Attwood

Attwood 11840-7 Universal 10-Micron Fuel/Water Separator for 2-Cycle and 4-Cycle Engines

4.4 stars out of 16 reviews
(4.4)|
16 ratings
Attwood 11840-7 Universal 10-Micron Fuel/Water Separator for 2-Cycle and 4-Cycle EnginesAttwood 11840 7 Universal 10 Micron Fuel Water Separator Filter Kit with Double GasketAttwood Universal Fuel Water Separator Kit w Bracket Bundle of 2Attwood Universal Fuel Water Separator Kit w Bracket Bundle of 10Attwood Universal Fuel Water Separator Kit w Bracket Bundle of 5
Count Per Pack:1

Key item features

  • Enhanced Performance: Double seal for enhanced performance
  • Secure Connections: Outfitted with 2 brass plugs for secure connections and universal 3/8 inch ports
  • Micron Filtering: 10 micron replacement capability
  • Universal Fit: Fits all 2 and 4 cycle engines with 10 micron filter and bracket included
  • Reliable Engineering: Attwood products are both compatible and reliable, engineered and built with a never-fail attitude
  • Peak Efficiency: Keep your engine running at peak efficiency by filtering out any water that may get into the fuel system
  • Marine Expertise: Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years
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Current price is $24.95
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Comparison Chart:
MaterialSteelAttwood 11840-7 Universal 10-Micron Fuel/Water Separator for 2-Cycle and 4-Cycle EnginesBrassSeachoice 20901 Fuel/Water Separator KitMarineS3213 Boat Fuel Water Separator Marine for Mercury Yamaha Outboard 10 Micron USBrassS3213 Marine Fuel Water SeparatorBrassFuel Filter Water Separator for Yamaha & Mercury Outboards Marine Outboard Motor with 3/8" Barb x 1/4" NPT Brass Fittings Replaces# S3213, S3214, 35-60494-1, 18-7932-1, 18-17928, 35-809097AluminumSierra 18-7983-1 Aluminum 10-Micron 1/4" Fuel Water Separator Kit for Select Mercury Marine & Mercruiser Stern Drive Marine EnginesABSNew R12T Boat for -Marine Spin-On Fuel Filter / Water Separator 120AtOtherBoating Accessories New SEACHOICE Marine Fuel/Water Separator Canister SCP 20911
Weight0.08 lbAttwood 11840-7 Universal 10-Micron Fuel/Water Separator for 2-Cycle and 4-Cycle Engines2.5 lbSeachoice 20901 Fuel/Water Separator Kit-S3213 Boat Fuel Water Separator Marine for Mercury Yamaha Outboard 10 Micron US2.4 lbS3213 Marine Fuel Water Separator-Fuel Filter Water Separator for Yamaha & Mercury Outboards Marine Outboard Motor with 3/8" Barb x 1/4" NPT Brass Fittings Replaces# S3213, S3214, 35-60494-1, 18-7932-1, 18-17928, 35-8090975.8 ozSierra 18-7983-1 Aluminum 10-Micron 1/4" Fuel Water Separator Kit for Select Mercury Marine & Mercruiser Stern Drive Marine Engines1.35 lbNew R12T Boat for -Marine Spin-On Fuel Filter / Water Separator 120At-Boating Accessories New SEACHOICE Marine Fuel/Water Separator Canister SCP 20911
Accessories2 brass plugsAttwood 11840-7 Universal 10-Micron Fuel/Water Separator for 2-Cycle and 4-Cycle Engines2 brass plugsSeachoice 20901 Fuel/Water Separator Kit-S3213 Boat Fuel Water Separator Marine for Mercury Yamaha Outboard 10 Micron US-S3213 Marine Fuel Water SeparatorBarbFuel Filter Water Separator for Yamaha & Mercury Outboards Marine Outboard Motor with 3/8" Barb x 1/4" NPT Brass Fittings Replaces# S3213, S3214, 35-60494-1, 18-7932-1, 18-17928, 35-809097-Sierra 18-7983-1 Aluminum 10-Micron 1/4" Fuel Water Separator Kit for Select Mercury Marine & Mercruiser Stern Drive Marine Engines-New R12T Boat for -Marine Spin-On Fuel Filter / Water Separator 120At2 brass plugsBoating Accessories New SEACHOICE Marine Fuel/Water Separator Canister SCP 20911
Has written warrantyNoAttwood 11840-7 Universal 10-Micron Fuel/Water Separator for 2-Cycle and 4-Cycle EnginesNoSeachoice 20901 Fuel/Water Separator KitNoS3213 Boat Fuel Water Separator Marine for Mercury Yamaha Outboard 10 Micron USNoS3213 Marine Fuel Water Separator-Fuel Filter Water Separator for Yamaha & Mercury Outboards Marine Outboard Motor with 3/8" Barb x 1/4" NPT Brass Fittings Replaces# S3213, S3214, 35-60494-1, 18-7932-1, 18-17928, 35-809097NoSierra 18-7983-1 Aluminum 10-Micron 1/4" Fuel Water Separator Kit for Select Mercury Marine & Mercruiser Stern Drive Marine EnginesNoNew R12T Boat for -Marine Spin-On Fuel Filter / Water Separator 120AtNoBoating Accessories New SEACHOICE Marine Fuel/Water Separator Canister SCP 20911
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4.4 out of 5 stars
stars16 ratings11 reviews
How item rating is calculated
  1. 5 stars63% (10)
  2. 4 stars25% (4)
  3. 3 stars6% (1)
  4. 2 stars0% (0)
  5. 1 star6% (1)
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Showing 1-3 of 11 reviews

Jul 29, 2025
NatlChamp
Item details
Count per pack: 1
5 out of 5 stars review

Verified Purchase

Works well so far.

Wasn't sure this would work on my re-do of the fuel system on a vintage wood v8 runabout. Nice quality, good size and works so far with very little use. Knowing that it didn't come with hose fittings was a plus so I had them on hand.

Helpful?5GQWD50F25KG11071204
May 23, 2016
GulfSailor
5 out of 5 stars review

Verified Purchase

Freedom from Worry

Just bought a 2004 Key Largo 160CC. With the boat having an internal fuel tank, and being the third owner, I had no way of knowing the debris/water content of the fuel tank. I researched the ratings and prices of several fuel/water separators and the Attwood seems to fit my needs. Consumer ratings are high. Filters are readily available and inexpensive. Installation was quick and easy. Being dual ported, it is possible, if desired, to carry an extra fuel tank and run it through the filter also. Kit was complete with the exception of brass fittings to connect to your size fuel hoses, and gas resistant tape to seal the fittings. I also bought stainless hose clamps, just to be sure. Took the boat out and after initial priming, the motor ran smooth. Looking forward to running this tank empty and then I will change the filter and know debris in the tank went into the trash. Freedom from just one more thing to worry about. If you do not have a fuel/water separator, do yourself a favor and get one. I like this one.

Helpful?5GQWD50F25KG11071204
Sep 12, 2024
James
Item details
Count per pack: 1
5 out of 5 stars review

Verified Purchase

this is what I needed

it's called just what I need

Helpful?5GQWD50F25KG11071204