★★★★★ 5
Exelent
all the liqui moly excellent good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
Sierra WSM Thermostat Kit Mercruiser - 18-1989K, 174951, 23-806922, 805532, 8069
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Sierra WSM Thermostat Kit Mercruiser - 18-1989K, 174951, 23-806922, 805532, 8069Item#: 18 1989K Thermostat Kit Mercruiser OEM#: 174951, 23 806922, 805532, 806922 Brand: Sierra FITMENTS: Make Model Year(s) Mercruiser ALL
Quick Dispatch:
Your Sierra WSM Thermostat Kit Mercruiser - 18-1989K, 174951, 23-806922, 805532, 8069 orders ship within 1-2 business days.
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- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.4 ★★★★★
Based on 1376 reviews
Sort
Product Reviews
★★★★★ 5
IT WORKED!
I tried 4 bottles of two other products. They did not work. One bottle of Moly (in 1/2 tank of gas) fixed the problem after driving 100 miles. GREAT PRODUCT!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Speed Fast
Love love all these products my engine runs like a Porsche I’m serious I have a 2000 Honda civic dx as well as 1996 Chevy Tahoe LT I love my vehicles especially when I pour this fabulous liquid into my vehicles five stars
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 20, 2025
★★★★★ 5
Great product
Great product easy to use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
★★★★★ 4
Better
It does quite lifters a little, not as much as I would like for my 4 cyclinder turbo engine
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 2, 2024
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