NGK Racing Spark Plugs BR7EFFor nitrous or forced induction applications. Two heat ranges colder than stock, gapped at . 032 set of 8.

and a wide-open race growl for the track

They're available in three inlet configurations which cover a wide range of applications

Genuine Bosch LSU 4

Just the basics

Will not fit cathedral port heads

Hollow Stem

Gaskets Included:  No

more reliable communication with your PC and vehicle

Some aftermarket higher lift fuel pump camshaft lobe designs may require a higher load spring on the pump to maintain fuel pump lifter control

so you not use the plastic lifter trays

These do use a tie bar

Compatible with gasoline and alcohol