128176-42080 was128176-42071 water pump impeller for all 1GM's
comes with pump cover gasket for..
128170-42090 1GM water pump cover gasket
fits all 1GM's
128990-42570 water pump impeller
Fits all 2GM20/3GM30 YEU series & all 2/3YM series
The GM YEU s..
water pump cover plate sealing o-ring for all 2YM15's, 3YM20's & 3YM30's
Fits all 2GM20/3GM30 YEU..
104211-42071 replaces part104211-42070 water pump impeller (has drive pin that fits slotted shaft)..
104211-42090 water pump cover gasket fits all YS series, all Japanese built raw water cooled 2/3GM..
124223-42092 water pump impeller (has keyway groove to fit shaft drive key)
fits all Japanese bui..
124223-42110 water pump cover gasket
fits all Japanese built fresh water cooled 2/3GMF's, 2GM20F'..
water pump cover plate sealing o-ring, fits all 4JH's 1983-1989 & all 4JH2's 1989-1999
fits all early 4JH series and 3JH2 & 4JH2 series.
supersedes p/n 129470-42531