I just got some NGK plugs stock number 4936. I have a 89 240sx with a ka24e motor.

The instructions on the plug say for 14mm gasket type, tighten them hand tight plus 1/2 to 2/3 turn. For 14mm taper seat, they should be hand tight plus 1/16th of a turn.

How do I tell if I have a gasket or not for the plugs? Is the gasket in the head, or on the plug.

here's the images

These do not have gasketshttp://www.angelfire.com/mn/Is...s.jpg

These dohttp://www.angelfire.com/mn/Is...s.jpg

See the difference. Oh just in case, copy the links and paste them into a new Browser window.