Fits Mercury/Mariner 20hp and higher outboards, 9.9/15hp. 4-stroke Big Foot outboards, all MerCruiser sterndrives (except Bravo One Perf. & Blackhawk) and MHP TorqueMaster gearcases. NOTE: 2000 and newer V-6 outboards and MerCruiser Bravo drives with dual water pick-up also require dual water pick-up flush seal kit p/n 881150Q 1. Priced individually, sold in multiples of 4.