The Supertech dual valve spring kit for VW 1.8L/2.0L 8V engines with 8mm valve stems is specified for 8mm stem applications and presented as a dual-spring kit for those VW engines. The listing identifies the stem size explicitly and notes the kit configuration for 8mm stems. This spring kit targets the 8-valve VW 1.8L/2.0L engines requiring an 8mm-stem dual-spring setup.
Supertech VW 1.8L/2.0L 8V 8mm Stem (Race Only) Dual Valve Spring Kit (8mm Stem)