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O.S. - OSMG2625 OSM72109600 72109600 531028602137 4531028602137
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  Tech Notes

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Parts Compatibility

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O.S. Exhaust Manifold Outside FS-70/FS-91
O.S. Exhaust Manifold Outside FS-70/FS-91
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O.S. Exhaust Manifold Outside FS-70/FS-91 Add to Wish List
53.46  Add To Cart 2.52  
O.S. Exhaust Manifold Outside FS-70/FS-91 Add to Wish List
79.77  Add To Cart 4.20  

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.  LXXA46 Futaba Heavy-Duty Servo Extension 8" J 7.29  Add To Cart
2.  LXFV29 Sullivan Gold-N-Rod Clamps (6) 6.79  Add To Cart
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Tech Notes
This Exhaust Manifold (header) makes a 120 bend for routing
exhaust outside the cowling or fuselage on a radio controlled airplane.

This header is designed to fit the O.S. FS70 & FS91 Surpass series engines.


One 120 chromed exhaust manifold
(Has male threaded portion on one end & female threads on the other)
One hex nut


Male End
Thread Pitch -0.75mm
Outside Diameter-0.425"(10.8mm)
Inside Diameter-0.320"(8.1mm )

Female End (exhaust connection)
Thread Pitch -0.75mm
Outside Diameter-0.509"(12.9mm)
Inside Diameter-0.408"(10.3mm)
Inside Exhaust Pipe Connector
Outside Diameter-0.509"(10.3mm)
Inside Diameter-0.409"(10.3mm)
Thread Depth -0.424"(10.7mm)


– 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. Exhaust Manifold Outside FS-70/FS-91
This item is an optional part for the following:
 LXEXP5 O.S. FS-70 Ultimate 4-Stroke w/Pump  (Parts List)
 LXSZW5 O.S. 81FS-a Alpha Series Ringed 4-Stroke w/Muffler  (Parts List)
 LXWY29 O.S. Carburetor #60R FS70SII  (Parts List)
 LXCA59 O.S. Carburetor #60N FS91SIIP  (Parts List)

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