APR Iridium Pro Spark Plug 14X19X16mm | VW · Audi B7 S4 4.2L V8 there are no unnecessary upgrade

there are no unnecessary upgrade charges and all features and upgrades are included at one low cost

0 TSI engine and transmission

Street Bushing Set (BSH01A0) / Track Bushing Set (BSH01A1)

The RPM limits are raised in all gears to 7200RPM on stage 1 & stage 2 single pulley tunes and 7350RPM on dual pulley

Lowers 22 mm or 0

APR Iridium Pro Spark Plug 14X19X16mm | VW · Audi B7 S4 4.2L V8 there are no unnecessary upgradeAPR Iridium Pro Spark Plugs are the excellent upgrade for tuned engines. Our spark plugs are made from Iridium, which is one of the strongest materials you can use in this type of application. They run cooler, resist preignition, last longer than other materials with higher melting points, and even require less voltage to produce a strong spark. The electrode is harder and stronger than other materials, can dissipate heat more easily, is better