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Sierra 18-4228 Marine Propeller Spacer for Johnson/Evinrude Outboard Motors

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

18-4228
08/03/2036 10:45 PM
Sale Price

$10.81

1 left at this price

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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 18-4228 Propeller Spacer is a precision-engineered replacement component designed for Johnson and Evinrude outboard motors. This spacer ensures correct propeller positioning on the prop shaft, maintaining proper alignment and optimal performance on the water.

Sierra International is a trusted name in marine replacement parts, manufacturing components to meet or exceed original equipment specifications. This prop spacer is a direct replacement for OMC OEM part number 315810, making it a reliable, cost-effective alternative to dealer-sourced parts.

Key Features:

  • Direct replacement for OMC part number 315810
  • Designed for Johnson and Evinrude outboard motors
  • Manufactured to OEM specifications for proper fit and function
  • Ensures correct propeller shaft spacing and alignment
  • Quality construction for long-lasting marine durability

Whether you are performing routine maintenance or replacing a worn spacer, the Sierra 18-4228 delivers a dependable, drop-in fit for compatible OMC-powered outboards.

Part showed up on time and was priced cheaper than anywhere else

So far so good

Cheapest and best site

Easy and quick.

Thanks for the fast shipping!

Good price, fast checkout.

it was all good

All perfect

Website and ordering process was very easy to use.

Great price and great website layout. Seems credible.

Good image of the part and easy checkout.

Best price on the web. Very fast and easy. Thank you!

Fast and quick

first time ive order from here and my experience was great! shipping was crazy fast. and they had the best price shipped on the 2jz arp head stud set i could find. also how on their site they actually list if they have the part in stock and how many which is very helpful. ive payed for parts to find out the vender didn't even have them available. which lead to more down time. and we all hate down time :)

Was glad to find the product.

So far, so good.

Good price

Pricing the best. Easy payment through Amazon acount.

I have not received my order because it is still the same day I ordered therefore i can not comment on shipping. However I do not worry about that process at all due to the professional look autoplicity.com shows through their website. The prices are the website are the lowest I've found and in-stock quantity is great allow me to find every I needed.

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