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Quicksilver 99520 Heat Exchanger Molded Coolant Hose

Manufacturer

Quicksilver

<h3>Quicksilver: The Marine Enthusiast&apos;s Trusted OEM Brand</h3><p>For boaters who refuse to compromise on quality, <strong>Quicksilver</strong> has been the benchmark for marine parts, accessories, and engine care products since 1950. Based in Fond du Lac, Wisconsin, Quicksilver operates as the parts and accessories brand of Mercury Marine — and that heritage is central to everything it makes. As the only marine aftermarket brand manufactured and recommended by an original-equipment manufacturer, Quicksilver brings factory-level engineering directly to boat owners, professional technicians, and weekend warriors alike.</p><p>What sets Quicksilver apart from generic aftermarket suppliers is its direct lineage to the engineers who designed the engines in the first place. Every component is engineered, tested, and manufactured with the same exacting standards as the original equipment it replaces. The result is a product line that fits right the first time and delivers the reliability boaters depend on — whether they&apos;re navigating calm inland lakes or pushing through demanding saltwater conditions.</p><p>Quicksilver&apos;s catalog spans more than 40,000 parts across 12 product lines, covering outboard and sterndrive engines from Mercury, Mariner, Yamaha, Honda, Evinrude, Johnson, Suzuki, and more. Among the most critical components in that lineup are Quicksilver Fuel Pumps, which are built to deliver factory fit and consistent fuel delivery across a wide range of outboard applications. Reliable fuel delivery is the foundation of engine performance, and Quicksilver&apos;s fuel system components are engineered to handle the demanding conditions of marine use — including compatibility with current fuel formulations.</p><p>Beyond fuel systems, Quicksilver is a go-to source for Propeller Parts &amp; Accessories that help boaters maintain and optimize their propulsion systems. From hub kits that protect both prop and gearcase to installation hardware and prop tools, these components are designed to the same tolerances as the drives they support. Proper propeller maintenance is one of the most impactful things a boat owner can do for performance, efficiency, and engine longevity — and Quicksilver makes that job straightforward.</p><p>The brand&apos;s commitment extends across lubricants, impellers, thermostats, anodes, fuel filters, oil filters, maintenance kits, and complete service packages — all engineered for the marine environment and tested to meet or exceed the standards of major engine manufacturers. Whether you&apos;re performing routine seasonal maintenance or tackling a more involved repair, Quicksilver provides the parts that restore your engine to peak operating condition.</p><ul style="list-style:disc"><li>OEM-backed engineering from Mercury Marine</li><li>Compatible with Mercury, Yamaha, Honda, Evinrude, Johnson, Suzuki, and Mariner engines</li><li>Over 40,000 parts spanning 12 product lines</li><li>Formulated and tested for freshwater and saltwater environments</li><li>Trusted by DIY boaters and professional marine technicians since 1950</li></ul><p>When reliability on the water is non-negotiable, Quicksilver delivers the peace of mind that only a true OEM-backed brand can provide.</p>

Part Number

99520
09/12/2036 10:33 AM
Sale Price

$20.41

2 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Quicksilver 99520 is an OEM molded coolant hose designed specifically for MerCruiser stern drive cooling systems. This genuine Mercury Marine replacement hose connects the heat exchanger to the regulator, providing a critical pathway for coolant flow in the closed-cooling circuit.

Key Features:

  • OEM Mercury Marine part number 32-99520 (also referenced as 99520)
  • Molded rubber construction for precise fit and durability
  • 3/4-inch tube outer diameter on both ends
  • Pre-formed shape eliminates kinking and ensures proper routing
  • Direct replacement for original equipment

This heat exchanger hose is engineered to fit MerCruiser 3.7L engines (1983-1989) and GM Big Block 454 V8 engines (1998-newer). The molded design ensures optimal coolant flow while withstanding the temperature extremes and constant vibration typical of marine environments. Genuine Quicksilver parts are manufactured to Mercury Marine's exacting specifications for reliable performance and long service life.

Fast easy

Easy ordering. Item exactly what we were looking for.

SO EASY

Great price and quick delivery.

good service and quick response

This is the only place I found that didn&#039;t ask if I wanted to talk to someone. Plus check out was easier then the rest.

Pretty smooth ordering and shipping process. Thanks.

I was very satisfied with the item we purchased and delivery time. The only thing I wish we could of done was add another item to our shipment before it was shipped. We I called customer service but was told that could not be done.

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