Replaces Part Numbers: 817275A5, 817275K05, 817275A6, 817275A4, 817275T4, 817275Q4, 18-3147, 817275Q05 Water Pump Repair Kit for MercuryAlpha 1 Gen 2 Drives 1991- 2021 Fits Mercury 200 HP 225 HP 250 HP 300 HP 3.0L EFI DFI Outboard Engines For 1991-2001 MercuryAlpha 1 For 2002-2012 MercuryAlpha 1 For 2012-2021 MercuryAlpha 1 For 1991-2001 Mercury Gen II For 2002-2012 Mercury Gen II For 2012-2021 Mercury Gen II For MerCruiserAlpha I Gen II stern drives from s/n D469859 and above For Mercury / Mariner 200 EFI (3.0L) For Mercury / Mariner 225 Carb (3.0L) For Mercury / Mariner 225 DFI For Mercury / Mariner 225 DFI (3.0L) For Mercury / Mariner 225 DFI (3.0L) For Mercury / Mariner 225 EFI (3.0L) For Mercury / Mariner 225 EFI (3.0L) For Mercury 225 PRO XS DFI (3.0L) For Mercury / Mariner 225 Seapro / Marathon Carb (3.0L) For Mercury / Mariner 250 EFI (3.0L) For Mercury 250XB EFI (3.0L) For Mercury / Mariner 3.0L EFI Seapro / Marathon Sierra Limited Lifetime Warranty