Mercury Fuel Water Separator Kits

Your Price: $195.36
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(14% Off $227.92)
Part # 8M0022130 ValueShip™ Eligible
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Fits:
  • Mercury / Mariner 135 VERADO (4-STROKE)(4 CYL.) Serial: 1B517159 & Up
  • Mercury / Mariner 150 VERADO (4-STROKE)(4 CYL.) Serial: 1B517159 & Up
  • Mercury / Mariner 175 VERADO (4-STROKE)(4 CYL.) Serial: 1B517159 & Up
  • Mercury / Mariner 200 VERADO (4-STROKE)(4 CYL.) Serial: 1B517159 & Up
  • Mercury / Mariner 200 VERADO (4-STROKE)(6 CYL.) Serial: 1B517434 & Up
  • Mercury / Mariner 200 PRO VERADO (4-STROKE)(6 CYL.) Serial: 2B034840 & Up
  • Mercury / Mariner 225 VERADO (4-STROKE)(6 CYL.) Serial: 1B517434 & Up
  • Mercury / Mariner 250 VERADO (4-STROKE)(6 CYL.) Serial: 1B517434 & Up
  • Mercury / Mariner 250 PRO VERADO (4-STROKE)(6 CYL.) Serial: 1B830170 & Up
  • Mercury / Mariner 275 VERADO (4-STROKE)(6 CYL.) Serial: 1B517434 & Up
  • Mercury / Mariner 300 VERADO (4-STROKE)(6 CYL.) Serial: 1B517434 & Up
  • Mercury / Mariner 300 PRO VERADO (4-STROKE)(6 CYL.) Serial: 1B830170 & Up
  • Mercury 350SCi Verado Serial: 1B716557 & Up
Your Price: $18.50
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(14% Off $21.58)
Part # 18458T 4 ValueShip™ Eligible
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Fits:
  • Mercury 110 Jet (2.5L) Serial: 1B690542 & UP
  • Mercury / Mariner V-135 DFI (2.5L) Serial: 0T801000 & UP
  • Mercury 150 Pro XS (2.5L) Serial: 1B690542 & UP
  • Mercury / Mariner V-150 DFI (2.5L) Serial: 0T801000 & UP
  • Mercury 175 PROXS (2.5L) Serial: 1B516339 & UP
  • Mercury / Mariner V-175 DFI (2.5L) Serial: 0T801000 & UP
  • Sportjet 240 EFI Jet Drive (Powerhead & Pump) (including M2) Serial: 0E406400 & UP
  • Mercury 250XB EFI (3.0L) Serial: 0G980600 THRU 0T800999
Your Price: $5.85
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(34% Off $8.98)
Part # 18-7844 ValueShip™ Eligible
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21 Micron Fuel Filter

Features:

  • Protects the motor against ethanol. The ethanol in fuel absorbs more water and will loosen more particulants than regular fuels.
  • Provides proper filtration, as is required for any size of engine
  • Flows at 90 GPH to be compatible most engines

Specifications:

  • Rating: 21 Micron
  • Filter Size: 3.875" (Short)


Replaces OEM part #

  • MERCURY MARINE 35-807172
  • MERCURY MARINE 35-802893Q
  • MERCURY MARINE 35-802893Q01
  • MERCURY MARINE 35-806771
  • MERCURY MARINE 35-8052691
  • MERCURY MARINE 35-604941
  • MERCURY MARINE 35-60494A5
  • MERCURY MARINE 35-57250
  • MERCURY MARINE 35-55501
  • MERCURY MARINE 35-52456
  • MERCURY MARINE 35-60494
  • MERCURY MARINE 35-805269

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

Your Price: $5.93
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(34% Off $9.07)
Part # 18-7845 ValueShip™ Eligible
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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
Your Price: $17.11
Save: $9.14
(34% Off $26.25)
Part # 18-7967 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 35-18458Q3 (V6 EFI, 1995 and earlier)
  • Late model Fuel Water Separator with Sensor
Your Price: $13.74
Save: $7.45
(35% Off $21.19)
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
Fuel Water Separator Filter with Bonus Pack - Sierra
Your Price: $30.34
Save: $17.46
(36% Off $47.80)
Part # 18-7982-2 ValueShip™ Eligible
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FWS Bonus Pack Kits Same as 118-7982-1 except with 2 filters
Fuel Water Separator Filter with Bonus Pack - Sierra
Your Price: $24.24
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(49% Off $47.80)
Part # 18-7983-2 ValueShip™ Eligible
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FWS Bonus Pack Kits Same as 118-7983-1 except with 2 filters
Your Price: $27.69
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(42% Off $48.53)
Part # 18-7775 ValueShip™ Eligible
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Bracket Type:
  • 3/8" Aluminum
Replaces OEM part #
  • MERCURY MARINE 89876-A3
Your Price: $58.32
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(24% Off $77.15)
Part # 18-7776 ValueShip™ Eligible
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Bracket Type:
  • 3/8" Stainless
Replaces OEM part #
  • MERCURY MARINE 89876-A3
Your Price: $44.80
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Part # 18-7777 ValueShip™ Eligible
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Bracket Type:
  • 1/4" Stainless
Replaces OEM part #
  • MERCURY MARINE 89876-A3
Your Price: $26.99
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Part # 18-7853-1 ValueShip™ Eligible
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Bracket Type:
  • 1/4" Aluminum
Replaces OEM part #
  • MERCURY MARINE 89876A3
Your Price: $32.15
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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
Your Price: $49.86
Save: $45.80
(47% 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
Your Price: $56.30
Save: $38.35
(40% 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
Your Price: $30.76
Save: $10.52
(25% Off $41.28)
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
Your Price: $37.18
Save: $13.12
(26% Off $50.30)
Part # 18-7848-2 ValueShip™ Eligible
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Hurry! Only 1 left in stock
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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
Your Price: $34.00
Save: $7.55
(18% Off $41.55)
Part # 18-7852-1 ValueShip™ Eligible
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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

Details:

  • Sierra fuel water separators remove over 99.8% of emulsified water from your gasoline
  • Able to supply even the biggest engine with a 90 GPH flow.
  • Prevent damage to sensitive inboard, sterndrive and outboard fuel injection systems
  • Material: Aluminum (Tall Filter)
  • Rating: 21 Micron
  • Size: 1/4" or 6.4mm

    Replaces OEM part #
  • MERCURY MARINER 35-60494 A4
  • MERCURY MARINER 32-802893Q4
  • MERCURY MARINER 35-805269 A4
  • SUZUKI 99105-20005
  • YAMAHA MAR-SEPAR-AT-OR
  • CRUSADER 22687
Your Price: $32.99
Save: $11.72
(26% 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
Your Price: $27.42
Save: $14.21
(34% Off $41.63)
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
Your Price: $27.26
Save: $15.00
(35% Off $42.26)
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)
Your Price: $57.59
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(47% Off $110.54)
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
Your Price: $57.59
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Part # 18-7985-1 ValueShip™ Eligible
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Hurry! Only 1 left in stock
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FWS Filter Kit 3/8" SS Bracket(18-7776) W/ 10 Micron Long filter(18-7945)
Fuel Water Separator Kit - Sierra
View Larger Photo
representative picture only
Your Price: $37.46
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Part # 18-7986-1 ValueShip™ Eligible
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FWS Filter Kit 3/8" Alum Bracket(18-7775) W/ 10 Micron Long filter(18-7945)
Your Price: $18.99
Save: $7.35
(27% Off $26.34)
Part # 18-9884 ValueShip™ Eligible
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Replaces OEM part #
  • RACOR RK22628
For:
  • Sierra, Racor and other aftermarket filter bowls
 
Your Price: $21.27
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(54% Off $47.24)
Part # 9-37854
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Hurry! Only 1 left in stock
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Your Price: $1.89
Save: $0.79
(29% Off $2.68)
Part # 18-4256 ValueShip™ Eligible
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Your Price: $5.37
Save: $2.36
(30% Off $7.73)
Part # 18-7945 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 35-802893Q
  • YAMAHA ABB-FUELF-IL-TR (long filter 4.35")
90 GPH/10 Micron Filtration, Over 90% Efficiency
Your Price: $7.88
Save: $3.87
(32% Off $11.75)
Part # 18-7846 ValueShip™ Eligible
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Replaces OEM part #
  • OMC 502905
  • CRUSADER 98041
Additional Details:
  • Rating: 21 Micron
Your Price: $6.14
Save: $5.18
(45% Off $11.32)
Part # 18-7945C
SHIPS TOMORROW!* if ordered in 21 hrs 27 mins.
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Mercury
Fuel Water Separator Kits for Mercury
Full StarFull StarFull StarFull StarFull Star Based On 6 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarAlways good
by Dave from London, Ontario on July 18, 2016
Have been using Sierra filters for years. Great product at a reasonable price
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Full StarFull StarFull StarFull StarFull StarFuel water separator
by Paul from Carmichael, California on May 09, 2016
This was the right fit it worked perfect the price was great .
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Full StarFull StarFull StarFull StarFull StarLOOKS GOOD
by JOE from Ludington, Michigan on February 18, 2015
GOOD
(0 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Stargood
by Daniel from Central Square, New York on September 29, 2014
good
(0 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarSierra 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.
(14 of 15 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarReview for Sierra 18-7844 Fuel Water Separator Filter
by a Customer on March 20, 2009
(5 of 18 people found this review helpful)
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Full StarFull StarFull StarFull StarHalf Star Based On 8 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarFuel Water Seperator
by James from Chesapeake, Virginia on July 25, 2016
Very pleased. Fast shipping.
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Full StarFull StarFull StarFull StarFull StarSierra 18-7845 filter
by Thomas from Bemidji, Minnesota on June 18, 2016
Iboats had the best online price for this filter. They also have shipping rates that are lower than most other online retailers of boating accessories. Great company to deal with.
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Full StarFull StarFull StarFull StarFull StarA+
by Gene from Trempealeau, Wisconsin on July 15, 2015
Fits and works great
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Full StarFull StarFull StarFull StarFull StarFits 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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Full StarFull StarFull StarFull StarFull Stargood product
by Peter from Flushing, New York on June 15, 2013
satisfied
(0 of 1 people found this review helpful)
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Full StarEmpty StarEmpty StarEmpty StarEmpty Star21 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 3 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Starwater 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 !!!!
(2 of 7 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarFilters
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 Sierra 18-7967 Fuel Filter
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Starquick 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 Sierra 18-7968 Fuel Filter
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarFuel Filter.
by Dirk from Cinnaminson, New Jersey on May 09, 2016
Quality as good as OEM.
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Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarFilter 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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Full StarFull StarFull StarFull StarEmpty Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarEmpty Starjoeboat
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
(1 of 1 people found this review helpful)
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Average Customer Review for Sierra 18-7852-1 Fuel Water Separator Kit
Full StarFull StarFull StarFull StarFull Star Based On 3 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarPerfect 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.
(4 of 4 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarAs 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.
(4 of 4 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarReview 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....
(30 of 33 people found this review helpful)
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Average Customer Review for Sierra 18-7986-1 Fuel Water Separator Kit
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Starsuper 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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Full StarFull StarFull StarFull StarEmpty Star Based On 10 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarPerfect fit
by Justin from Jasper, Georgia on July 14, 2016
Works good. Replaced my old filter. Iboats has super fast shipping.
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Full StarEmpty StarEmpty StarEmpty StarEmpty StarThe 10 Micron Long does not work on my boat
by Roderick from Toms River, New Jersey on June 22, 2015
Did not work for my 7.4 MPIs L29 mercruiser engines... The fuel flow was not sufficient an starved the engines... I wasted the three of these filters... I am only going to used OEM or Quicksilver from now on...
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Full StarEmpty StarEmpty StarEmpty StarEmpty StarThe 10 Micron Long does not work on my boat
by Roderick from Toms River, New Jersey on June 22, 2015
Did not work for my 7.4 MPIs L29 mercruiser engines... The fuel flow was not sufficient an starved the engines... I wasted the three of these filters... I am only going to use OEM or Quicksilver from now on...
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Full StarFull StarFull StarFull StarFull StarGreat Filter at a Good Price
by Jeffrey from Metairie, Louisiana on May 11, 2015
Excellent filtration and excellent flow rate
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Full StarFull StarFull StarFull StarFull StarFuel Water Separating Filter
by Marc from Spokane, Washington on October 06, 2014
Fast shipping, great product
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Full StarFull StarFull StarFull StarFull StarFilters for maintenance...
by John from Richardson, Texas on September 24, 2014
Great price on the filters every boater needs for yearly maintenance!
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Full StarFull StarFull StarFull StarEmpty StarGood value
by Philip from Chelmsford, Massachusetts on September 01, 2013
Does what its supposed to do at a good price.
(0 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Starwater separators
by Vincent from Hauppauge, New York on May 15, 2013
Received in a quick time product is perfect and good quality
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Full StarFull StarFull StarFull StarFull Starsierra water separating filter
by Peter from Bronx, New York on March 27, 2012
Works throughout the year and works great
(1 of 2 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarSierra Filters Work Great
by Michael from Prattville, Alabama on June 13, 2011
I switched to the 10 micron fuel/water separator filter in 2008 and have had great service from them. I change them every 50 hours and keep spares on the boat. I've never had a clog and I don't have issues with the 10% ethanol fuel I'm running. Great price too!
(6 of 7 people found this review helpful)
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Average Customer Review for Sierra 18-7846 Fuel Filter
Full StarFull StarFull StarFull StarFull Star Based On 4 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarSierra fuel filter
by Roger from Greenfield, Indiana on September 14, 2015
Shipped quickly- worked perfect.
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star4cylinder omc
by Mark from Adrian, Michigan on June 07, 2013
Part was a perfect fit for the 1991 omc 4 cylinder i/o shipping on time as promised product arrived undamaged
(2 of 3 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarWater/Fuel filter
by Thomas from Pearland, Texas on December 26, 2011
Very satisfied, shipped quickly.
(3 of 4 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarReview for Sierra 18-7846 Fuel Filter
by a Customer on June 30, 2009
Great price for a quality product !!
(7 of 17 people found this review helpful)
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Q:
Is this the same as mercury part 35-18458t4?
A:
Yes that cross references with that OEM number.
Q:
I have a merc cruiser 5.7 LX EFI Gen. Current separator is Merc 35-802893T. Which Sierra Separator can I use? See 18- 7945 and 7944 and 7845 and 7844, but all say replace a 35-802893Q and I have series T.?
A:
Unfortunately, the manufacturer only carries for the Q series.
Q:
Does this replace a mallory 9-37815 or OEM 981911?
A:
No this is the correct one: http://www.iboats.com/Replacement-Canister-Filter-18-7861-Sierra/dm/view_id.173336
Q:
Does it come with the gasket and O-ring?
A:
Yes. The O-ring is attached to the filter and it acts as a seal. There is no gasket necessary.
Q:
Do you carry the gasket and o ring for this filter?
A:
No. The O-ring is attached to the filter and it acts as a seal. There is no gasket necessary.
Q:
Is there a mounting bracket for this filter?
A:
There is a bracket with this filter.
Q:
How can I determine if I need to replace my fuel/water separating filter for a 4.2L 1989 MerCruiser with 1/4" outlet?
A:
It needs to be changed every 50 hours or once a year.
Q:
I have an older boat, it has a water fuel separator filter (probably original). On the front of the filter, clearly states Sierra 18-7848, on the back, states "replaces OMC (174144). Is this the right filter? On the front, there is only 18-7848, there is no -1 at the end. Thanks?
A:
The "-1" indicates packaging only. It is the same part.
Q:
Can youbuy just the filter or does it only come in a kit?
A:
Filter is 18-7844.
Q:
My fule lines are 3/8 id, will this filter work for me ?
A:
Sierra cannot match it up by measurements. They can only match it up by engine application. Contact us at the number at the top of the page for more assistance.
Q:
Does this fit on a GM 302 Inboard engine. 2001 Glastron Volvo Penta ???
A:
Please call or chat in with engine info to confirm, we need manufacturer name, horse power, model/serial number.
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