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Mishimoto 3.5 to 4 Inch Silicone Transition Coupler - Black
Mishimoto 3.5 to 4 Inch Silicone Transition Coupler - Black
Mishimoto 3.5 to 4 Inch Silicone Transition Coupler - Black
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Mishimoto 3.5 to 4 Inch Silicone Transition Coupler - Black

Marsoni M251S
Sale price$24.92
Pay 4 payments of $6.23 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Mishimoto 3.5 to 4 Inch Silicone Transition Coupler - BlackDurable hose coupler designed to securely connect piping in cooling or intake systems. Provides a tight, leak resistant seal with heat and pressure resistant construction for reliable performance and easy installation.
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Your Mishimoto 3.5 to 4 Inch Silicone Transition Coupler - Black orders ship within 1-2 business days.

Delivery Options:

  • 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.
  • 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
4.5 ★★★★★
Based on 2199 reviews
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Product Reviews
W
Verified Purchase
Will
New York, US
★★★★★ 5
2007 Honda Accord coupe
Perfect fit for a 2007 accord coupe or sedan. Fixed a noisy power steering pump straight away on a 240,000 mile car. Easy DIY fix
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 29, 2026
B
Verified Purchase
Brian
Cuba, US
★★★★★ 4
No issues
Great aftermarket o ring. If for whatever reason OEM isn’t possible, these o rings will work perfectly fine. Had no issues installing into power steering system. Still would recommend Honda o rings if you can because they are also cheap.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
J
Verified Purchase
Jeff in Iowa
Omaha, US
★★★★★ 5
Fixed noisy and leaking power steering pump
My daughters 2008 Honda Accord 2.4L 4 cylinder that had a very noisy power steering pump which was also starting to leak. I was about to buy a new pump when I found out it might just be leaking from the hoses to the pump. I bought these O rings for the hose connections at the power steering pump, and spent 15 minutes replacing them. Pump is quiet again! The suction hose can develop a leak, letting air get into the pump which creates the loud noises. This fix is all I needed, and was much cheaper and faster than replacing the power steering pump.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
J
Verified Purchase
Josh
Louisville, US
★★★★★ 5
Perfect!
Fits exactly on my 2000 civic and I have not had any issues!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
A
Verified Purchase
Amazon Customer
Massapequa, US
★★★★★ 5
Good brand
They work good so far.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2026

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