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Sierra 18-7221 Carburetor Gasket and Diaphragm Kit for OMC

Manufacturer

Sierra

<p>For nearly six decades, Sierra has established itself as one of the marine industry's most trusted names in aftermarket engine and drive parts. Founded as a specialized marine parts manufacturer, Sierra has grown into a comprehensive supplier of replacement components, instrumentation, and accessories for both recreational and commercial boating applications. Operating from their 300,000-square-foot distribution center in Litchfield, Illinois, Sierra serves boat owners and marine technicians worldwide with an extensive catalog of parts engineered specifically for the harsh saltwater environment.</p><h3>Marine Engine Excellence</h3><p>Sierra's reputation was built on delivering precision-engineered internal engine components and drive system parts that meet or exceed OEM specifications. Their <a href="/7570-sierra-engine-gasket-set-5404">engine gasket sets</a> provide critical sealing solutions for inboard and outboard motors, while their <a href="/7570-sierra-engine-complete-assembly-15341">engine complete assemblies</a> offer comprehensive replacement options for major overhauls. Each component undergoes rigorous testing to ensure reliability in demanding marine conditions, from corrosion resistance to temperature cycling performance.</p><h3>Instrumentation and Monitoring Systems</h3><p>Accurate instrumentation is essential for boat operators to monitor engine health and prevent costly breakdowns on the water. Sierra's comprehensive line of <a href="/7570-sierra-gauges-200483">gauges</a> includes everything from fuel pressure and temperature indicators to voltmeters and trim gauges, all designed with marine-grade materials that withstand vibration, moisture, and UV exposure. Their <a href="/7570-sierra-tachometer-gauge-1488">tachometer gauges</a> deliver precise RPM readings critical for optimizing engine performance and fuel efficiency. Supporting these instruments, Sierra's <a href="/7570-sierra-gauge-resistor-47908">gauge resistors</a> ensure proper signal conditioning and accurate readings across various sensor types and engine configurations.</p><h3>Expanded Product Portfolio</h3><p>In 2022, Sierra significantly broadened its scope beyond traditional marine engine parts to encompass a wider range of boating accessories and even outdoor power equipment components. This strategic expansion brought established marine brands like Shields and Moeller under the Sierra umbrella, creating a one-stop resource for marine maintenance and replacement parts. The company now offers fuel systems, electrical components, battery charging solutions, and NMEA electronics alongside their traditional engine parts lineup.</p><h3>Quality Backed by Industry-Leading Warranties</h3><p>What sets Sierra apart in the crowded aftermarket marine parts market is their commitment to standing behind every component they manufacture. Their warranty coverage extends beyond simple part replacement—it includes shop labor, haul-out fees, towing charges, and related incidental costs should a warrantied part fail. This comprehensive protection reflects the company's confidence in their manufacturing processes and quality control standards. For boat owners facing repairs far from shore or mechanics working on customer vessels, this peace of mind is invaluable. Whether you're maintaining an outboard motor, rebuilding an inboard engine, or upgrading your boat's instrumentation, Sierra's decades of marine industry experience and commitment to quality make them a reliable choice for keeping your vessel running at peak performance.</p>

Part Number

18-7221
08/06/2036 3:45 AM
Sale Price

$23.07

In Stock (5)

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Usually delivered within 2 days

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No Hassle Returns

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-7221 is a complete carburetor gasket and diaphragm kit designed for OMC marine engines. This essential repair kit replaces OEM part number 435442 and is engineered to restore proper carburetor function in Johnson and Evinrude outboard motors.

Key Features:

  • Complete carburetor rebuild kit with gaskets and diaphragms
  • Direct replacement for OMC part number 435442
  • Manufactured to meet or exceed OEM specifications
  • Precision-cut gaskets for proper sealing and performance
  • Essential for carburetor maintenance and rebuilds

Sierra Marine is a trusted aftermarket manufacturer of marine engine parts, providing reliable replacement components for outboard motors. This kit includes all the necessary gaskets and diaphragms required for a complete carburetor service, helping to restore fuel efficiency and engine performance.

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Autoplicity had the best price on the item i wanted and also has a large selection to choose from. And they also responded quickly to a question that i had asked

The web site was easy and it said my part is in stock. I'm a little suspicious since no one else has it in stock. I will change rating from 5 star to 1 star if it turns out you don't really have the part!!!

Easy

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love the amazon pay feature

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Simple web interface

Great prices. Was a little hard to find bulbs for low beams, because it was not really descriptive.

Great service, and great price<br>They were even nice enough to give 5 dollars credit for a review<br><br>Will buy again

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