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Water Temperature Sender 806490T

Satisfaction rating 5 out of 5 (11 Ratings)
You save $1.97. (5%) $39.5
Leaves in 3-5 days
Mercury logo Parts included in this kit

Product Description

Mercury factory part. Search for more factory parts & parts diagrams.

Parts included in this kit

Please note: Some of the included items may not be available for purchase separately and won't be listed here.

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11 Product Reviews


140hp 3 liter Mercruiser.

Repair Difficulty
Repair Time
Less than 30 mins
Speaks for its self. I used them once and the staff was so helpful and the parts perfect. This time i needed a part it was the first place in my mind. That is how it is done. Repeat customer. See you all next time some thing is needed.

Problem fixed: temp sender stopped working.

Easiest thing in the world it is right on top in front.

350 Mercruiser Magnum Ski

Repair Difficulty
Repair Time
1 to 2 hours
With Crowley I get my parts next day living in Colorado, the service is outstanding!

Problem fixed: Fresh water impeller was not working at optimal

Removed belt and pump drive from bracket, removed two rear fresh water source and fresh water feed to engine hoses. I removed the pump from the boat and removed the rear cover by extracting the six 11mm bolts. Removing the old impeller was rough as it had been in there a while and required a deal of force to separate it from the shaft. To make this easier I removed the flat side plate from the pump housing and extracted up and out. Once the impeller was out I installed the new impeller and pressed it on the shaft flush with the pump housing. I then installed the flat plate back into housing and screwed it back to the pump housing. I installed the rear cover careful to line up the new paper gasket and returned the six 11mm bolts and torqued them down. I replaced the pump into the bracket and tightened it to the bracket. Replaced and bolted on the pulley and the center nut, reinstalled the drive belt then reconnected the drive belt. After I removed the fresh water feed from the bottom of the boat and connected it to my garden hose and started the boat to check for leaks. Everything was perfect! Another perfect part from Crowley.




1976 Mercruiser 165 6 cyl

Repair Difficulty
Repair Time
Less than 30 mins
Repeat buyer, always great communication; and my orders are delivered super fast. Very happy!

Problem fixed: Leaking exhaust bellows

Took a bit of prep work (and a heat gun to soften the bellows), but pretty straight forward repair. This engine is pretty simple!

Mercruiser Alpha Gen 2 4.3L


It was my first time shopping with this seller, and it won't be my last. Great shopping experience. I bought parts for my boat engine, and even then this seller is in Denver, CO, the parts arrived in Florida within 2 days. Thank you.

Fast delivery, product as advertised, good price...would buy again from this seller.

Experience was good. Still waiting for credit for returned parts...

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Aftermarket Product Interchange

Name SKU Price Brand
Temperature Sender 18-5897 - Sierra Marine
Due to manufacturer policy OEM Mercury products can only be shipped to addresses within the United States.