Tall Fuel Filter / Water Separator - 18-7845

$7.28 On Sale
Tall Fuel Filter / Water Separator, 18-7845
SKU: 85439
Mfg# 18-7845
LFS# SIE187845
UNIT: Each
Description: Tall Fuel Filter
Out of stock - Typically Available in 3 - 6 Weeks

Sierra Tall Fuel Filter / Water Separator, 18-7845, gives your boat's engine more protection from contaminated fuel. With extra capacity, the Sierra 18-7845 has high flow and high capacity with 21 micron filtration elements for use on gasoline powered boats. The 18-7845 has 66 Pleats - More pleats means more capacity. Best flow rate of all major brands. Will not separate 2 cycle oil from gasoline. Made in the U.S.A. It's always a good idea to carry spare filter elements onboard. Filter Size: Long - 4.35" or 110.5mm


  • Rating: 21 Micron
  • Thread Pitch: 11/16-16
  • Ethanol blended fuel absorbs more water and loosens more particulates than regular fuels
  • Proper filtration is required for every horsepower engine
  • All filters flow at 90 GPH to feed even the hungriest motor


  • Fram: PS3808
  • GLM: 24940
  • Mallory: 9-37801
  • Mercruiser Stern Drive: 35-55501, 35-57250, 35-60494, 35-604941, 35-60494A5, 35-802893Q01, 35-8052691, 35-806771, 35-807172
  • Mercury Marine: 35-52456, 35-604941, 35-802893Q, 35-805269, 35-8052691, 35-807172
  • Moeller: 33324-10
  • Wix: 33225
  • Yamaha Outboard: ABB-FUELF-IL-TR

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Question: How do I find engine parts for my boat's motor?

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Read the Sierra Warranty

Returns are available within 30 days from the date you receive your order and items must be in new, resalable condition, in the manufacturer's original packaging. See Details