O.S. Outer Head 21XZ-BTower Stock# OSMG5052 • Manufacturer Stock# 22414000
O.S. Max .21XZ-B Engine
This part attaches to the top of crankcase and
provides the cooling of the engine.
Blue anodized aluminum
One outer cylinder head for the OS .21XZ-B
Cylinder head bolts to the crankcase with four 3 x 15mm cap head
This is specific for the OS .21VZ-B.