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Engineered Marine Products 46-02078 Water Pump Impeller Kit for Yamaha 40-50 HP Outboards

Manufacturer

Engineered Marine Products

<h3>Engineered Marine Products: Marine-Grade Reliability for Automotive Systems</h3><p>Engineered Marine Products (EMP) brings precision engineering and marine-grade durability to the automotive aftermarket. With over 1,100 specialized components in their catalog, EMP applies the same rigorous standards required for harsh marine environments to create automotive parts that excel in demanding conditions. This manufacturer has built a reputation for producing components that withstand extreme temperatures, moisture, and vibration—qualities that translate directly to superior performance in automotive applications.</p><h3>Climate Control and Electrical Components</h3><p>One of EMP's core specialties lies in climate control system protection. Their <a href="/13199-engineered-marine-products-hvac-cut-off-switch-4209">HVAC cut-off switches</a> provide critical safety functions for heating and air conditioning systems, automatically interrupting power flow when pressure thresholds are exceeded. These switches serve as essential safeguards against compressor damage and system failures, making them indispensable for maintaining optimal cabin comfort and protecting expensive HVAC components from catastrophic failure.</p><h3>Transmission Control Technology</h3><p>Modern automatic transmissions rely on precise hydraulic control to manage gear changes smoothly and efficiently. EMP's <a href="/13199-engineered-marine-products-automatic-transmission-control-solenoid-7752">automatic transmission control solenoids</a> regulate transmission fluid pressure with exceptional accuracy, ensuring seamless shifts and optimal power delivery. These electro-hydraulic components play a vital role in transmission longevity, as proper solenoid function prevents harsh shifting, slippage, and premature wear of internal clutch packs and bands.</p><h3>Engine Cooling Solutions</h3><p>Maintaining proper engine temperature is fundamental to performance and longevity. EMP manufactures <a href="/13199-engineered-marine-products-engine-water-pump-2208">engine water pumps</a> that circulate coolant throughout the engine block, cylinder heads, and radiator system. Drawing on their marine heritage where cooling system reliability is non-negotiable, these water pumps feature durable construction with corrosion-resistant materials and precision-machined components. A failing water pump can lead to overheating and catastrophic engine damage, making quality replacement parts essential for any cooling system service.</p><h3>Engineering Philosophy</h3><p>What sets Engineered Marine Products apart is their commitment to over-engineering components for extreme conditions. Marine applications demand parts that can handle saltwater corrosion, constant vibration, and temperature fluctuations—challenges that also exist in automotive environments. This design philosophy results in parts with enhanced durability, longer service life, and greater reliability than standard replacement components. Whether you're servicing climate control systems, transmission repairs, or cooling system maintenance, EMP provides components engineered to exceed expectations.</p>

Part Number

46-02078
07/13/2036 2:04 PM
Sale Price

$38.88

In Stock (7)

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Usually delivered within 2 days

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Product Details

The Engineered Marine Products 46-02078 water pump impeller kit is designed for Yamaha 40 and 50 HP outboard motors manufactured between 1984 and 1994. This comprehensive rebuild kit provides all the essential components needed to restore proper cooling system function and water circulation in your outboard's lower unit.

Key Features:

  • Direct replacement for Yamaha OEM part number 6H4-W0078-00-00
  • Also replaces Sierra 18-3429 for cross-reference convenience
  • Includes impeller, impeller key, wear plate, gaskets, o-rings, and hardware
  • Does not include pump housing (housing sold separately)
  • Designed for reliable performance in marine environments

Regular water pump maintenance is essential for preventing engine overheating and ensuring long-term reliability of your Yamaha outboard. This kit contains all the wear components that should be replaced during routine service intervals to maintain optimal cooling system performance.

Great prices, simple payment. Would highly recommend this group.Looking forward to future business dealings

So far so good

Shipment arrive in a timely manner. Pricing is a little high and so is shipping in my opinion. I would use your services again.

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Very easy to order.

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