Fits:
Carter YF, YFA carburetors
Carter W-1, WA-1, WE carburetors
Compatible with new alcohol enhanced fuels.
'Seat' Dimensions:
Orifice Diameter: .076"
Thread Diameter: 5/16"
Overall Length: .735" (not including needle)
Carter OEM #: 25-510S
Quantity: 1 Needle & Seat Assembly