‘98-‘99 Arctic Cat powder Special 600 Engine Gasket Set with Seals, 711227, ZR, ZLVertex Complete Gasket Set With Crankshaft Oil Seals. 1998 1999 Arctic Cat Powder Special 600 1998 1999 Arctic Cat Powder Special 600 EFI 1998 1999 Arctic Cat Powder Special 600 EFI LE 1999 Arctic Cat ZL 600 1999 Arctic Cat ZL 600 EFI 1999 Arctic Cat ZR 600 1998 1999 Arctic Cat ZR 600 EFI 1998 1999 Arctic Cat ZR 600 EFI LE 1998 Arctic Cat ZR 600 EFI LE XC 1999 Arctic Cat ZR 600 LE Twin Cylinder 2 Stroke Note: A Case Series