The Genuine Stromberg twin-ball S-jet is the ‘next generation’ needle and seat. It’s designed to eject dirt particles and improve high-speed running and, unlike many a so-called viton-tipped needle valve, it won’t stick or melt in today’s corrosive new gas formulas. Comes with a new fiber washer. Fits Stromberg 97, 48, 81 and 40.
- A direct replacement of the old Stromberg needle and seat.
- Relies on two ball bearings to improve efficiency and eliminate the stick of the old style needles.
- Male thread: 7/16-24. Female thread: 1/2-20.
- Also available in unplated brass (9564K)