This is the Intake Manifold for the OS 81FS-a Engine (OSMG0981).
It bolts to the rear of the cylinder head, and the carb is connected
to the other end. The intake manifold transfers fuel and air from the carb to
the intake valve in the cylinder head.
One aluminum Intake Manifold
DIMENSIONS: Overall length: 42mm Inside diameter: 8mm Width between mounting flange bolt holes: 17.5mm (center to center)
– If you need more information, use these O.S. resources –
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