The Supertech dual valve spring kit is specified for VW and Audi 1.8T 20-valve four-cylinder engines. It supplies matched dual springs intended to support valve control in higher-rev or upgraded applications while fitting the 1.8T 20V valvetrain. Offered as a direct replacement kit for those engines, the springs help maintain valve stability where the Supertech application listing applies.
Supertech VW/Audi 1.8T 20V 4cyl Dual Valve Spring Kit