High-performance fuel injected engines require ultimate fuel filtration, separation of water from the fuel supply and maximum fuel flow. Sierras filter elements deliver all three of these critical performance factors. 7900-Series 10 micron filters eliminate harmful contaminants at over 90% efficiency, while removing over 98.8% of emulsified water. Theyre engineered for todays sterndrives and inboards, along with 2-cycle and 4-cycle outboards. Todays ethanol-blended fuels increase the chances of water in fuel tanks, resulting in premature wear, poor performance and component damage. Contaminants of over 10 micron size also can cause severe damage with the close tolerances of todays fuel pumps and injectors. That is why a high efficiency water separating filter is so important. Sierra 10 micron filters were independently tested to JIS, SAE J1839/J905 and ISO 4548-12 standards. Bowl - 18-7924 Filter - 18-7948 (Image features a comparable filter) Honda 17670-ZW1-801AH Mercury 35-886638 Racor S3227 Suzuki 99105-20005