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Sierra 18-7985-1 Fuel Water Separator Kit 3/8 SS

Save $67.01 Save $67.01
Original price $165.00
Original price $165.00 - Original price $165.00
Original price $165.00
Current price $97.99
$97.99 - $97.99
Current price $97.99

Sierra 18-7985-1 Fuel Water Separator Kit

Industry leading fuel filter assembly for high horsepower inboards and outboards

High-performance fuel injected engines require ultimate water separation; fuel filtration and maximum fuel flow. Sierra's fuel filter assemblies deliver all three of these critical performance factors and are engineered for today’s sterndrives; inboards and 2-cycle and 4-cycle outboards. The stainless steel filter head is compact; resists corrosion and features 3/8" ports. Its compact design; makes it ideal for motor mounted applications or installations in space limited locations

Ethanol-blended fuels hold more water and can inc18-7982-2

rease the chances of water in fuel tanks; resulting in premature wear; poor performance and component damage. Sierra 7900 Series fuel filters are designed to successfully remove 99% of the emulsified water found in fuels. Contaminants over 10 microns can cause severe damage in close tolerance modern fuel pumps and injectors; Sierra filters have 90% efficiency rate of removing these harmful contaminates while maintaining fuel flow rates to meet the demands of modern high performance engines.

Key Features

  • Compact stainless steel filter head design is ideal for tight locations
  • Filter elements remove 99% of emulsified water from fuel
  • Designed to be an exact fit and meet specifications of OEM canister filters
  • 90% efficient at removing particulate contamination
  • Maintains fuel flow while filtering harmful water and debris
  • Filters independently tested to JIS; SAE J1839/J905 and ISO 4548-12 standards
  • Included filter (18-7945) replaces Mercury 35-802893Q; Yamaha MAR-FUELF-IL-TR and others
  • Filter head is compatible with certain 2 and 21 micron filter elements. See our Engine Parts Selector to explore the options


  • Application: Gasoline
  • Filtration: 10 Micron (included)
  • Fuel Flow: 90gph

FWS Filter Kit 3/8" SS Bracket(18-7776) W/ 10 Micron Long filter(18-7945)