Fits the Following Rochester Mercruiser Carburetor Numbers: 1389-9562A1,3304-9565A7, 3310-861448A1 1389-9563A1, 3310-805924A2, 3310-864940A01 1389-9564A1, 3310-806077A2, 3310-864941A01 1389-9670A2, 3310-806080A2, 3310-864942A01 1389-806077A2, 3310-806972A1, 3310-864943A01 1389-806078A2, 3310-807312A1, 3310-866140A02 1389-815396A2, 3310-807504A1, 3310-866141A02 1389-815397A2, 3310-807764A1, 3310-866142A03 3304-9565A1, 3310-861245A1, 3310-866143A03 Fits the Following Mercruiser Rochester Carburetor Applications: 120 Hp (GM 2.5L, 153 cid, Inline 4) 0A492056 - 0B531853 1986 2.5L (GM 2.5L, 153 cid, Inline 4) 0B531854 - 0C853255 1987 - 1989 140 Hp (GM 3.0L, 181 cid, Inline 4) 0A484073 - 0B450800 1986 3.0L (GM 3.0L, 181 cid, Inline 4) 0B450801 and Up 1987 - 2004 3.0LX (GM 3.0L, 181 cid, Inline 4) 0C856559 - 0K999999 1990 - 1997 165 Hp (Merc 3.7L, 224 cid, Inline 4) 0B434941 - 0B774251 1987 170 Hp (Merc 3.7L, 224 cid, Inline 4) 6916779 - 0B434940 1985 - 1989 3.7L (Merc 3.7L, 224 cid, Inline 4) 0B774252 and Up 1988 - 1989 175 Hp (GM 4.3L, 262 cid, V-6) 0B527955 - 0B773242 1987 4.3L (GM 4.3L, 262 cid, V-6) 0B773243 and Up 1988 - 2004 200 Hp (GM 5.0L, 305 cid, V-8) 0A482027 - 0B774444 1986 - 1987 5.0L (GM 5.0L, 305 cid, V-8) 0B774445 and Up 1988 - 2004 5.7L (GM 5.7L, 350 cid, V-8) 0F601000 and Up 1996 - 2004 5.7L MIE (GM 5.7L, 350 cid, V-8) 0L002003 and Up 1998 - 2004 5.7L Ski (GM 5.7L, 350 cid, V-8) 0F775200 and Up 1996 - 2004