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Engineered Marine Products 91-91004 Bellows Sleeve Installation Tool for MerCruiser Sterndrives

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

91-91004
09/14/2036 11:14 AM
Sale Price

$26.66

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Fitment guaranteed

Fitment guaranteed

Product Details

The Engineered Marine Products (EMP) 91-91004 is a specialized bellows sleeve installation tool engineered for marine sterndrive service. This purpose-built tool simplifies the process of seating the aluminum retainer ring into U-joint bellows during transom and sterndrive maintenance.

Key Features:

  • Designed to install the aluminum retainer sleeve into U-joint bellows assemblies on MerCruiser Alpha One Gen II, Bravo, and Blackhawk sterndrive units
  • Prevents damage to the retainer ring and bellows during installation
  • Eliminates the need for improvised methods, reducing installation time and risk of errors
  • Engineered to meet OEM specifications for precise, reliable fitment
  • Recommended for use alongside a compatible engine alignment or driver rod tool

From Engineered Marine Products, a trusted name in the marine aftermarket industry for over 40 years, this tool is an essential addition to any marine mechanic's or serious boat owner's sterndrive service toolkit. Cross-references: Mercury/MerCruiser 91-818162, Sierra 18-9870.

great price and service

First time dealing with you, so far so good.

na

ok.....should have been a new customer discount!

Order and delivery were timely

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