Used on: ARCTIC CAT SNOWMOBILE ZR 500 LE 1999 ZR 500 EFI LE 1999 ZR 500 1999-2002 ZR 500 Intl 2001 ZR 500 EFI 1999-2001 ZR 500 EFI ESR 2001 ZR 500 Cross Country 2002 ZR 500 Cross Country Intl 2002 ZR 500 LE 2002: This Donut fits in between Expansion Chamber & the Manifold.
