Dimensions:
Seat orifice diameter: .101"
Male Threads: 7/16"-20
Female Threads: 1/2"-20
Overall Length: .943"
Fits:
Carter RBS carburetors
Carter BB carburetors
Carter BBD carburetors
Carter BBS carburetors
Carter OEM # 25-491S
Quantity: 1 Needle and Seat assembly
Compatible with new alcohol enhanced fuels.