NGK Spark Plugs

APPLICATIONS:
All Series II and Series III 3800 engines

We offer these spark plugs in multiple heat ranges depending on your level of modifications. Our recommendations are as follows:
- Use the NGK TR55 spark plugs for a stock heat range in a naturally aspirated or lightly modified motor (Gap at .060).
- Use the NGK TR6 spark plugs (one to two heat ranges colder than stock) if you have a 3800 Series II or III engine with up to 12 pounds of boost. At this level, we recommend reducing the spark plug gap to 0.050", or .035" with nitrous oxide.
- Use the NGK TR6IX plugs as an upgraded stock replacement plug.
- Use the NGK TR7 plugs (two to three heat ranges colder than stock) if you have a 3800 Series II or III engine with 12 or more pounds of boost. The spark plug gap should be 0.040" to 0.045" typically.

IMPORTANT NOTES:
NGK Spark Plugs are sold in eaches. If you want a set of six, please order a quantity of '6'.
Prior to installation, clean the threads of the spark plug holes. We recommend you lightly coat the threads of your spark plugs with anti-seize, and install them hand tight plus 1/16th of a turn, or torque them to 11 to 18 foot-pounds.

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