Sierra 18-3606 Marine Thermostat for Mercury/Mariner Outboard Engines

Manufacturer

Sierra

Part Number

18-3606
03/14/2036 10:50 AM
Sale Price

$132.16

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3606 is a premium replacement marine thermostat designed specifically for Mercury and Mariner 3.0-liter outboard engines. This critical cooling system component ensures your engine maintains optimal operating temperature for peak performance and longevity.

Key Features:

  • Direct OEM replacement thermostat for Mercury/Mariner 3.0L engines
  • Precision-engineered to meet or exceed original equipment specifications
  • Corrosion-resistant construction for durability in harsh marine environments
  • Ensures proper engine temperature regulation for optimal performance
  • Prevents overheating and engine damage

Compatible With:

  • Mercury/Mariner 200 HP 3.0L DFI DTS (all models)
  • Mercury/Mariner 200 HP 3.0L EFI (2003 and newer, serial OT750164 and up)
  • Mercury/Mariner 200 HP DFI (1997 and newer, serial OG386496 and up)
  • Mercury/Mariner 225 HP 3.0L EFI (1999 and newer, serial OG760300 and up)
  • Mercury/Mariner 225 HP 3.0L EFI SeaPro (2004 and newer, serial OT801000 and up)
  • Mercury/Mariner 225 HP 3.0L DFI DTS (2003 and newer, serial OT599000 and up)
  • Mercury/Mariner 225 HP DFI (1998 and newer, serial OG590000 and up)
  • Mercury/Mariner 250 HP 3.0L EFI (1999 and newer, serial OG760300 and up)
  • Mercury/Mariner 250 HP Long 3.0L EFI (serial OT861319 and up)

Sierra International is a trusted name in marine engine parts, offering reliable aftermarket components that deliver OEM-quality performance at competitive prices. This thermostat is an essential maintenance item for keeping your outboard running smoothly and efficiently.

Site is nice, wish it had more filtering options, for instance, front brakes only, or rear rotors, etc.

very easy

wow you guys are the best! i sent an email because i was soo happy and then I saw the feedback offer and I'm astounded. I will recommend you to my friends in the future. this is a copy of my email- just wanted to say thank you. You guys are a life saver. I ran over my winch remote and needed a new one. not only did you have the lowest price, the shipping was crazy fast!!! THANK YOU! this is honestly the best online buying experience I have ever had and I frequently order off line

fast and easy

Autoplicity had the best price anywhere! I looked everywhere for the airaid intake system and they had it in stock. Great company!

Good customer service!!! I ordered a greddy boost controller. Took for ever but they explained why.. And everything is all good!!

I was told about Autoplicity from a friend on a car forum site that I wouldn't be disappointed with the price, quality and shipping. <br><br>I ordered my part on 7-18-12 and received my item the very next day. That's about as fast as getting some parts from the local auto parts store when they have the parts stocked in an outlying warehouse.<br><br>I will certainly look to Autoplicity first when I need to order engine and other car parts for my 87' Monte Carlo SS<br><br><br><br>

So I have an old car. It's and 83, seven years older than me. I'm also a student so I don't have much money and need to make as many repairs myself to save money. I go out to the local pep boys and auto zone to to try to find a repair manual that is for my old model but it's not available. I check online and there are very few copies on line. Autoplicity had the right manual at the lowest price by a good margin. <br><br>TLDR; Autoplicity has EVERYTHING and at a cheaper price

Awesome and fast service. Received product in 3 days! Will definitely shop here again.

Thier site was very easy to navigate and allowed me to search for parts just for my truck. Once I found the part, I happy to see the price was very reasonable and even a little bit cheaper than other sites. I was happy to see that I could check out with my amazon account. Shipping was prompt.

I had never heard of Autoplicity before placing this order. I found Autoplicity via Google and decided I'd give them a try as they were the cheapest option. <br>Autoplicity did have the lowest price. The order was shipped promptly and got to me 2 days after ordering and the next day after it was shipped. I am very happy with this purchasing experience and would purchase from Autoplicity again without any hesistation.<br>

I purchased a Volant Cool Air Intake Kit for my truck. Autoplicity had the best prices by far! Shipping costs were very reasonable and my order shipped quickly. I'll order more from them in the future.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy