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Sierra 18-4458 Exhaust Flapper Valve 5-6 Inch Marine

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-4458
21 reviews
03/12/2036 4:57 AM
Sale Price

$76.14

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-4458 is a weather-resistant rubber exhaust flapper valve designed for marine applications with 5 to 6 inch exhaust systems. This replacement flapper prevents water from entering the exhaust system when the engine is off, protecting your engine from potential damage.

Key Features:

  • Weather-resistant rubber construction for durability in harsh marine environments
  • Fits 5 to 6 inch diameter exhaust hoses
  • Includes stainless steel hose clamp for secure installation
  • One-way valve design prevents water backflow into exhaust system
  • Direct replacement for worn or damaged exhaust flappers

This exhaust flapper valve is an essential component for maintaining your marine engine's integrity by creating a barrier against water intrusion while allowing exhaust gases to escape freely during operation.

Products specifications

Size

5" & 6"

Very content, look to shop again if need arises.

What I needed, shipping fees are higher than I expected.

A

A+

On time... and exactly what I ordered, I would recommend it to anyone

Happy

N/A

I just got it. Not sure about the rest. Thank you

Quick and easy

Great prices. Fast shipping. Huge inventory.

Search to ID the right part looks good so I bought. Sure hope it fits!

Fast and hopefully easy

Best price for a superior product and no gimmickry or BS about the product.

very fast processing received product within a few days. fair prices. will do business with again.

fast

Couldn't use paypal but other than that it was fine. Battery came with a broken top, packaging was not up to the std. of other Optima batteries I have ordered on line.

Excellent website, good price, fast shipping anda pleasure to do business with.

Found good price and reasonable shipping. Thanks. H

fast transaction

Fast shipping and saved $60 on a $399 item. However you have to verify your part #'s with the vendor. The part discription on autoplicity sometimes is not what you get. I ordered an item that said it was an O2 plug and bung but when it showed up it was just the bung plug sold separate and customer service basically said it was my bad for not checking for a more accurate discription on the Allstar web site.

Recently ordered a cargo liner and I must say, Autoplicity had the cheapest price anywhere! Excellent communication and super fast shipping! Will definitely do business with Autoplicity again! Thank you for a wonderful shopping experience!

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