★★★★★ 5
Saved on DIY
Fit my 2021 Civic perfectly and with you tube video easy to install
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Reviewed in the United States on February 22, 2026
WSM Mercury 115-150 Hp 2.5L Optimax Piston Kit 100-28-07pk - .040 PORT SIDE
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
WSM Mercury 115-150 Hp 2.5L Optimax Piston Kit 100-28-07pk - .040 PORT SIDEWSM Mercury 115 150 Hp Optimax 2. 5 Liter Piston Kit (Kit includes Piston, Rings, Wrist Pin, & Clips) 19. 57mm Pin . 040 PORT SIDE OVER SIZE 3. 541" OEM #: 858790Y2, 858789A4, 858789T2, 858790A4, 858790T2, 2716858789A4, 2716858789T2, 2716858790A4, 2716858790T2, 2716 858789A4, 2716 858789T2, 2716 858790A4, 2716 858790T2 Applications below: Make Model CC HP Year Mariner Mercury CXL Optimax SW 115 2000 Mercury L Optimax 115 2000 Mercury L Optimax SW 115
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4.2 ★★★★★
Based on 1664 reviews
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Product Reviews
★★★★★ 5
Ease of use and price
Easy, good filters, good price never go to a dealer for them, literally took me 5 minutes to do both.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 22, 2025
★★★★★ 5
Great Value
Item came as described and fit perfectly paid the price I usually pay for the engine filter for both engine and cabin filter definitely would recommend.
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Reviewed in the United States on December 8, 2025
★★★★★ 5
Great little bang for buck and DIY savings from the Dealership Service DEPT
Easy to install and very simple to place into the correct compartments in the glove box and engine bay. Took maybe 15 minutes or less. Quality is great and the air in the cabin is so fresh now! The quality of the air filters is OEM+ which is great when trying to save some money and add value to the product. Fits perfectly in my 2020 Honda civic Sedan. Includes everything needed to replace both filters. Includes both cabin and engine air filter
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Fits 2017 Honda Civic
This fit perfect for my 2017 Honda Civic. It looks and feels super similar to the ones I removed so they seem of equal quality. As for value? Can't beat it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2025
