Sierra 18-4698 Drain Fill Washer Sierra Drain Fill Washer Meets or exceeds the original equipment quality Sierra part number: 18-4698 Interchangeable with the following: Mallory 9-60100, Mercury 27-81987M, 27-81987, Yamaha 90430-08020-00, 604-45342-00-00, 90430-08801-00 Fit specific, check part numbers to ensure proper fit