This is the Inner Head (Buttonhead)for the
OS Max .21 VZ-B V-SPEC-T engine
It is the second part of a Two-Part system along with the Outer Head.
This design allows for easier replacment of both the Inner & Outer parts.
FEATURES: Aluminum construction
INCLUDES: One Inner Head, also known as a "buttonhead."
REQUIRES: None, item is a stock part
SPECS: Diameter: 33mm (1.3")
Glow Plug Thread size: M8x.75mm
COMMENTS: If the Outer Head is needed, use OSMG5011
If the Cylinder Head Bolts are needed, use OSMG8673.
If the Gasket Set is needed use OSMG6180.