Description
O‑Ring 47 × 2 mm (Rotax Part No. 230300)
Description
An OEM-quality O‑ring designed to seal the interface between the carburettor socket and intake manifold (or compensating tube) on Rotax 912UL, ULS, iS, and 914 engines.
Key Features
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Size: 47 mm inner diameter × 2 mm cross‑section
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Constructed from fuel- and oil-resistant synthetic rubber
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Genuine Rotax part, compatible with Bing carburettor assemblies
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Used behind carburettor socket per Rotax parts diagrams
Benefits
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Ensures airtight sealing between carburettor socket and intake manifold
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Prevents vacuum leaks that can cause rough idle or poor throttle response
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Easy-to-install during routine maintenance or rebuilds
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Durable construction resists heat, fuel exposure, and engine vibration
Application Notes
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Referenced in Rotax illustrated parts catalogs (Item 14 per intake diagram)
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OEM manual and parts listings confirm usage for 912/914 engine intake sealing
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Regular replacement recommended during intake system servicing or gasket failure












