✅ SOLVED I have no idea?

[TreasureLord KC]

it's hinged amd opens and closes

 

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[MisterHelix]

Some sort of valve?

 

[ticndig]

looks like a small engine carb part. I think I see holes to bolt on to a motor.

 

[robertk]

Agreed, looks like a throttle plate for a carburetor.

 

[dz302]

it's hinged amd opens and closes
View attachment 2137667View attachment 2137669

Google Exhaust Manifold Heat Riser.

 

[dz302]

Google ---> Exhaust Manifold Heat Riser.

 

[TreasureLord KC]

Google ---> Exhaust Manifold Heat Riser.

look like that's it wonder what it's from.