Price: $6.99
Save: $2.50
(26% Off $9.49)
Part # 18-7845
2nd Day Air for $2.99 More Eligible
Fuel Filter - Sierra
Price: $27.29
Save: $9.10
(25% Off $36.39)
Part # 18-7782
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $14.20
Save: $5.79
(28% Off $19.99)
Part # 18-7866
2nd Day Air for $2.99 More Eligible
Price: $11.28
Save: $6.01
(34% Off $17.29)
Part # 18-7780
2nd Day Air for $2.99 More Eligible
Price: $6.83
Save: $1.50
(18% Off $8.33)
Part # 18-7781
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $4.35
Save: $2.14
(32% Off $6.49)
Part # 18-7829
2nd Day Air for $2.99 More Eligible
Price: $5.52
Save: $0.47
(7% Off $5.99)
Part # 18-7830
2nd Day Air for $2.99 More Eligible
Price: $5.22
Save: $2.77
(34% Off $7.99)
Part # 18-7831
2nd Day Air for $2.99 More Eligible
Price: $5.97
Save: $2.52
(29% Off $8.49)
Part # 18-7945
2nd Day Air for $2.99 More Eligible
Mallory Filter, Fuel 5/16" Inline 9-37959
Price: $4.99
Discontinued
Save: $1.78
(26% Off $6.77)
Part # 9-37959
2nd Day Air for $2.99 More Eligible
(Discontinued)
Price: $6.99
Save: $1.62
(18% Off $8.61)
Part # 9-37801
2nd Day Air for $2.99 More Eligible
Price: $28.27
Discontinued
Save: $7.06
(19% Off $35.33)
Part # 9-37965
2nd Day Air for $2.99 More Eligible
No Reviews
(Discontinued)
Price: $11.70
Save: $7.81
(40% Off $19.51)
Part # 18-7710
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $10.15
Save: $3.84
(27% Off $13.99)
Part # 18-7865
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $12.30
Save: $5.39
(30% Off $17.69)
Part # 18-7713
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $6.39
Save: $3.10
(32% Off $9.49)
Part # 18-7844
2nd Day Air for $2.99 More Eligible
Price: $7.36
Save: $3.02
(29% Off $10.38)
Part # 18-7856-1
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $7.99
Save: $1.52
(15% Off $9.51)
Part # 18-7857-1
2nd Day Air for $2.99 More Eligible
Price: $14.63
Save: $5.36
(26% Off $19.99)
Part # 18-79799
2nd Day Air for $2.99 More Eligible
Price: $15.13
Save: $9.86
(39% Off $24.99)
Part # 18-79809
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $8.10
Save: $5.27
(39% Off $13.37)
Part # 9-37808
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $73.99
Discontinued
Save: $9.00
(10% Off $82.99)
Part # 9-37966
2nd Day Air for $2.99 More Eligible
No Reviews
(Discontinued)
Price: $50.99
Save: $21.10
(29% Off $72.09)
Part # 9-37967
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $47.90
Save: $24.59
(33% Off $72.49)
Part # 18-79900
2nd Day Air for $2.99 More Eligible
Hurry! Only 1 left in stock
No Reviews
Price: $86.81
Save: $44.21
(33% Off $131.02)
Part # 18-79901
2nd Day Air for $2.99 More Eligible
Hurry! Only 1 left in stock
No Reviews
Price: $38.39
Save: $21.28
(35% Off $59.67)
Part # 18-79902
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $31.27
Save: $15.09
(32% Off $46.36)
Part # 18-79903
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $32.15
Save: $20.99
(39% Off $53.14)
Part # 18-79904
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $23.43
Save: $14.90
(38% Off $38.33)
Part # 18-79905
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $2.57
Discontinued
Save: $1.92
(42% Off $4.49)
Part # 18-7486
2nd Day Air for $2.99 More Eligible
No Reviews
(Discontinued)
Price: $2.74
Save: $1.68
(38% Off $4.42)
Part # 18-7487
2nd Day Air for $2.99 More Eligible
Hurry! Only 1 left in stock
No Reviews
Price: $5.40
Save: $3.01
(35% Off $8.41)
Part # 18-7488
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $16.24
Save: $10.87
(40% Off $27.11)
Part # 18-7955
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $8.52
Save: $2.23
(20% Off $10.75)
Part # 18-7945C
2nd Day Air for $2.99 More Eligible
Hurry! Only 1 left in stock
No Reviews
Price: $12.99
Save: $4.50
(25% Off $17.49)
Part # 9-37969
2nd Day Air for $2.99 More Eligible
No Reviews
Yamaha VST Fuel Filter, HPDI
Price: $27.07
Save: $6.25
(18% Off $33.32)
Part # 600-293
2nd Day Air for $2.99 More Eligible
Price: $9.86
Save: $6.20
(38% Off $16.06)
Part # 18-79972
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $48.57
Save: $20.12
(29% Off $68.69)
Part # 18-79973
2nd Day Air for $2.99 More Eligible
Hurry! Only 1 left in stock
No Reviews
Price: $40.33
Save: $14.71
(26% Off $55.04)
Part # 18-79978
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $36.46
Save: $9.92
(21% Off $46.38)
Part # 18-79979
2nd Day Air for $2.99 More Eligible
No Reviews
Price: $5.74
Save: $2.41
(29% Off $8.15)
Part # 18-79977
2nd Day Air for $2.99 More Eligible
Hurry! Only 1 left in stock
No Reviews
Price: $25.43
Save: $6.41
(20% Off $31.84)
Part # 18-79910
2nd Day Air for $2.99 More Eligible
Sierra
Fuel Filters and accessories for Yamaha
Full StarFull StarFull StarFull StarHalf Star
Based On 12 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
Fuel Water Separator filter
by Trevor from Otonabee, Ontario on June 25, 2017
Product was correct and shipped in a timely fashion. Very satisfied with the service.
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
filter
by Howard from Westport, Massachusetts on March 02, 2017
always happy with sierra quality
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Great product.
by Steven from Blountstown, Florida on November 29, 2016
Easily installed.
(1 of 2 people found this review helpful)
Was this review helpful?
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.
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Fuel Water Seperator
by James from Chesapeake, Virginia on July 25, 2016
Very pleased. Fast shipping.
(1 of 2 people found this review helpful)
Was this review helpful?
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.
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
A+
by Gene from Trempealeau, Wisconsin on July 15, 2015
Fits and works great
(1 of 2 people found this review helpful)
Was this review helpful?
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.
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
good product
by Peter from Flushing, New York on June 15, 2013
satisfied
(1 of 3 people found this review helpful)
Was this review helpful?
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.
(2 of 6 people found this review helpful)
Was this review helpful?
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 !!!!
(3 of 9 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Filters
by Giuseppe from Hillsborough, New Jersey on August 15, 2011
Great service
(2 of 8 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarEmpty Star
Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
fuel/water separator
by George from Pasadena, Texas on August 23, 2011
it works and is a great value for the price
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarEmpty StarEmpty Star
Review for Sierra 18-7866 Fuel Filter
by a Customer on March 18, 2009
Delivery was exceptionally fast......kudos to UPS and the handlers. Appreciate the customer service and will return for more products
(3 of 8 people found this review helpful)
Was this review helpful?
Average Customer Review for Fuel Filter - 18-7780 - Sierra
Full StarFull StarFull StarFull StarHalf Star
Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarEmpty Star
quick delivery time
by Michael from Brighton, Colorado on August 24, 2015
Product was exactly as described and delivery time was quick
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Yamaha fuel filter
by Daniel from Bend, Oregon on February 28, 2013
Quick delivery, filter waas perfect fit.
(1 of 3 people found this review helpful)
Was this review helpful?
Average Customer Review for Inline Fuel Filter - 18-7829 - Sierra
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Based On 2 Reviews | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
The Same Thing as Other Reviewer * Beware*
by William from St Pete Beach, Florida on December 21, 2014
Well, the same happened to me, searched a part number and was directed to wrong part. Shame on you. Shipping and handling more than part. Crap, had motor all apart to clean carbs and replace filter, opened box and not the right fuel hose size. Crap
(6 of 7 people found this review helpful)
Was this review helpful?
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Sierra Fuel Filter
by Pete from McAllen, Texas on May 31, 2012
I was very disappointed in this purchase. After giving my make, model, year of motor, and even serial number I got the wrong part. iBoabots said that this Sierra filter replaced the Mercury part number but it does not. I had this ordered with ample time so I could use my boat during the upcoming weekend. While I did get it in time I was not the correvt part. The problem now is that I ran fuel through it and now I cannot return it for credit. You guys have been warned....DON'T SKIMP BUY ORIGINAL PARTS!!!!
(18 of 23 people found this review helpful)
Was this review helpful?
Average Customer Review for Sierra 18-7830 Inline Fuel Filter 5/16"
Full StarFull StarFull StarFull StarFull Star
Based On 9 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
Fuel filter
by Marcel from Henrico, Virginia on May 29, 2016
Fits great, works great. Great price.
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
repeat order, met my needs
by Nick from Des Plaines, Illinois on June 05, 2015
no issues with this. 2nd time ordering for maintenance / part replacements
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
fuel filter
by Kristi from Dix, Illinois on May 08, 2015
Good product. Works well. No problems.
(1 of 4 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarEmpty Star
Iboats speed of delivery was beyond great.
by Joel from Mandan, North Dakota on April 12, 2015
Product was exactly what I ordered and came very quickly at very good price. No complants
(1 of 3 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
obm
by Jay from Omaha, Texas on October 05, 2014
good qaulity
(1 of 3 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
fuel filter
by George from Fremont, Nebraska on April 14, 2014
the fuel filter was an exact fit. Works great.
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
none
by Linda from Shelton, Connecticut on March 08, 2013
All went well with order
(1 of 4 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarEmpty Star
Fuel filter
by Milton from Mcgaheysville, Virginia on June 06, 2012
Exact fit, shipping was very fast
(3 of 5 people found this review helpful)
Was this review helpful?
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
(2 of 8 people found this review helpful)
Was this review helpful?
Average Customer Review for Sierra 18-7831 - Inline Fuel Filter
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Based On 2 Reviews | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Tohatsu fuel filter
by John from Washington, Utah on May 22, 2015
The filter was not a direct replacement and the ends to connect the hoses were not the right size much too large.
(3 of 3 people found this review helpful)
Was this review helpful?
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Inline fuel filter 18-7831
by John from Washington, Utah on May 13, 2015
Ordered a fuel filter for my 2008 Tohatsu 20 hp outboard and received a filter ok, but the filter connections were too large for the hoses on the outboard. The filter was also about 3 times the length of the filter on the motor. Ordered the item from Tohatsu and received the correct filter.
(4 of 5 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
GREAT FILTERS
by William from Cincinnati, Ohio on October 05, 2016
I've been using these filters for years. Always keep my gas clean and have more than adequate flow rate for just about any size engine.
(2 of 3 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Perfect fit
by Justin from Jasper, Georgia on July 14, 2016
Works good. Replaced my old filter. Iboats has super fast shipping.
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
The 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...
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
The 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...
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Great Filter at a Good Price
by Jeffrey from Metairie, Louisiana on May 11, 2015
Excellent filtration and excellent flow rate
(2 of 3 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Fuel Water Separating Filter
by Marc from Spokane, Washington on October 06, 2014
Fast shipping, great product
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Filters for maintenance...
by John from Richardson, Texas on September 24, 2014
Great price on the filters every boater needs for yearly maintenance!
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarEmpty Star
Good value
by Philip from Chelmsford, Massachusetts on September 01, 2013
Does what its supposed to do at a good price.
(1 of 3 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
water separators
by Vincent from Hauppauge, New York on May 15, 2013
Received in a quick time product is perfect and good quality
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
sierra water separating filter
by Peter from Bronx, New York on March 27, 2012
Works throughout the year and works great
(2 of 4 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Sierra 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!
(9 of 11 people found this review helpful)
Was this review helpful?
Average Customer Review for Mallory Filter, Fuel 5/16" Inline 9-37959
Full StarFull StarFull StarFull StarFull Star
Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
JRW
by John from Sidney, Illinois on August 31, 2011
Perfect fit.
(1 of 4 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Fuel Filter
by Jeffrey from Edmond, Oklahoma on June 11, 2011
Thank You for the prompt shipment. Filter work great.
(3 of 6 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
Exact replacement. Fast shipping.
by Charles from Bethesda, Maryland on May 04, 2017
Product works as advertised.
Was this review helpful?
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
(2 of 8 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Based On 7 Reviews | Write Review
Full StarFull StarFull StarFull StarEmpty Star
Sierra 18-7844 - Fuel Water Separator Filter
by Kirk from Bellingham, Washington on October 30, 2016
I buy them every year because they work as advertised.
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Always good
by Dave from London, Ontario on July 18, 2016
Have been using Sierra filters for years. Great product at a reasonable price
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Fuel water separator
by Paul from Carmichael, California on May 09, 2016
This was the right fit it worked perfect the price was great .
(1 of 2 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
LOOKS GOOD
by JOE from Ludington, Michigan on February 18, 2015
GOOD
(1 of 3 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
good
by Daniel from Central Square, New York on September 29, 2014
good
(1 of 3 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
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.
(15 of 17 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star
Review for Sierra 18-7844 Fuel Water Separator Filter
by a Customer on March 20, 2009
(6 of 20 people found this review helpful)
Was this review helpful?
Average Customer Review for Fuel Filter - 18-7857-1 - Sierra
Full StarFull StarFull StarFull StarFull Star
Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Star
Review for Sierra 18-7857-1 Fuel Filter
by a Customer on June 23, 2009
Its just a filter... It fit so I guess thats a good thing...
(13 of 26 people found this review helpful)
Was this review helpful?
Average Customer Review for Sierra 18-79799 Yamaha Fuel Filter
Full StarFull StarFull StarFull StarFull Star
Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Star
Terrific bargain service
by a Customer on August 05, 2015
An exact replacement for OEM product, at half the cost and delivered as promised. What more could you ask for!
Was this review helpful?
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:
Is this the correct vst filter for a 2000 150 yamaha vmax with fuel injection?
A:
If the engine model number begins with Z, LZ or VZ this VST filter will work.


Q:
2004 Yamaha 225 Vtec - Is this the correct filter?
A:
If you have access to your engine's serial number, we will have a better chance of determining whether or not this matches up.


Q:
Will this fit Mariner 135 hp, 1997 2 stroke carb. engine?
A:
Yes this will fit your engine.


Q:
Does 18-7829 work with my 9.9 HP Mercy 2001, 0T292703?
A:
Yes that's exactly what is called for your engine is that inline fuel 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:
Does this come with filter too? 18-79910 sierra?
A:
Yes it includes the filter as well.


Q:
Is this the correct filter for my 2001 F80z outboard?
A:
If you want to just replace your current one, we will need a part number off the filter.


Q:
Does this fit a 2001 115hp yamaha?
A:
This is not called for your motor. We can only cross reference by OEM number for Yamaha. Most are universal it will just depend on some specs that should be recommended by a technician (micron rating and such).


Q:
Can I use this on my 2003 Mercury 50 HP 4 stroke 50ELPTEFI? The housing assembly looks identical!?
A:
We can only confirm it works with a Yamaha outboard. We will need to know your engine serial number to look up the filter assembly for your motor.


Q:
What is the micron rating of this filter?
A:
This does not have a micron rating. We can only match it up by application.


Q:
Will ine if these filters fit a C115R Yamaha 2 Stroke 1993 Model?
A:
It fits the following C115 engine models: C115LXRQ, C115TLRP, C115TLRQ, C115TLRR, C115TXRQ, and C115TXRR.


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.


Ask a question
Question & Answer Guidelines
This product ships in 1 to 3 business days.
Add to Cart and enter your Postal Code to determine the shipping charges.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies