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Review on 🚀 Sierra 18-3320 Water Pump Kit for Mercruiser/Alpha One Units S/N 6854393-0D469858 by Sam Simone

Revainrating 3 out of 5

Caution Torque - Spare Parts

According to Sierra Technical Support, the torque for the pump bolts is 60 in-lbs. According to Clymer's manual for the Merc Alpha 1 Gen 1, I used 90lb and it crushed the pump housing around both 7/16 bolts (started sagging at about 75lb so didn't get to 90). ). I used 20 inches per pound for the screw. Nice kit but deducted two stars for not making the torque information public.

Pros
  • Impressive
Cons
  • Minor