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Sierra 18-7057 Carburetor Needle and Seat Assembly Carburetors & Accessories - 078

Part of: Sierra Carburetor Needle and Seat Assembly Carburetors & Accessories

Other options in this family: Sierra 18-7233 Sierra 118-7041 Sierra 18-7061 Sierra 118-7061 Sierra 118-7057

Manufacturer

Picture for manufacturer Sierra

Part Number

18-7057
13 reviews
Sale Price

$10.55

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Sierra 18-7057 is a precision-engineered carburetor needle and seat assembly designed for Mercury and Mariner outboard engines. This critical fuel system component features a .078-inch orifice size and ensures proper fuel metering and shut-off within the carburetor float bowl.

Key Features:

  • Precision .078-inch needle and seat orifice for accurate fuel flow control
  • Direct replacement for Mercury/Mariner OEM parts
  • Manufactured to exacting specifications for reliable performance
  • Helps prevent fuel flooding and ensures proper carburetor operation
  • Essential component for carburetor rebuild and maintenance

This needle and seat assembly is a vital wear component in marine carburetors. A worn or damaged needle and seat can cause fuel overflow, poor engine performance, and difficult starting. Sierra Marine parts meet or exceed OEM specifications, making this an excellent choice for routine maintenance or carburetor rebuilds on compatible Mercury and Mariner outboard motors.

Fast and easy to order. Fast delivery and fit perfect.

Easy checkout

So far is been great! Thanks

So far all was intuitive and easy to navigate.

Great

Very easy to place order

Best price and quick shipping. There was no tracking info provided but my items came in less than a week.

you say you have the item in stock

Good

Good price and great to know where to find these kind of conectors

This is the first time I've ordered from Autoplicity. I found they had the best price on the item I was looking for and decided to try them. I ordered this item yesterday(Sunday) and was just informed that it shipped. That is quick. I am pleased with their customer service and will use them as my first source.

I ordered a lower control arm for my 2002 MERCEDES S500.<br>The order was shipped fast and the price was way lower than any of the competitors.I highly recommend AUTOPLICITY.COM

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