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- £59.12
- £59.12
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Free Returns
Description
xOverview for Mercury Mariner 40-60hp 2-Stroke engines
Meet the FASWORX outboard thermostat and housing kit, designed to fit Mercury Mariner 40-60hp 3-cylinder 2-stroke motors. This kit features a 110-degree thermostat, and is designed to replace 850055A2 and is compatible with 850055A1 and 59078A2. It targets key serial ranges for USA and BEL builds, offering a seamless upgrade path for older parts while keeping the engine's cooling system intact.
Key compatibility at a glance
- Compatible with 850055A2, 850055A1, 59078A2
- Fits 40hp 3-Cylinder 2-Stroke (USA 0G531301+ / BEL 9855139+)
- Fits 50hp 3-Cylinder 2-Stroke (USA 0G590000+ / BEL 9973100+)
- Fits 55hp 3-Cylinder 2-Stroke (USA 0G590000+ / BEL 9973100+)
- Fits 60hp 3-Cylinder 2-Stroke (USA 0G590000+ / BEL 9973100+)
What this kit offers
- 110-degree thermostat helps maintain steady cooling under load
- Quality housing and components designed for marine environments
- Clear compatibility with multiple part numbers for easier upgrades
What you get and installation tips
The kit includes the thermostat element, housing pieces and fittings needed for a straightforward swap. Before installing, verify your engine serial range matches supported numbers and prepare basic tools. If any doubt arises, consult your service manual or a marine technician.
Why choose FASWORX
- Reputable brand focused on dependable marine parts
- Parts designed for simple fitment and reliable operation
- Potential to help sustain proper engine cooling during demanding use
Real-world use cases
On family boats cruising at steady speeds, or during occasional high-load tasks like towing or hill climbs at speed, this kit could help maintain consistent temperature levels when paired with compatible engines.
FAQ
Q: What engines is this kit compatible with?
A: Fits Mercury Mariner 40-60hp 3-cylinder 2-stroke models; compatible with 850055A2, 850055A1, and 59078A2 within listed serial ranges.
Q: What is included and how might it help?
A: Includes a 110-degree thermostat and housing components; may help maintain steady cooling under load for compatible engines.
Shipping & Return
xReturns 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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