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O.S. - OSMG5136 OSM45904110 45904110 531028125636 4531028125636
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  Tech Notes

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Parts Compatibility

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O.S. Cylinder Head FS-91-P
O.S. Cylinder Head FS-91-P
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Special Stock Number Units at this Price Tower's Low Price Click to Order Quantity Discount Savings
O.S. Cylinder Head FS-91-P Add to Wish List
133.68  Buy Now 6.30  
O.S. Cylinder Head FS-91-P Add to Wish List
199.47  Buy Now 10.50  
O.S. Cylinder Head FS-91-P Add to Wish List
330.70  Buy Now 19.25  

Regularly Purchased Together
— Customers who purchased the above product also bought the following —
Although customers also purchased these, compatibility is not guaranteed. Click an item for product details.
1.  LXCU60 O.S. Rocker Cover FS-91-P 15.49  Buy Now
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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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