Mercury Fuel Water Separator Kits

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Pipe Plugs - Sierra
Your Price: $1.99
Save: $0.69
(25% Off $2.68)
Part # 18-4256 ValueShip™ Eligible
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Fuel Water Separator Filter - Sierra
Your Price: $6.99
Save: $1.72
(19% Off $8.71)
Part # 18-7844 ValueShip™ Eligible
1/4" Aluminum Short filter
Replaces OEM part #
  • MERCURY MARINE 35-807172
  • MERCURY MARINE 35-802893Q
  • YAMAHA ABB-FUELF-IL-TR (Short filter)

Not to be used on 1992 GenII 4.3L and 4.3LX engines using in-line fuel filter OE#35-80531T.

Fuel Water Separator Filter Only - Sierra
Your Price: $6.99
Save: $1.72
(19% Off $8.71)
Part # 18-7845 ValueShip™ Eligible
1/4" Aluminum Tall Filter(4.35"), extra capacity, 21 Micron Rating
Replaces OEM part #
  • MERCURY MARINE 35-807172
  • MERCURY MARINE 35-802893Q
  • MERCURY MARINE 35-60494-1
  • YAMAHA ABA-FUELF-IL-TR
  • CRUSADER 22687
  • VOLVO 855686-2
Fuel Filter - Sierra
Your Price: $19.99
Save: $5.43
(21% Off $25.42)
Part # 18-7967 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 35-18458Q3 (V6 EFI, 1995 and earlier)
  • Late model Fuel Water Separator with Sensor
Fuel Filter - Sierra
Your Price: $14.83
Save: $5.17
(25% Off $20.00)
Part # 18-7968 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY 35-18458Q4 (V6 EFI, 1996 - current)
  • Late model Fuel Water Separator with Sensor
Mallory Filter, Fuel Water Sep. 9-37801
Holiday Sale Price: $6.99
Save: $1.62
(18% Off $8.61)
Part # 9-37801 ValueShip™ Eligible
Replaces GLM #:24940
Replaces Original Equipment Manufacturer(OEM):Mercury / Volvo / Yamaha / Crusader
Replaces Original Equipment Manufacturer # (OEM #):35-807172
Fits Application:All Mercury Outboards & Mercruisers except 4.3L w/electric fuel pumps
Mallory Fuel Filter 9-37805
Holiday Sale Price: $16.99
Save: $6.91
(28% Off $23.90)
Part # 9-37805 ValueShip™ Eligible
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):35-18458Q3
Fits Application:V-6 EFI outboards 1995-earlier
Mallory Fuel Filter 9-37806
Holiday Sale Price: $15.99
Save: $4.85
(23% Off $20.84)
Part # 9-37806 ValueShip™ Eligible
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):35-18458Q4
Fits Application:V-6 EFI/DFI outboards 1996-newer
Fuel Water Separator Filter with Bonus Pack - Sierra
Fuel Water Separator Filter with Bonus Pack - Sierra
Your Price: $37.54
Save: $8.83
(19% Off $46.37)
Part # 18-7982-2 ValueShip™ Eligible
FWS Bonus Pack Kits Same as 118-7982-1 except with 2 filters
Fuel Water Separator Filter with Bonus Pack - Sierra
Fuel Water Separator Filter with Bonus Pack - Sierra
Your Price: $37.54
Save: $8.83
(19% Off $46.37)
Part # 18-7983-2 ValueShip™ Eligible
FWS Bonus Pack Kits Same as 118-7983-1 except with 2 filters
Filter Bracket - Sierra
Your Price: $33.99
Save: $12.11
(26% Off $46.10)
Part # 18-7775 ValueShip™ Eligible
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Bracket Type:
  • 3/8" Aluminum
Replaces OEM part #
  • MERCURY MARINE 89876-A3
Filter Bracket - Sierra
Your Price: $63.99
Save: $10.84
(14% Off $74.83)
Part # 18-7776 ValueShip™ Eligible
Hurry! Only 1 left in stock
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Bracket Type:
  • 3/8" Stainless
Replaces OEM part #
  • MERCURY MARINE 89876-A3
Filter Bracket - Sierra
Your Price: $74.99
Save: $22.78
(23% Off $97.77)
Part # 18-7777 ValueShip™ Eligible
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Bracket Type:
  • 1/4" Stainless
Replaces OEM part #
  • MERCURY MARINE 89876-A3
Filter Bracket - Sierra
Your Price: $26.99
Save: $4.88
(15% Off $31.87)
Part # 18-7853-1 ValueShip™ Eligible
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Bracket Type:
  • 1/4" Aluminum
Replaces OEM part #
  • MERCURY MARINE 89876A3
Mallory Bracket , 1/4" Aluminum Filter 9-37860
Mallory Bracket , 1/4" Aluminum Filter 9-37860
Your Price: $25.99
Save: $4.93
(15% Off $30.92)
Part # 9-37860 ValueShip™ Eligible
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):MERCURY/MERCRUISER
Replaces Original Equipment Manufacturer # (OEM #):89876A3
Mallory Bracket, Fuel Water Seperator, S/S w/ 1/4" inlet/outlet 9-37862
Mallory Bracket, Fuel Water Seperator, S/S w/ 1/4" inlet/outlet 9-37862
Your Price: $61.99
Save: $10.59
(14% Off $72.58)
Part # 9-37862 ValueShip™ Eligible
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Replaces Original Equipment Manufacturer(OEM):Universal
Replaces Original Equipment Manufacturer # (OEM #):N/A
Fits Application:Universal
Fuel Water Separator Kit - Sierra
Your Price: $39.99
Save: $7.51
(15% Off $47.50)
Part # 18-7775-1 ValueShip™ Eligible
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Kit type:
  • 3/8" aluminum
Contains:
  • (1) 18-7845 or 6031 Filter
  • (1) 18-7775 Bracket
  • (2) Brass Pipe Plugs
Replaces OEM part #
  • MERCURY MARINE 35-805269A4
  • MERCURY MARINE 35-60494A4
  • MERCURY MARINE 32-802893Q4
Fuel Water Separator Kit - Sierra
Your Price: $79.99
Save: $15.67
(16% Off $95.66)
Part # 18-7776-1 ValueShip™ Eligible
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Kit type:
  • 3/8" Stainless
Contains:
  • (1) 18-7845 or 6031 Filter
  • (1) 18-7776 Bracket
  • (2) Brass Pipe Plug

Replaces OEM part #
  • MERCURY MARINE 35-805269A4
  • MERCURY MARINE 35-60494A4
  • MERCURY MARINE 32-802893Q4
Fuel Water Separator Kit - Sierra
Your Price: $78.99
Save: $15.66
(16% Off $94.65)
Part # 18-7777-1 ValueShip™ Eligible
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Kit Type:
  • 1/4" Stainless
Contains:
  • (1) 18-7845 or 6031 Filter
  • (1) 18-7777 Bracket
  • (2) Brass Pipe Plugs
Replaces OEM part #
  • MERCURY MARINE 32-802893Q4
  • MERCURY MARINE 35-60494A4
  • MERCURY MARINE 35-805269A4
Fuel Water Separator with Bracket - Sierra
Your Price: $33.99
Save: $6.23
(15% Off $40.22)
Part # 18-7848-1 ValueShip™ Eligible
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Kit Type:
  • 1/4" Aluminum (short filter)
Contains:
  • (1) 18-7844 or 6041 Filter
  • (1)18-7853-1 Bracket
  • (2) 18-4256 Brass Plugs
  • For Johnson/Evinrude engines
  • For Mercury/Mariner engines
  • For Mercruiser engines

Replaces OEM part #
  • MERCURY MARINE 35-805269A4
  • MERCURY MARINE 35-60494A4
  • MERCURY MARINE 32-802893Q4
  • SUZUKI 99105-20001
  • YAMAHA ABA-SEPAR-AT-OR
Fuel Water Separator Bonus Kit - Sierra
Fuel Water Separator Bonus Kit - Sierra
Your Price: $39.99
Save: $8.81
(18% Off $48.80)
Part # 18-7848-2 ValueShip™ Eligible
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Kit Type:
  • 1/4" Aluminum (short filter)
Contains:
  • (2) 18-7844 Filters
  • (1) 18-7853-1 Bracket
  • (2) 18-4256 Brass Pipe Plugs
Replaces OEM part #
  • MERCURY MARINE 35-805269A4
  • MERCURY MARINE 35-60494A4
  • MERCURY MARINE 32-802893Q4
Fuel Water Separator Kit - Sierra
Your Price: $34.99
Save: $5.38
(13% Off $40.37)
Part # 18-7852-1 ValueShip™ Eligible
18-9004 Pipe Sealant with Teflon is recommended for use on filter bracket fitting threads

Kit Type:
  • 1/4" Aluminum (tall filter)
Contains:
  • (1) 18-7845 or 6031 Filter
  • (1) 18-7853-1 Bracket
  • (2) 18-4256 Brass Pipe Plugs

  • For Johnson/Evinrude engines
  • For Mercury/Mariner Engines
  • For Mercruiser Engines
  • For Chrysler Inboard

Replaces OEM part #
  • MERCURY MARINER 35-60494 A4
  • MERCURY MARINER 32-802893Q4
  • MERCURY MARINER 35-805269 A4
  • SUZUKI 99105-20005
  • YAMAHA ABB-SEPAR-AT-OR
  • CRUSADER 22687
  • Fuel Water Separator Bonus Pack Kit - Sierra
    Your Price: $36.99
    Save: $7.72
    (17% Off $44.71)
    Part # 18-7852-2 ValueShip™ Eligible
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    Kit Type
    • 1/4" Aluminum (tall filter)
    Contains:
    • (2) 18-7845 Filter
    • (1) 18-7853-1 Bracket
    • (2) 18-4256 Brass Pipe Plugs
    Replaces OEM part #
    • MERCURY MARINE 35-805269A4
    • MERCURY MARINE 32-802893Q4
    • MERCURY MARINE 35-805269A4
    Mallory Kit, Fuel Water Seperator, S/S w/ 3/8" inlet/outlet 9-37856
    Mallory Kit, Fuel Water Seperator, S/S w/ 3/8" inlet/outlet 9-37856
    Your Price: $78.99
    Save: $13.78
    (14% Off $92.77)
    Part # 9-37856 ValueShip™ Eligible
    No Reviews | Write Review | Ask Question
    Replaces Original Equipment Manufacturer(OEM):Universal
    Replaces Original Equipment Manufacturer # (OEM #):N/A
    Fits Application:Universal
    Mallory Kit, Fuel Water Seperator, S/S w/ 1/4" inlet/outlet 9-37855
    Your Price: $74.99 Discontinued
    Save: $19.67
    (20% Off $94.66)
    Part # 9-37855 ValueShip™ Eligible
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    Replaces Original Equipment Manufacturer(OEM):Universal
    Replaces Original Equipment Manufacturer # (OEM #):N/A
    Fits Application:Universal
    Mallory Kit, Fuel Water Seperator Kit Alum w/ 3/8" inlet/outlet 9-37852
    Holiday Sale Price: $35.99
    Save: $10.39
    (22% Off $46.38)
    Part # 9-37852 ValueShip™ Eligible
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    Replaces Original Equipment Manufacturer(OEM):Universal
    Replaces Original Equipment Manufacturer # (OEM #):N/A
    Fits Application:Universal
    Mallory Filter, Fuel Water Seperator Kit 9-37851
    Mallory Filter, Fuel Water Seperator Kit 9-37851
    Holiday Sale Price: $29.99
    Save: $9.17
    (23% Off $39.16)
    Part # 9-37851 ValueShip™ Eligible
    Replaces Original Equipment Manufacturer(OEM):Mercury / Volvo / Yamaha / Suzuki
    Replaces Original Equipment Manufacturer # (OEM #):35-802893Q4 / 35-805269A4
    Mallory Filter, Fuel Water Seperator Kit 9-37850
    Holiday Sale Price: $29.99
    Save: $9.02
    (23% Off $39.01)
    Part # 9-37850 ValueShip™ Eligible
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    Replaces Original Equipment Manufacturer(OEM):Mercruiser
    Replaces Original Equipment Manufacturer # (OEM #):35-802893Q4
    Fuel Water Separator Kit - Sierra
    Your Price: $32.93
    Save: $7.45
    (18% Off $40.38)
    Part # 18-7982-1 ValueShip™ Eligible
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    FWS Filter Kit 1/4" Alum Bracket(18-7853-1) W/ 10 Micron Long filter(18-7945)
    Fuel Water Separator Kit - Sierra
    Fuel Water Separator Kit - Sierra
    Your Price: $33.60
    Save: $7.60
    (18% Off $41.20)
    Part # 18-7983-1 ValueShip™ Eligible
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    FWS Filter Kit 1/4" Alum Bracket(18-7853-1) W/ 10 Micron Short filter(18-7944)
    Fuel Water Separator Kit - Sierra
    Your Price: $89.16
    Save: $18.07
    (16% Off $107.23)
    Part # 18-7984-1 ValueShip™ Eligible
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    FWS Filter Kit 1/4" SS Bracket(18-7777) W/ 10 Micron Long filter(18-7945)
    Fuel Water Separator Kit - Sierra
    Fuel Water Separator Kit - Sierra
    Your Price: $89.16
    Save: $18.05
    (16% Off $107.21)
    Part # 18-7985-1 ValueShip™ Eligible
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    FWS Filter Kit 3/8" SS Bracket(18-7776) W/ 10 Micron Long filter(18-7945)
    representative picture only
    Fuel Water Separator Kit - Sierra
    Your Price: $41.83
    Save: $8.63
    (17% Off $50.46)
    Part # 18-7986-1 ValueShip™ Eligible
    FWS Filter Kit 3/8" Alum Bracket(18-7775) W/ 10 Micron Long filter(18-7945)
    18-9884 Bowl Wrench - Sierra
    Your Price: $21.53
    Save: $4.81
    (18% Off $26.34)
    Part # 18-9884 ValueShip™ Eligible
    Hurry! Only 1 left in stock
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    Replaces OEM part #
    • RACOR RK22628
    For:
    • Sierra, Racor and other aftermarket filter bowls
     
    Mallory Fuel Water Separator Kit 3/8" 9-37854
    Holiday Sale Price: $36.99
    Save: $10.25
    (21% Off $47.24)
    Part # 9-37854
    No Reviews | Write Review | Ask Question
     
    Mallory Fuel Water Separator Kit 1/4" 9-37857
    Holiday Sale Price: $27.99
    Save: $8.60
    (23% Off $36.59)
    Part # 9-37857
    No Reviews | Write Review | Ask Question
     
    Mallory Mini Filter Bracket 9-37864
    Holiday Sale Price: $24.99
    Save: $4.99
    (16% Off $29.98)
    Part # 9-37864
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    Sierra
    Fuel Water Separator Kits for Mercury
    Average Customer Review for Fuel Water Separator Filter - Sierra
    Based On 3 Reviews | Write Review
    good
    by Daniel from Central Square, New York on September 29, 2014
    good
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    Sierra Fuel/Water Separator
    by Andrew from Rogers, Ohio on May 01, 2012
    With gasoline now contaning 10% ethanol, removing water from the fuel is important. Ethanol attracts moisture from the air, and moisture in the engine is bad news. I've used Sierra fuel/water separators for years, and never had any such related problems with water. They should be changed yearly, more frequently if you run more than the average.
    (12 of 13 people found this review helpful)
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    Review for Sierra 18-7844 Fuel Water Separator Filter
    by a Customer on March 20, 2009
    (4 of 17 people found this review helpful)
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    Average Customer Review for Fuel Water Separator Filter Only - Sierra
    Based On 5 Reviews | Write Review
    Fits my factory Mercruiser fuel filter header
    by Jim from Tolono, Illinois on September 15, 2013
    Nothing else to say. Fits. Seems to work. Cheap.
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    good product
    by Peter from Flushing, New York on June 15, 2013
    satisfied
    (0 of 1 people found this review helpful)
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    21 Micron filter
    by Emmett from Pearland, Texas on April 26, 2013
    This is labeled as a replacement for the Mercury 35-802893Q, but when received the specs reflect it is a 21 Micron filter! NOT the 10 Micron filer I need. I had looked for the specs on-line before ordering and they were not listed. The 10 Micron P/N is 18-7945 according to the West Marine website.
    (1 of 1 people found this review helpful)
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    water filter
    by James from Texas City, Texas on April 16, 2012
    i have always had a great experience dealing with i-boats and have always gotten quality products for a low price and these water filters for my boat are no exception. great filter for a great price !!!!
    (1 of 6 people found this review helpful)
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    Filters
    by Giuseppe from Hillsborough, New Jersey on August 15, 2011
    Great service
    (1 of 6 people found this review helpful)
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    Average Customer Review for Fuel Filter - Sierra
    Based On 1 Review | Write Review
    quick great service good product
    by Daniel from Holdenville, Oklahoma on April 07, 2014
    Unfortunately i ordered the wrong product and their customer service was helpful with returns.
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    Average Customer Review for Mallory Filter, Fuel Water Sep. 9-37801
    Based On 1 Review | Write Review
    Good Price
    by Raymond from Belvidere, New Jersey on May 27, 2011
    it is what I odered but have not used it yet
    (1 of 5 people found this review helpful)
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    Average Customer Review for Mallory Fuel Filter 9-37806
    Based On 1 Review | Write Review
    great
    by a Customer from Biloxi, Mississippi on February 25, 2013
    worked great and got it right on time
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    Based On 1 Review | Write Review
    Filter kit with Housing
    by Michael from Prattville, Alabama on June 13, 2011
    Bought this for use on my small boat, because they worked so well on my big boat. Easy to install, uses the same 10 micron filter. Just got it in last week, so I look forward to seeing if they work just as well. Got a filter kit with two filters for less than I could get just the housing locally.
    (1 of 1 people found this review helpful)
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    Based On 1 Review | Write Review
    joeboat
    by Harlan from Camp Wood, Texas on August 13, 2014
    just what I needed and arrived here quickly , plus extra filter, no more looking for one replacement time. very well built
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    Average Customer Review for Fuel Water Separator Kit - Sierra
    Based On 3 Reviews | Write Review
    Perfect for 98 Mercruiser 3.0
    by James from Haverhill, Massachusetts on August 17, 2012
    Performs as advertised, same form, fit, function as higher priced OEM offering.
    (2 of 2 people found this review helpful)
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    As described
    by Brian from Export, Pennsylvania on May 12, 2012
    Easy to mount and set up. multiple mounting options makes it easy to find a good spot for any set up.
    (3 of 3 people found this review helpful)
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    Review for Sierra 18-7852-1 Fuel Water Separator Kit
    by a Customer on June 23, 2009
    Nice kit easy to install and has several choices on how to run your fuel lines....
    (28 of 31 people found this review helpful)
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    Based On 2 Reviews | Write Review
    Great product!
    by Michael from Noblesville, Indiana on October 07, 2013
    I like the fact that the hose barbs came with the kit and that the filter was shrink wrapped to protect it. Installation was a breeze. One note for other installers: pre-fill the filter with gas before you screw it onto the housing it will make start up much easier.
    (2 of 2 people found this review helpful)
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    Great Product
    by Stephen from Hubert, North Carolina on July 04, 2013
    If you do not already have one of these installed on your boat, you should waste no time getting one soon! The one I received did not have the two plugs for the unused ports. Luckily I already had some so installing it wasn't a problem.
    (2 of 2 people found this review helpful)
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    Average Customer Review for Fuel Water Separator Kit - Sierra
    Based On 1 Review | Write Review
    super product
    by William from Cincinnati, Ohio on September 25, 2012
    This filter is great. Easy to mount, easy to change, filter works great.
    (1 of 1 people found this review helpful)
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