NGK®
THESE ARE CONSIDERED COLD PLUGS AND VERY UNCOMMON TO USE!
Generally Applied to Racing Engines or Hi-Performance Altered Engines.
Reccommended Torque Specifications;
14mm Gasket Type Iron Heads 18-25 lb/ft Hand Tight 1/2 - 2/3 Turn
14mm Gasket Type Aluminum Heads 18-21 lb/ft Hand Tight 1/2 - 2/3 Turn
14mm Taper Seat Iron Heads 11-18 lb/ft Hand Tight 1/16 - 1/8
14mm Taper Seat Aluminum Heads 7-14 lb/ft Hand Turn 1/16 -1/8
For exact application please refer to the NGK Spark Plugs Catalog.
Always refer to your owner's manual and gap to manufacturer's specifications.
When adjusting the spark plug gap, do not pry the outer electrode against the center electrode. Using any other Spark Plug types than OEM specified may cause engine damage or loss of performance.
Turn off your engine, wait for engine to cool, disconnect metal battery cable if entering the propeller cage area. Note the order of the spark plug cables before disconnecting. If you are not sure, tape and number each first. Unfasten the connector by pulling straight up. Pulling on the cables may break the carbon conductor inside. Unscrew the old spark plugs with a spark plug wrench (NOT INCLUDED) and remove them. CAUTION: The boots of the spark plug may be hot, so be careful!!! Do not allow dirt or anything else to fall inside the spark plug holes.
Check the gap on the new spark plugs by passing the feeler gauge (NOT INCLUDED) between the electrodes on the spark plug. If the gap is correct, you will feel a slight drag. If necessary, bend the outer electrode to obtain the right clearance. Screw in the plugs by hand as far as they will go. If necessary you may use a spark plug wrench for an extension. If a plug does not screw in easy, remove it and try again to ensure the threads on the spark plug with the threads in the hole, in order to prevent the threads from stripping.
Tighten the plugs with a spark plug wrench, but do not over tighten. Make sure spark plug cables are installed in the correct order. The connector fastens on by pushing it squarely over the spark plug end.
R5673-7 / COMPATIBLE AC DELCO PART # R43T
Replacement spark plugs for NGK R5673-7:
Brand Model
AC Delco R43T
Accel 265
Autolite 135
Autolite 3264
Autolite AR135
Bosch HR9AC
Champion N63C
Champion V4C
Champion V63C
Champion stk 802
Denso 5332
Denso ITF22
Denso T20R-U
Denso stk 5038
General Motors 5613354
Motorcraft AF2C
Motorcraft stk 99
NGK stk 2817
NGK stk4367
PART # R5673-7
MADE IN JAPAN
