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Mega SX-21 O-Ring for Venturi (2)
MEG2858
Pair of fuel-resistant rubber O-rings (MEG2858) for Mega SX-21 venturi, ensuring airtight sealing between venturi and carb body for consistent vacuum and precise fuel draw in 3.5cc nitro engines.
Crafted from durable, fuel- and heat-resistant rubber, these precision-fit seals prevent vacuum leaks at the venturi-to-carb interface, maintaining stable depression signals and smooth power delivery across the RPM band. Easy to install during venturi swaps or carb rebuilds, these factory-spec replacements restore factory tuning accuracy and engine responsiveness. Keep a set in your pit kit to ensure your Mega SX-21 breathes cleanly and performs predictably, heat after heat.
