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Mercury Mariner 40-60hp Thermostat & Gasket Kit (OSTK4)

Genuine Part # : 14586, 27-824853, 27-62386001

In Stock
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  • 1 YEAR


  • ISO 9001 Certified
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Thermostat opens at 120 degrees fahrenheit.

This part replaces part #: 14586, 27-824853, 27-62386001.

This part suits the following engines: Mercury Mariner 40hp 4 Stroke 2003-2016 (suits serial # 0T178500 to 0T409400 & up), Mercury Mariner 50-60hp 4 Stroke 2003-2016 (suits serial # 0T178500 to current).


About The Brand

Outboard Spares brand of parts are tested in Australia's harsh marine environment with a focus on quality and durability. Outboard Spares parts are used by professional fishermen who depend on their parts to stay on the water and in business. So next time you service your engine choose what the professionals use, choose Outboard Spares.

  • Standard Shipping is free on all orders. Oils & Lubricant products can only be sent via Standard Shipping.
  • Express Shipping is $10 flat rate.
  • Pick up is available from our warehouse at 1/84 Brunel Road, Seaford VIC 3198 between the hours of 8:30am to 3:30pm weekdays. You will be notified by email when your order is ready for pick up.

Delivery Time

Orders are dispatched same business day if ordered before 3:00pm AEDT. All orders are dispatched from Melbourne, Victoria and are sent via Australia Post.

For delivery time estimates with Australia Post please use their delivery calculator here:

If you have any questions relating to shipping, please contact us by emailing


By: on 9 May 2023
Absolutely perfect, every thing fitted and worked perfectly.

Mercury Mariner 40-60hp Thermostat & Gasket Kit (O

By: on 30 December 2022
Great product and quick service easy to install.

Very good quality part,

By: on 3 August 2022
These guys are awesome for your outboard parts, know their stuff , helpful and honest. Highly recommend.

Fitted a 2005, 50hp merc perfect.

By: on 22 June 2022
Fitted a 2005, 50hp merc perfect. real easy to fit.

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