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O.S. - OSMG5136 OSM45904110 45904110 531028125636 4531028125636
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O.S. Cylinder Head FS-91-P
O.S. Cylinder Head FS-91-P
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330.70  Buy Now 19.25  

Tech Notes
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**


Aluminum construction
Pre-installed brass tubing guides for the valves


One FS 91 Surpass Pumped Version
One Aluminum Head Gasket


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

– If you need more information, use these O.S. resources –
Email: enginesupport@hobbico.com
Web Site: http://www.osengines.com/
Phone: 217-398-8970
  Postal Address:

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Parts Compatibility
Parts Compatibility for O.S. Cylinder Head FS-91-P
This item is a replacement part for the following:
 LXBY61 O.S. FS-91 II Surpass 4-Stroke Ringed w/Pump  (Parts List)
 LXSY82 O.S. FS-91 II Surpass 4-Stroke Ringed w/o Pump  (Parts List)

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