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Sierra 18-0670 Powerhead Base Gasket for Mercury/Mariner Outboards

Part of: Sierra Powerhead Base Gasket for Mercury/Mariner Outboard Engines

Other options in this family: Sierra 18-0319 Sierra 18-0813 Sierra 118-0319 Sierra 18-0643 Sierra 18-0988

Manufacturer

Picture for manufacturer Sierra

Part Number

18-0670
12 reviews
Sale Price

$16.40

2 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Sierra International 18-0670 is a replacement powerhead base (mounting) gasket engineered for Mercury and Mariner 2-stroke outboard engines. It provides a precise, leak-free seal between the powerhead assembly and the midsection, making it an essential component during powerhead removal, overhaul, or reinstallation.

Key Features:

  • Direct replacement for Mercury/Quicksilver OEM part numbers 27-43007, 27-430075
  • Also cross-references with Mallory 9-60043
  • Manufactured by Sierra International, a trusted leader in aftermarket marine engine components
  • Designed to meet or exceed OEM fit, form, and function standards
  • Precision-cut to match OEM bolt hole and port patterns for a tight, reliable seal
  • Protects against coolant and exhaust leaks at the powerhead base

OEM & Cross-Reference Part Numbers:

  • Mercury/Quicksilver: 27-43007, 27-430075, 430075
  • Mallory: 9-60043
  • Sierra: 18-0670

Sierra International has supplied high-quality aftermarket marine parts for over 50 years, making the 18-0670 a reliable choice for professional marine technicians and do-it-yourself boaters alike.

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fast and easy

ORDER HELLA SUPERTONES, SHIPPING PRICE WAS VERY REASONABLE, AND SHIPPED TIMELY. HIGHLY RECOMMEND THEM!!

Super easy and Quick! Called Tech. Support to confirm my part selection/fit. Really fast delivery for coming from the east coast. BUT, Part was not as pictured. I actually purchased because of the BOSAL brand and the picture was identical to the one I nee

So far so good

Great prices and quick service, they are now my go to shop for everything I need

Nice to be able to pay with Amazon for an easier purchase

Site was very easy to navigate

Very simple and easy to work on thanks

Thanks for the great price

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The shipping was prompt and the price was the best around. It arrived at my door 2 days after I ordered it. will do business with them again!

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