HIMARKLIF thermostat for Yamaha outboards with durable stainless steel construction.
HIMARKLIF thermostat core showing copper components for efficient heat transfer.
HIMARKLIF thermostat seal in NBR rubber demonstrates heat and oil resistance.
HIMARKLIF thermostat kit ready for easy installation on Yamaha two-stroke engines.
HIMARKLIF compatibility highlights replacement part numbers for broad Yamaha match.
HIMARKLIF thermostat activates at 50°C to help regulate engine temperature.
HIMARKLIF thermostat for Yamaha outboards with durable stainless steel construction.
HIMARKLIF thermostat core showing copper components for efficient heat transfer.
HIMARKLIF thermostat seal in NBR rubber demonstrates heat and oil resistance.
HIMARKLIF thermostat kit ready for easy installation on Yamaha two-stroke engines.
HIMARKLIF compatibility highlights replacement part numbers for broad Yamaha match.
HIMARKLIF thermostat activates at 50°C to help regulate engine temperature.

HIMARKLIF Thermostat for Yamaha Outboard Motors | 2-Stroke 3HP-250HP Replacement

Meet the HIMARKLIF thermostat, designed to accompany Yamaha two-stroke outboard motors from 3HP to 250HP. Crafted with...
Vendor: HIMARKLIF
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£27.88
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HIMARKLIF thermostat for Yamaha outboards with durable stainless steel construction.

HIMARKLIF Thermostat for Yamaha Outboard Motors | 2-Stroke 3HP-250HP Replacement

£27.88
HIMARKLIF thermostat for Yamaha outboards with durable stainless steel construction.
HIMARKLIF thermostat core showing copper components for efficient heat transfer.
HIMARKLIF thermostat seal in NBR rubber demonstrates heat and oil resistance.
HIMARKLIF thermostat kit ready for easy installation on Yamaha two-stroke engines.
HIMARKLIF compatibility highlights replacement part numbers for broad Yamaha match.
HIMARKLIF thermostat activates at 50°C to help regulate engine temperature.

HIMARKLIF Thermostat for Yamaha Outboard Motors | 2-Stroke 3HP-250HP Replacement

£27.88
Description
Description
x

Meet the HIMARKLIF thermostat, designed to accompany Yamaha two-stroke outboard motors from 3HP to 250HP. Crafted with premium stainless steel and copper, it delivers robust heat transfer and enduring performance in demanding marine conditions. The mid seal uses NBR rubber for improved heat, corrosion, and oil resistance, and the seal is thicker to help ensure reliable sealing.

Replacement part numbers such as 688-12411-10-00, 688-12411-11-00, 6H3-12411-11-00, 6E5-12411-30-00, 6E5-12411-20-00, 6E5-12411-10-00, 6E5-12411-02, and 6E5-12411-00 are supported, offering a precise match for a broad range of Yamaha models without extensive searching.

Wide fitment for Yamaha 2-stroke outboards

The thermostat is designed to fit Yamaha 2-stroke engines from 3HP up to 250HP, covering many model variants across multiple years. This broad compatibility aims to help you locate a suitable replacement that aligns with Yamaha specifications.

  • 3A, 4A, 5C, 6C/D/J, 8C/J, 8MSH-0405, 8MSH-0406, 8MSH-0407
  • 8MSHD-2005, 9.9B Enduro, 9.9C, 15B Enduro, 20D, 25A/25B Enduro
  • 30H, 40X Enduro, 150A/ETN, 175A, 200A/ETN, 220A, 250HP (1990-2004)

How it works and potential benefits

When the operating temperature reaches about 50°C, the thermostat begins to regulate flow. This behavior may help contribute to a more stable engine temperature and potentially support consistent operation and efficiency. It is designed to work within Yamaha system expectations and to withstand marine conditions.

  • Precise temperature control for engine components
  • Durable materials built to endure saltwater and heat

Easy installation and care

Manufactured to match Yamaha specifications for fit, form, and function, the kit is designed for straightforward installation and long service life. Following proper installation steps helps ensure a reliable seal and dependable operation when you’re out on the water.

FAQ

Q: What engines is this thermostat compatible with?

A: Fits Yamaha 2-stroke engines from 3HP to 250HP, covering many model variants.

Q: How does the thermostat activate and what does it help regulate?

A: Activates at about 50°C to help regulate engine temperature and support stable operation.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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