Mikuni BN Series Single Diaphragm Carburetor for Sea-Doo 2-Stroke PWC - Used

**Application:** Mikuni BN-series single diaphragm carburetor for Sea-Doo (Bombardier) two-stroke personal watercraft — 717/720 and 787/800 rotary-valve platforms (GTI, GTS, GS, GSX, GTX, XP, SPX, HX, Speedster, Sportster, mid-1990s to early-2000s). Confirm BN38i / BN40i / BN46i variant by bore size and Sea-Doo part number. **Condition:** Used take-off. Heavy fuel varnish, surface corrosion, peeling paint on fuel pump cover, and aged diaphragms — sold as a rebuild core / rebuildable carburetor. Butterfly and shaft intact; jets and internal condition not verified. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.