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Fuel and Water Sensor Assembly 8M0021043

Satisfaction rating 5 out of 5 (17 Ratings)
$44.95
You save $3.38. (7%) $48.33
5+ ARRIVING SOON
Backordered
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Product Description

Mercury factory part. Search for more factory parts & parts diagrams.
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17 Product Reviews

Crowley Marine always comes through. Best store to deal with when you want the correct boat part in a timely manner
by

Mercury 40 hp 4 stroke

Repair Difficulty
Easy
Repair Time
Less than 30 mins
by

Problem fixed: Machine would not pull up any maps

Ordered the new GPS disc for the humminbird 998c si. Installed a new disk ran the cable to the back of machine.

Crowley Marine is simple and efficient!
by

Great, I really like ordering with the parts diagrams. Most part were in stock or not too far out.
by

Mercury pro XS outboard

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Easy and convenient
by

Problem fixed: Water in fuel sensor

Easy to use and replace

Great place to buy parts
by

225 merc 2 stroke Optimax

Repair Difficulty
Medium
Repair Time
1 to 2 hours
I had regular shipping, just took a little longer than expected, however they kept in contact with me about shipment. The part is original OEM. Very satisfied with the product, perfect match. Will buy from Crowley Marine again... Thank you...
by

Problem fixed: Engine was racing..

The head on the fuel sensor is plastic, the old one just broke off and I had to meticulously chisel out the plastic that was threaded inside the unit until it loosened and I screwed out the remaining piece of plastic. The new one went in without issue...Success!!!

mercury optimal 115hp

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Great service all around! Parts search function worked flawlessly, and received my order on time! Thanks much!
by

Problem fixed: fuel leak at fuel oil sensor

was an easy fix with the part finder on your site!

Opti 200

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Ok
by

Problem fixed: 4 beeps every 2 min

Took out old one put in new

Good no problems
by

Mercury 225 Optimax

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Exact part I needed, best price I could find, very happy with the overall purchase.
by

Problem fixed: Fuel leaking out of motor area, high idle.

The epoxy that is used in the water/fuel sensor part seems to last about 5 years or so. I've had two of these go out on me . The boat will still run but you will notice fuel behind the motor and a high idle. Very easy to replace need to use a 5/8 box end wrench and disconnect the wire clip and install new sensor part.

Mercury 225

Fast shipping, and no issues with the product, what more can you ask for. Good job team!
by

Excellent no problems
by

Mercury Optimax 200

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Great
by

Problem fixed: Some slight missing on idling and revving of engine at start up.

Squeezed fuel bulb and noticed fuel leak out of water sensor in vapor separator. Unplugged and screwed sensor, screwed new sensor back in. Ran perfect!

by

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Mercury 225

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Great talking to the tech service guys. They helped me so much !
by

Problem fixed: Kept turning off along w bells.

Unscrewed part , put back and plugged the water sensor in.
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Supersession Chain

Name SKU Superceding SKU
Fuel and Water Sensor Assembly VIEWING THIS PRODUCT 8M0021043 CURRENT
Water Sensor 889330 8M0021043
Due to manufacturer policy OEM Mercury products can only be shipped to addresses within the United States.