Idle Screw Grommet for Largeframe Vespas

Rubber Grommet for Idle Screw on Largeframe Vespas

This rubber grommet seals the hole where the idle-speed screw passes into the air box on largeframe Vespas. It works with models built after 1959, with the exception of the GS and SS versions. As one of the vintage Vespa scooter parts we carry, it helps the air box system work as intended.

How It Works and Fitting

The grommet sits where the idle-speed screw enters the upper part of the air box, blocking unwanted air from getting in. It's a simple swap-in piece and an easy item to keep on hand when maintaining a classic Vespa.

When to Swap It Out

Air leaking in or an idle that won't hold steady can both point to a worn grommet. Checking it now and then helps keep the engine running well.

Specifications

• Material: Rubber
• Position: Idle-speed screw opening in air box
• OEM Part Number: 028444
• Fits: Post-1959 largeframe Vespas, except GS and SS; Genuine Stella 2T carburetor and air box

Compatibility

Compatible with:

• Genuine Stella 2T (T8 Stella 2T carburetor and air cleaner diagram)
• Genuine Stella 150 2T
• Vespa VNL GT/GTR, VLB Sprint, VNC 125 Super
• Vespa VBA, VBB, VBC 150 Super, VSD Rally 180, VSE Rally 200
• Vespa VSX P/PX 200 E, VLX P/PX 150, VNX P/PX 125
• Vespa VNB and VLA GL150

Location on diagram: part #4 on the carburetor and air cleaner diagram for the Stella 2T.

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