reach impact socket will snugly fit most of the 'D' types (D16, D21, D23 etc) . If unsure, please email us before purchase and we will check. As there are slight variations between batches of Spark Plugs it is recommended that you purchase plugs and socket together, we can check that this will fit the actual plugs you purchase.
Please note that we have tested some less common D types such as D89D and this socket will not fit