For use in 356C, SC and 912 cylinder heads, this intake valve is original specification made in Germany.

Specs are:

Head Diameter: 33.9 mm

Stem Diameter: 9.958 mm

Stem Type: Bimetal

Length: 128.6 mm

Lock Type: Grooved Wedge

Note: The quick way to tell what valve you have is by the identification number etched into the top of the stem.