This is the Cylinder Head Only for the OS Max FS 91 Surpass II Pumped Engine.
The valve assembly is not included and if needed must be purchased separately.
**Works with Surpass II Pumped and Non-Pumped**
FEATURES: Aluminum construction
Pre-installed brass tubing guides for the valves
INCLUDES: One FS 91 Surpass Pumped Version
One Aluminum Head Gasket
COMMENTS: For cylinder head with valves pre-installed, use OSMG5232.
The intake manifold mount holes are diagonal across the throat (one
at lower left and one at upper right.
Update EEW 08/16/06