The jet kit part number for a 2002 is DJ-3150.
Works great on my 2002. Got it through Suzuki. This works
for a stock air box and filter. Fast warmup and now pulls much better at
lower rpms. I can run 500 rpms lower. Since I can go 500 rpms lower my gas mileage has stayed about the same. No flat spots no hicups.
Don't be cheap and go the harware store route.
Go the cheap route and save yourself $150!! Parts are the same!!