GPZ Racing Steel replacement throttle shaft for Walbro Carburetors.
The original brass throttle shaft is prone for flexing and wearing therefore leaking air past the shaft making it difficult to keep in a proper tune.
Using this Steel shaft will decrease flexing and wear, keeping your engine in precise tune. Comes with a higher tension return spring.
Used in Walbro model carburetors: WT603B/668/990/1048/1107. Not for use in WT813.
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