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Engineered Marine Products 47-47271 Water Pump Impeller 6-Blade for Mercury Mariner Outboards

Manufacturer

Engineered Marine Products

<h3>About Engineered Marine Products (EMP)</h3><p><strong>Engineered Marine Products</strong>, widely known in the boating world as <strong>EMP</strong>, has been a trusted name in marine parts manufacturing for over 40 years. The company supplies OEMs, distributors, dealers, and rebuilders worldwide with high-quality aftermarket components engineered to meet or exceed original equipment manufacturer (OEM) specifications. Whether you maintain a weekend fishing boat or a performance inboard, EMP&apos;s extensive catalog is built to keep marine engines running reliably season after season.</p><h3>A Marine Parts Specialist Built on Engineering Precision</h3><p>EMP&apos;s foundation is precision manufacturing. Their design and production processes leverage modern engineering technology, with a focus on dimensional accuracy, material quality, and long-term durability in the demanding marine environment. Salt spray, constant vibration, wide temperature swings, and moisture ingress are realities every marine component must survive — and EMP engineers its parts with exactly those conditions in mind.</p><p>The brand&apos;s catalog spans a remarkably wide range of marine engine subsystems. From cooling and fuel delivery to gearcases, propellers, transom components, and steering systems, EMP offers solutions for outboard engines from manufacturers including Mercury/Mariner, Yamaha, BRP (Johnson/Evinrude), and Force, as well as inboard/sterndrive platforms such as MerCruiser, OMC, and Volvo Penta.</p><h3>Ignition and Electrical Components</h3><p>One of EMP&apos;s most comprehensive product areas is marine ignition and electrical systems. Their <a href="/13199-engineered-marine-products-ignition-control-module-10488">Ignition Control Modules</a> and related ignition components cover a broad spectrum of inboard and outboard applications — from distributor caps and rotors for Volvo Penta V8 engines to ignition coil assemblies compatible with MerCruiser 3.0L through 8.4L GM-based powerplants and OMC configurations. Reliable spark delivery is critical to engine performance and starting consistency on the water, and EMP&apos;s ignition lineup is designed to deliver dependable output across the entire RPM range.</p><h3>Gaskets, Seals, and Engine Integrity</h3><p>Keeping a marine engine leak-free is just as important as keeping it firing correctly. EMP&apos;s <a href="/13199-engineered-marine-products-gaskets-seals-201268">Gaskets &amp; Seals</a> lineup addresses the full range of engine and gearcase sealing needs — including gearcase seal kits, Teflon lip seals, fuel injector crush ring kits, and comprehensive engine gasket sets. Proper sealing prevents water intrusion, oil loss, and exhaust leaks that can quickly sideline a boat and lead to expensive engine damage.</p><h3>Why Boaters and Technicians Choose EMP</h3><ul style="list-style:disc"><li><strong>OEM-Grade Quality:</strong> Parts are engineered to meet or exceed original manufacturer specifications, ensuring proper fit and reliable function.</li><li><strong>Broad Application Coverage:</strong> EMP covers major outboard and inboard/sterndrive platforms from leading marine engine brands.</li><li><strong>Trusted Supply Chain:</strong> EMP products are sold through OEMs, distributors, and dealers globally, reflecting deep industry confidence in the brand.</li><li><strong>40+ Years of Manufacturing Heritage:</strong> Decades of marine-specific engineering experience inform every product in the EMP lineup.</li></ul><p>For boat owners, marine technicians, and engine rebuilders who demand components they can count on, Engineered Marine Products delivers the quality and application coverage to get the job done right.</p>

Part Number

47-47271
09/12/2036 6:51 AM
Sale Price

$15.79

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Product Details

The Engineered Marine Products (EMP) 47-47271 is a replacement water pump impeller designed for Mercury and Mariner 2-cylinder outboard engines. Built to meet or exceed OEM specifications, this impeller ensures reliable coolant circulation to keep your outboard engine operating at the correct temperature.

Key Specifications:

  • Number of Blades: 6
  • Inner Diameter (ID): 16 mm
  • Outer Diameter (OD): 38.5 mm
  • Width: 21.8 mm
  • Hub Type: Keyed (hub uses key)

Key Features:

  • Manufactured to demanding industry standards for a well-balanced, precision fit
  • Constructed from durable rubber compound for long service life, even with frequent use
  • Keyed hub design ensures secure, positive engagement with the pump shaft
  • Direct OEM-style replacement for straightforward installation
  • Engineered to perform reliably in both freshwater and saltwater environments

Brand Background: For over 40 years, EMP has been serving the OEM and marine aftermarket by providing superior quality, reliable marine products. EMP products are engineered to meet or exceed original equipment manufacturer specifications.

Regular impeller replacement is a critical part of outboard engine maintenance. Impeller blades can degrade over time — especially in saltwater — and prolonged storage without use can cause blades to set or stick, reducing pump efficiency and risking engine overheating. Replacing the impeller on schedule protects your engine and cooling system investment.

I need to return/ exchange my item because it doesn't fit my wheels.

Exactly what I needed and fast service.

Service was very good as well as the product

Easy to find parts with the manufacture part number. Easy check out.

no

Just what I ordered and arrived on time ,I installed and turned outgreat,thanks

Fantastic site and prices

Good price and easy check out

Looks to be a great price

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