100% CORRECT PART NUMBER FOR ALL THESE MODELS: Honda ATC185 1980 Honda ATC185S 1981, 1982, 1983 Honda ATC200 1981, 1982, 1983 Honda ATC200E 1982, 1983 Honda ATC200X 1983, 1984, 1985 Honda XL185S 1979, 1980, 1981, 1982, 1983 Honda XL200R 1983, 1984 Honda XR185 1979 Honda XR200 1980, 1981, 1982, 1983, 1984 Honda XR200R 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1990, 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 ============================================================ BUT IT WILL WORK FINE IN ANY OF THE FOLLOWING.... (IT JUST HAS A tiny BIT DIFFERENT ADVANCE CURVE TO IT) 1984 ATC200ES BIG RED 1984 & 85 ATC200M 1984 85 AND 86 ATC200S 326P @ **SPARK_ADVANCER SEE_DISCRIPTION 30220-VM3-000THIS ADVANCER IS 100% CORRECT FOR THE FOLLOWING ATC'S 1984 ATC200ES BIG RED 1984 & 85 ATC200M 1984 85 AND 86 ATC200S @ *SPRING ADVANCER SPARK (SOLD_EACH) 30224-437-000 1/22M (326V)SEE # 6 TO THE LEFT 19MM OR 3/4" LONG OUTSIDE TO OUTSIDE FITS: Honda ATC185 1980 Honda ATC185S 1981, 1982, 1983 Honda ATC200 1981, 1982, 1983 Honda ATC200E 1982, 1983 Honda ATC200X 1983, 1984, 1985 Honda XL185S 1979, 1980, 1981, 1982, 1983 Honda XL200R 1983, 1984 Honda XR185 1979 Honda XR200 1980, 1981, 1982, 1983, 1984 Honda XR200R 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1990, 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 326V