SKU: 51082066027

8M0139434 Mercury Marine Quicksilver Thermostat / 265G

Sale price$28.75 Regular price$31.95
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

8M0139434 Mercury Marine Quicksilver Thermostat / 265G8M0139434 265G Thermostat Fits Mercury 15hp and 20hp EFI 4 stroke outboards (serial No. 0R833820 and above) Self cleaning design allows cooling system contaminants to flush through closing surfaces Calibrated for proper cooling system temperature response Self cleaning design allows cooling system contaminants to flush through closing surfaces. Easy to replace with common tools See your owner's manual for removal of non functioning thermostat and

8M0139434 / 265G

Thermostat

  • Fits Mercury 15hp and 20hp EFI 4-stroke outboards (serial No. 0R833820 and above)
  • Self-cleaning design allows cooling system contaminants to flush through closing surfaces
  • Calibrated for proper cooling system temperature response
  • Self-cleaning design allows cooling system contaminants to flush through closing surfaces.
  • Easy to replace with common tools
  • See your owner's manual for removal of non-functioning thermostat and replacement of new thermostat
  • Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive
  • The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine original equipment replacement engine parts, oils, and accessories, but also works to serve all original equipment brands in the marine and powersports industries. It has earned a loyal following by providing the highest quality products that are tested through some of the most rigorous environments and testing procedures. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is buying performance, protection, and peace of mind. 
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 51082066027

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4.4 ★★★★★
Based on 6 reviews
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Verified Purchase
judith stevens
Phoenix, US
★★★★★ 1
Some of the components are plastic
This is not a heavy duty application what so ever . One of the flanges broke . We do not recommend this product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 5, 2024
K
Verified Purchase
Kimberly matthews
Belleville, US
★★★★★ 2
Quality control lacking
One tee conector was missing. Nothing avaliable locally that fits.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
A
Verified Purchase
Alexandra
Alexandria, US
★★★★★ 1
It doesn’t stay in
The pipe keeps coming out. Not worth the money. Not sturdy to hold a top table.
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Reviewed in the United States on February 20, 2024
E
Verified Purchase
Eric
Los Angeles, US
★★★★★ 2
Good finish, poor hardware.
Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly. Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration. Ended up running self tapping screws thru parts to complete assembly.
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Reviewed in the United States on February 26, 2024
C
Verified Purchase
Carl L. Bradley
Los Angeles, US
★★★★★ 1
Kinda flimsy…
Thought the assembly was metal, it’s some kind of PVC.
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Reviewed in the United States on September 22, 2025

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