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Mec Eur Main Jet #103 for SI Carbs

Mec Eur SI Carburetor Main Jets

103
$6.00
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Mec Eur Main Jet #103 for SI Carbs
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  • Mec Eur Main Jet #103 for SI Carbs
  • Mec Eur Main Jet #103 for SI Carbs
Mec Eur SI Carburetor Main Jets

Mec Eur SI Carburetor Main Jets

$6.00
Part number 94090

Check dimensions and compatibility before ordering.
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Description

This is the small, cone-shaped jet at the bottom of the main jet stack. They come in various sizes ranging 82-165. Most vintage Vespas will use one in the 85-116 range, though performance-modded engines can drink a lot more gas and use much bigger jets. The larger the number, the more fuel will flow through.



Jetting is something that takes trial and error.

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