Price: $5.93
Save: $3.56
(37% Off $9.49)
Part # 18-7845
2nd Day Air for $2 More Eligible
Price: $34.00
Save: $8.49
(19% Off $42.49)
Part # 18-7852-1
2nd Day Air for $2 More Eligible
Price: $30.76
Save: $11.73
(27% Off $42.49)
Part # 18-7848-1
2nd Day Air for $2 More Eligible
Price: $26.99
Save: $6.50
(19% Off $33.49)
Part # 18-7853-1
2nd Day Air for $2 More Eligible
Hurry! Only 1 left in stock
No Reviews
Price: $31.07
Save: $18.97
(37% Off $50.04)
Part # 18-7775
2nd Day Air for $2 More Eligible
No Reviews
Price: $32.15
Save: $17.07
(34% Off $49.22)
Part # 18-7775-1
2nd Day Air for $2 More Eligible
No Reviews
Price: $63.71
Save: $15.83
(19% Off $79.54)
Part # 18-7776
2nd Day Air for $2 More Eligible
No Reviews
Price: $66.96
Save: $31.53
(32% Off $98.49)
Part # 18-7776-1
2nd Day Air for $2 More Eligible
No Reviews
Price: $73.86
Save: $35.63
(32% Off $109.49)
Part # 18-7777
2nd Day Air for $2 More Eligible
No Reviews
Price: $70.05
Save: $24.60
(25% Off $94.65)
Part # 18-7777-1
2nd Day Air for $2 More Eligible
Hurry! Only 1 left in stock
No Reviews
Fuel Water Separator Bonus Kit - Sierra
Price: $37.18
Save: $13.63
(26% Off $50.81)
Part # 18-7848-2
2nd Day Air for $2 More Eligible
Hurry! Only 1 left in stock
No Reviews
Price: $34.74
Save: $12.32
(26% Off $47.06)
Part # 18-7852-2
2nd Day Air for $2 More Eligible
No Reviews
Price: $7.88
Save: $4.61
(36% Off $12.49)
Part # 18-7846
2nd Day Air for $2 More Eligible
Price: $5.68
Save: $3.81
(40% Off $9.49)
Part # 18-7789
2nd Day Air for $2 More Eligible
Price: $74.99
Discontinued
Save: $19.67
(20% Off $94.66)
Part # 9-37855
2nd Day Air for $2 More Eligible
No Reviews
(Discontinued)
Price: $29.98
Save: $16.40
(35% Off $46.38)
Part # 9-37852
2nd Day Air for $2 More Eligible
No Reviews
Mallory Filter, Fuel Water Seperator Kit 9-37851
Price: $25.98
Save: $13.18
(33% Off $39.16)
Part # 9-37851
2nd Day Air for $2 More Eligible
Price: $29.99
Save: $9.02
(23% Off $39.01)
Part # 9-37850
2nd Day Air for $2 More Eligible
No Reviews
Price: $6.99
Discontinued
Save: $0.92
(11% Off $7.91)
Part # 9-37804
2nd Day Air for $2 More Eligible
(Discontinued)
Price: $8.99
Save: $1.82
(16% Off $10.81)
Part # 9-37803
2nd Day Air for $2 More Eligible
Price: $6.99
Save: $1.62
(18% Off $8.61)
Part # 9-37801
2nd Day Air for $2 More Eligible
Price: $44.62
(Out of stock)
Save: $17.32
(27% Off $61.94)
Part # 18-7941
2nd Day Air for $2 More Eligible
(Out Of Stock)
Price: $61.25
Save: $6.02
(8% Off $67.27)
Part # 18-7943
2nd Day Air for $2 More Eligible
No Reviews
Sierra
Fuel Water Separator Kits for OMC Sterndrive/Cobra
Full StarFull StarFull StarFull StarHalf Star
Based On 10 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
Great product.
by Steven from Blountstown, Florida on November 29, 2016
Easily installed.
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Full StarFull StarFull StarFull StarFull Star
Absolute must for all marine engines
by Rene from Wilsonville, Oregon on August 08, 2016
Works great, no fuel issues since I began using these.
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Full StarFull StarFull StarFull StarFull Star
Fuel Water Seperator
by James from Chesapeake, Virginia on July 25, 2016
Very pleased. Fast shipping.
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Full StarFull StarFull StarFull StarFull Star
Sierra 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 Star
A+
by Gene from Trempealeau, Wisconsin on July 15, 2015
Fits and works great
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Full StarFull StarFull StarFull StarFull Star
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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Full StarFull StarFull StarFull StarFull Star
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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Full StarEmpty StarEmpty StarEmpty StarEmpty Star
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 4 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
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 !!!!
(2 of 7 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
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 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 Star
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.
(4 of 4 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
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.
(4 of 4 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
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....
(30 of 33 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 Star
Sierra 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 Star
4cylinder 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 Star
Water/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 Star
Review 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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Full StarFull StarFull StarFull StarHalf Star
Based On 7 Reviews | Write Review
Full StarFull StarEmpty StarEmpty StarEmpty Star
Fuel Filter
by Billy from Gadsden, Alabama on September 07, 2015
Catalog said it was a replacement for the Volvo Penta filter. GSI series engine specs call for a 10 micron. This filter is rated 21 micron. I'll update to correct size shortly.
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
fuel
by Janusz from Burbank, Illinois on May 08, 2014
perfect match
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Full StarFull StarFull StarFull StarFull Star
Sierra fuel filter
by Juan from Lamesa, Texas on July 24, 2013
Good product
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Full StarFull StarFull StarFull StarFull Star
Great it filters!
by Paul from Brier, Washington on April 25, 2013
Works
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Full StarFull StarFull StarFull StarFull Star
Affordable and quick.
by Daniel from Hills, Iowa on July 06, 2012
I haven't had a chance to run it in the water yet but it works on the muffs. Not too much to say, it fits right and was shipped quick. Shipped out of Ankeny, IA and I live in Hills, IA so I had my parts the next morning.
(0 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
Fast service
by Bradford from Alexandria, Virginia on June 12, 2012
Need something with a quick turn around these guys are the best. Got the part within 3 days, no extra shipping charges.
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
Works
by Paul from Brier, Washington on June 13, 2011
I like IBoats!
(0 of 5 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
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.
(6 of 6 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
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.
(5 of 5 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Star
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 6 people found this review helpful)
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Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Based On 1 Review | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Does not fit my my filter mount. .
by Ronald from North Brunswick, New Jersey on May 28, 2015
You should list mount details.
(0 of 1 people found this review helpful)
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Q:
With this fit 1992 omc king cobra 351?
A:
If your original is the 21 micron then yes this will work for your motor.


Q:
I am replacing a OMC filter #174144, the center hole is 1 inch the canister is 4 inches in dia will this unit fit?
A:
Sierra cannot give dimensions, they can only match up by application. This is not the correct filter for that OEM number. The correct replacement is part 18-7846.


Q:
Will this filter replace Volvo 3862228 ?
A:
No you will need 18-7989.


Q:
What is the replacement for this discontinued item?
A:
Sierra part number 18-7846 is similar to the mallory 9-37803. Double check that the oem part being replaced is listed in the description.


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:
When will you have it in stock?
A:
Unfortunately, the manufacture does not have an ETA available for stock on this product.


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:
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:
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.


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