Product Description
Ensure your engine maintains its legendary performance and fuel efficiency with the Genuine Royal Enfield Carburetor Flange O-Ring. This critical sealing component (Part No: 521200/A) is designed to sit between the carburetor flange and the intake manifold, creating a perfect airtight vacuum seal.
Over time, heat and fuel exposure can cause original O-rings to become brittle or flattened, leading to “vacuum leaks”. Such leaks often manifest as poor idling, “popping” sounds from the exhaust during deceleration, or a lean fuel-air mixture that causes the engine to overheat. Replacing your worn seal with this Genuine OEM spare restores the factory-spec air-intake integrity, ensuring smooth throttle response and consistent power delivery.
Key Features:
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OEM Precision Seal: A 100% genuine Royal Enfield part (Part No: 521200/A), manufactured to the exact tolerances of the UCE engine intake system.
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Vibration & Heat Resistant: Fabricated from high-grade synthetic rubber that maintains its elasticity under extreme engine temperatures and constant vibrations.
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Eliminates Air Leaks: Prevents unfiltered air from entering the combustion chamber, protecting your engine from lean-running damage and erratic idling.
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Perfect Maintenance Essential: Recommended for replacement whenever the carburetor is removed for cleaning or tuning to ensure a fresh, leak-free seat.
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Fuel Compatible: Specifically treated to resist degradation from modern ethanol-blended petrol (E10/E20).
Product Specifications:
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Brand: Royal Enfield Genuine Parts
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Part Number: 521200/A
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Product Type: Carburetor Flange O-Ring / Intake Seal
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Material: High-Temperature Resistant Rubber
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Weight: Approx. 5g – 20g
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Compatibility: * ✅ Royal Enfield Classic 350 (All Carbureted UCE Models)
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✅ Royal Enfield Bullet 350 / 500 (UCE Carbureted Models)
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✅ Royal Enfield Electra 350 (UCE Carbureted Models)
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✅ Thunderbird 350 / 500 (UCE Carbureted Versions)
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✅ Machismo A350 / A500 (AVL Models)
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❌ Note: Not compatible with BS6 or EFI (Fuel Injected) models.
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