Sierra 18-3319 Water Pump Kit for Mercury and Mercruiser Sierra high-quality engine parts are designed to meet OEM specifications. This Water Pump Kit is the same as Sierra 18-3316 except the base. Includes water pump base 18-3419 replaces 46-8M0077147. For the following MercuryMariner Applications 105 Jet 0D182000 UP V 135 904646 UP 140 Jet 0D082000 UP V 150 A904646 UP V 175 6618751 UP V 200 6625221 UP V 220 ALL 18-3017 Kit Includes 1 18-3109 Water Tube Guide 1 18-3017 Impeller 1 18-3116