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Sierra FS84230 Marine Battery Fuse Holder 300A MRBF

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

FS84230
06/02/2036 1:58 AM
Sale Price

$19.92

In Stock (10+)

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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 FS84230 is a marine-rated battery fuse holder designed to mount directly onto the positive battery stud, providing critical circuit protection at the power source. This heavy-duty fuse holder is engineered specifically for marine environments and high-current DC applications.

Key Features:

  • 300A maximum amperage capacity for high-current protection
  • Ignition protected when used with Sierra MRBF fuses
  • Bolt-down design engineered for high-vibration marine applications
  • Standard isolated M8 stud design allows stacking of multiple terminals
  • Protective insulating cap prevents accidental shorts and contact
  • Clear fuse window provides easy visual fault indication
  • Compact design ideal for tight installation spaces
  • Meets ABYC requirements for DC main circuit protection on large battery banks
  • High interrupt rating for reliable overcurrent protection

Applications:

  • DC main circuit protection
  • Bow thruster systems
  • Inverter circuits
  • Windlass circuit protection
  • Large battery bank installations

This marine-grade fuse holder provides reliable overcurrent protection in demanding marine environments where vibration, moisture, and high electrical loads are constant challenges. The isolated stud design and protective cap ensure safe, long-lasting performance.

Products specifications

Amps

300

Color

Grey

First time great service

Quick and easy

Very easy to order.

Satisfied...just what I was looking forl.

Apparently I needed additional parts for my order. It didn't state it anywhere. When I contacted customer service, they gave me additional part numbers that had no information.

Easy straight forward.

Easy to access site with great description of product.

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