Sierra International 18-8220 Fuse Kit - 90 Amp The Sierra 18-8220 Fuse Kit is interchangeable with the following: Mallory 9-15510, Mercruiser 88-79023A91. Each Sierra product meets or exceeds the original equipment part it replaces. Sierra Fuse Kit Meets or exceeds the original equipment quality Sierra part number: 18-8220 Interchangeable with the following: Mallory 9-15510, Mercruiser 88-79023A91