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Sierra FS40420 6 Gang ATO/ATC Fuse Block with Ground Bar

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

FS40420
06/01/2036 4:54 AM
Sale Price

$23.41

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 FS40420 is a heavy-duty 6-gang fuse block designed for marine and automotive electrical systems. This professional-grade distribution block accepts standard ATO and ATC blade-style fuses, providing reliable circuit protection for multiple accessories and electrical components.

Key Features:

  • 6 independent fuse positions for ATO/ATC blade fuses
  • 160 ampere maximum capacity for high-current applications
  • Integrated ground bus bar for simplified wiring and clean installations
  • 1/4 inch tin-plated copper tab terminals resist corrosion and ensure solid connections
  • Compact design allows mounting in tight spaces
  • Ideal for boats, RVs, off-road vehicles, and custom automotive applications

This fuse block simplifies electrical system organization by consolidating multiple circuits into a single, easy-to-access location. The tin-plated copper terminals provide excellent conductivity and long-term reliability in harsh marine environments. The included ground bar eliminates the need for multiple ground connections, reducing installation time and improving system reliability.

Products specifications

Type

Fuse Blocks

I am very pleased with the quickness my product was shipped. I have had problems with other products i have ordered once again Thank You.

Great price on Tokico D-specs and good communication. Will definately do business with them again!

user friendly site good price

great

Fast shipping! Great product! Muffler sounds amazing and will buy again!

Ordering and paying with amazon was pretty painless.

will wait till tires arrive to give full opinion

Smooth

Had product I was looking for, price was right and shipping a bit high

good and fast

Fast shipping and a great product at an unbelievable price! Thanks!

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