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Sierra 18-5898 Temperature Sender for Crusader and Mercruiser Marine Engines

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

18-5898
06/01/2036 4:47 AM
Sale Price

$22.29

In Stock (10+)

delivery box

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 18-5898 is a direct-replacement temperature sender designed for Crusader and Mercruiser marine engines, as well as OMC Sterndrive/Cobra applications. This critical engine monitoring component transmits accurate coolant temperature readings to your temperature gauge, allowing you to monitor engine operating conditions and prevent overheating damage.

Key Features:

  • 1/2 inch - 14 NPT thread size for secure installation
  • Direct replacement for multiple OEM part numbers
  • Manufactured to strict quality standards for reliable performance
  • Engineered for marine environments with corrosion-resistant materials

OEM Cross-References:

  • Crusader: 700427
  • Mercruiser: 97258A1
  • OMC Sterndrive/Cobra: 171960

Sierra Marine is a trusted aftermarket manufacturer known for producing high-quality replacement parts that meet or exceed OEM specifications. This temperature sender provides accurate temperature monitoring to help protect your marine engine investment.

Products specifications

Compatibility

Replaces Mercury 97258A1Crusader 700427OMC 171960

Type

Engine Parts

There&rsquo;s not much to say. I guess everything has gone smoothly so far.

Thanks

hi

Perfect match and great delivery timing.

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Great pricing!!

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Good prices and very good delivery timesAAAAAAAAAAAAAAAAA

The engine oil dipstick was the wrong one for my car. Perhaps their automotive model database needs to be updated.

sounds too inexpensive, but hey you only live once...

Excellent prices, I appreciate the follow up

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Easy, comfortable, smooth.

Web site is very easy to follow or use. I'm thinking of finding other parts here. The battery has been delivered so quickly. It'd be better to see the order status changed from processing to shipping (or something) to know that it actually was shipped. Bu

Quick and easy

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