037618110, 1UD218110, 1UN218110 Spark plug NGK 4055 M14 x 1,25 20,8 mm AUDI: Quattro, Coupe B2, 80 RENAULT: 21 Saloon, CLIO 1, Trafic I Van

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling The 0.6mm laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage