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Keihin 16162-ND4-7511-M1 is the float-bowl plug screw for PWK28, PWK33, PWK35, PWK35 Quad Vent / Air Striker, PWK36 Quad Vent, PWK38, PWK38 Quad Vent / Air Striker, PWK39 and historical PWK41 carburetors. The same exact part number also applies to all PWM, all PJ and PE20–38 carburetors. The screw is shown at callout 6 in the standard PWK33 parts diagram. Its sealing O-ring is a separate component at callout 7, so the screw and seal should not be treated as the same service item. Also described as a bowl plug, drain bolt or main-jet plug screw, it closes the service opening beneath the float bowl. PWK36S and PWK38S short-body fitment is not established, and "PWK06" is a callout-based label rather than a carburetor model. Keihin MPN: 16162-ND4-7511-M1 Applications: PWK28; PWK33; PWK35; PWK35 Quad Vent / Air Striker; PWK36 Quad Vent; PWK38; PWK38 Quad Vent / Air Striker; PWK39; historical PWK41; all PWM; all PJ; PE20–38 Diagram reference: 6 Seal: separate callout-7 O-ring Diagram reference: Standard PWK33 — 6 Diagram reference: Standard PWK38 — 6 Diagram reference: PWK35/PWK36/PWK38 Quad Vent / Air Striker — 6 Diagram reference: historical PWK41 — 6
Diagram reference — Keihin FCR-MX37/FCR-MX39/FCR-MX41: 123. Exact FCR-MX applicability is limited to FCR-MX37, FCR-MX39 and FCR-MX41.
