Rich my twin 150 HP FORD LEHMAN,s had Jabsco.years ago Bob Smith of American Diesel said they were designed to fail it was two piece pump. Wanting to get a head of the curve I replaced them with Johnson Pumps complete with gear assembly. Impellers easier to replace and it is a one piece and shorter giving me more room to remove and replace the impeller. They run like a champ Bob KOVACH Sent from my i-Pad Chief Engineer Bob Kovach (KJ4UGE) FOR SALE M/Y ALLEZ! 1992 MT50 WIDE-BODY Visit (https://tinyurl.com/y83m925f) Visit: https://www.boattrader.com/boat/1992-marine-trader-50-widebody-7286542/ (Gold Looper) 5-2-2016 MTOA2631, USCG-CWOA, WRCC, AGLCA1979