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Engineered Marine Products 75-00400 Marine Engine Thermostat

Manufacturer

Engineered Marine Products

<h3>About Engineered Marine Products (EMP)</h3><p><strong>Engineered Marine Products</strong> — known throughout the industry as EMP — has been a trusted name in marine engine service parts for over 40 years. <a href="/13199-engineered-marine-products">EMP</a> supplies OEMs, distributors, dealers, and professional rebuilders worldwide with high-quality components designed to keep outboard, sterndrive, and inboard engines running reliably on the water.</p><p>What sets EMP apart is its unwavering commitment to OEM-grade engineering. Every component in the EMP catalog is manufactured to meet or exceed original equipment specifications, giving marine technicians and boat owners confidence that a part will fit correctly and perform consistently in demanding freshwater and saltwater environments.</p><h3>A Comprehensive Marine Parts Catalog</h3><p>EMP&apos;s product range spans virtually every critical system of a marine engine. The brand&apos;s catalog — organized around outboards, inboard/sterndrive, and specialty marine applications — covers fuel systems, gearcases, engine internals, cooling systems, steering and controls, seals and gaskets, transom components, and propellers. This breadth makes EMP a reliable single-source supplier for multi-system service jobs.</p><p>At the heart of the EMP lineup are <a href="/13199-engineered-marine-products-fuel-pumps-201310">marine fuel pumps</a>, including complete assemblies, VRO replacement units, and repair kits engineered to restore dependable fuel delivery across a wide range of Mercury, Mariner, Johnson, Evinrude, and other popular engine brands. Consistent fuel delivery is foundational to smooth starts and efficient engine operation, and EMP&apos;s fuel system offerings reflect that priority.</p><p>EMP is equally well-regarded for its <a href="/13199-engineered-marine-products-trim-and-tilt-units-201108">trim and tilt units</a> and associated <a href="/13199-engineered-marine-products-tilttrim-motors-201071">tilt/trim motors</a> — the hydraulic and electrical components that give boaters precise control over engine angle. Whether trimming out for high-speed performance or trimming in to navigate shallow water, a reliable tilt/trim system is essential, and EMP parts are engineered to hold up to the corrosive marine environment.</p><p>Below the waterline, EMP&apos;s <a href="/200345-drive-gearcase-parts-engineered-marine-products-13199">drive and gearcase parts</a> — including seal kits, bearing carriers, and clutch components for MerCruiser, OMC, Volvo Penta, Mercury, and other drives — provide the precision fitment that underwater gear systems demand. The brand also carries a broad selection of general RV &amp; marine replacement components suited for maintenance across a wide variety of watercraft.</p><h3>Why Marine Professionals Choose EMP</h3><ul style="list-style:disc"><li><strong>OEM-level fitment:</strong> Parts are designed to match original manufacturer specifications for accurate installation.</li><li><strong>Wide application coverage:</strong> EMP supports Mercury/Mariner, Johnson/Evinrude, MerCruiser, OMC, Volvo Penta, Yamaha, and more.</li><li><strong>Durability in harsh environments:</strong> Components are built to withstand saltwater exposure, vibration, and thermal stress.</li><li><strong>Trusted supply chain:</strong> Over four decades of distribution to OEMs, dealers, and rebuilders worldwide speaks to EMP&apos;s consistency and reliability.</li></ul><p>Whether you&apos;re a professional marine technician stocking a service bay or a boat owner tackling seasonal maintenance, Engineered Marine Products delivers the quality and fitment assurance that keeps engines running season after season.</p>

Part Number

75-00400
09/12/2036 3:54 PM
Sale Price

$29.21

In Stock (10)

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Usually delivered within 2 days

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Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Engineered Marine Products 75-00400 is a precision-engineered marine engine thermostat designed to regulate coolant temperature in inboard and sterndrive marine engines. Maintaining proper engine operating temperature is critical for performance, fuel efficiency, and long engine life — this thermostat ensures your cooling system opens and closes at the correct temperature threshold.

Key Features:

  • Precision temperature control for consistent marine engine performance
  • Designed to meet or exceed OEM specifications for fit and function
  • Constructed from corrosion-resistant materials suited for the harsh marine environment
  • Ensures optimal engine warm-up and prevents overheating
  • Direct replacement for compatible inboard and sterndrive applications

The 75-00400 thermostat from Engineered Marine Products is built to withstand the demanding conditions of saltwater and freshwater boating environments. Replacing a worn or faulty thermostat is a cost-effective way to restore proper engine temperature regulation and protect against costly overheating damage.

Website is intuitive and easy to navigate. Logging in with amazon.com made entering shipping and billing information painless.

so far so good

thanks

web site easy to use

Easy a website and ordering prices are the best I've seen

SHOPPED THE PRICE EVERYWHERE. BEST DEAL ON THE WEB!

Easy to use, will definitely return to the site as parts are needed.

seams good

Good but picture of product did not match up with what i recieved.

Fast and easy.

thanks hope it fits

Overall good transaction had to go through PayPal to make the purchase, wasn't allowing me to use card info.

fast, polite service when we had a question

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