Sierra
Sierra 18-7845 - Fuel Water Separator Filter Only
Price: $6.99
Save: $2.50
(26% Off $9.49)
Part # 18-7845
2nd Day Air for $2.99 More Eligible
SHIPS TODAY!* if ordered in 1 hr 13 mins.
This item is found in the following Product Families
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
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?
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:
Will this fit my vx225 TLRA Yamaha?
A:
We will need to know the part number to your current separator filter to cross reference. Yamaha doesn't list it in the original parts list.


Ask a question
Question & Answer Guidelines
This product ships in 1 business day.
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
Do you need Professional Installation? iboats.com has teamed with a national network of independent installers that are ready to handle your installation needs.
Find your local Amtech dealer: