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Engineered Marine Products 1300-36039 Marine Knock Sensor

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

1300-36039
09/12/2036 2:40 PM
Sale Price

$89.30

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Product Details

The Engineered Marine Products 1300-36039 is a replacement knock sensor designed for GM small block marine engines. The knock sensor monitors the engine block for abnormal vibrations caused by detonation and pre-ignition, signaling the engine control module (ECM) to retard ignition timing before damage can occur — protecting your powerplant from harmful knock events during operation.

This sensor is a direct-fit aftermarket replacement that cross-references to Mercury Marine 806612T, Volvo Penta 22024631, Mallory Marine 9-33503, and Sierra Marine 18-7677, making it a widely compatible option for popular MerCruiser inboard and sterndrive applications.

Key Features:

  • Monitors engine block vibration to detect detonation and pre-ignition
  • Signals ECM to correct ignition timing and prevent engine damage
  • Direct replacement for Mercury Marine OEM part 806612T
  • Compatible with 5.0L, 5.7L, and 6.2L MX GM-based marine engines
  • Cross-references: Mercury Marine 806612T, Volvo Penta 22024631, Mallory Marine 9-33503, Sierra 18-7677

Compatible Engine Applications:

  • MerCruiser 200, 230, 260
  • MerCruiser 350 Scorpion, 350 MAG
  • MerCruiser 5.0L, 5.7L, 5.7L LX
  • MerCruiser 6.2L MX
  • MCM/MIE GM V-8 (305, 350 & 377 CID) engines

Manufactured by Engineered Marine Products (EMP), a trusted name in aftermarket marine engine components. UPC: 77942341275.

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