This Tutti Ricambi #112 main jet gives you a specific fuel-metering option for dialing in your Dellorto or Spaco SI carburetor. Whether you are bringing a vintage Vespa back to life or fine-tuning a compatible Stella 150 2T, selecting the right main jet helps your engine receive the fuel it needs when you open the throttle.
| Application |
Fitment requirement |
| Dellorto / Spaco SI carburetors |
Compatible SI main jet stacks, including SI 20/15, 20/17, 20/20 and 24/24 applications |
| Vespa vintage large frame: VNB, VBA, VBB, VNC 125 Super, VBC 150 Super, VNL GT/GTR, VLB Sprint, VLA GL150, VSD Rally 180, VSE Rally 200 |
Requires a compatible SI carburetor and main jet stack |
| Vespa P/PX: VNX 125, VLX 150, VSX 200 E |
Requires a compatible SI carburetor and main jet stack |
| Vespa VSB GS 160 / VSC SS 180 |
Only with a compatible SI carburetor setup; model name alone does not establish jet fit |
| Genuine Stella 150 2T |
Compatible SI carburetor setup only |
Choose the size for your engine: Physical compatibility does not make #112 the correct stock or tuning size for every vehicle above. Jet selection depends on your engine, intake, exhaust and operating conditions. This is an SI main jet, not an idle jet or air-corrector jet, and is not intended for SHA, SHB, PHBG, CVK or Keihin jet systems.