Sierra Engine Parts

Sierra 18-2587 Power Steering Cooler 99356A 2

SKU: 4002495 · UPC: 808282243630 · MPN: 18-2587
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02 · Overview

Sierra 18-2587 Power Steering Cooler 99356A 2 — Product description

Keep Your Boat's Steering Smooth and Reliable

Overheating power steering fluid can turn a peaceful day on the water into a nightmare of stiff steering and potential breakdowns. This rugged power steering cooler steps in as your boat's best defense, efficiently dissipating heat to maintain optimal fluid performance even during long hauls or high-demand maneuvers. Designed for marine environments, it handles the rigors of saltwater exposure and constant vibration without flinching.

Key Advantages for Boaters

  • Superior Heat Dissipation: Transfers excess heat away from the fluid quickly, preventing viscosity breakdown and pump wear.
  • Corrosion-Resistant Build: Crafted with materials that stand up to harsh marine conditions, ensuring longevity where cheap alternatives fail.
  • Compact and Efficient Design: Fits seamlessly into tight engine compartments without sacrificing cooling capacity.
  • Peace of Mind: Reduces the risk of steering failures, keeping you in control whether trolling for fish or pushing through choppy waves.

Engineered for Peak Performance

In the demanding world of boating, every component must pull its weight. This cooler integrates advanced tube-and-fin technology that maximizes surface area for rapid cooling. It supports consistent hydraulic pressure, which translates to responsive steering that feels effortless, lap after lap.

Real-World Benefits

  • Extends the life of your power steering pump by minimizing thermal stress.
  • Improves overall system efficiency, reducing energy loss from hot fluid.
  • Ideal for high-horsepower setups or boats operating in warm climates where fluid temps spike fast.
  • Easy monitoring—pair it with routine fluid checks for proactive maintenance.

Boat owners report fewer instances of fluid foaming or cavitation after installation, proving its value in keeping steering systems primed for action.

Simple Swap for Lasting Results

Upgrading your power steering system doesn't require a marine mechanic's expertise. With basic tools like hose clamps and wrenches, most installations wrap up in under an hour. Start by draining the old fluid, disconnect the existing lines, mount the new unit in a well-ventilated spot near the pump, and reconnect. Flush the system thoroughly to remove contaminants, then top off with fresh, high-quality fluid.

Pro Maintenance Tips

  • Inspect hoses quarterly for cracks or leaks—replace proactively.
  • Monitor fluid levels after every 20 hours of use; low levels accelerate wear.
  • In saltwater environments, rinse the cooler exterior with fresh water post-use to prevent salt buildup.
  • Watch for symptoms like whining pumps or jerky steering—these signal it's time for a refresh.

Regular care like this keeps your investment performing like new, avoiding costly repairs down the line.

Spot and Solve Steering Issues Early

Steering woes often stem from overlooked heat buildup. Common red flags include sluggish response, unusual noises from the pump, or fluid that darkens prematurely. A dedicated cooler addresses these by stabilizing temperatures, but if problems persist, check for air pockets in the lines or worn seals. Proactive replacement prevents escalation, saving you from trailering woes.

Frequently Asked Questions

What does a power steering cooler do for my boat?

It removes excess heat from the power steering fluid, preventing overheating that leads to poor steering performance, pump damage, and system failure during extended use.

Why is a power steering cooler essential in marine applications?

Marine engines generate intense heat, and saltwater accelerates fluid degradation. A cooler maintains fluid integrity, ensuring reliable steering in demanding conditions.

How do I know if my power steering cooler needs replacing?

Look for signs like steering stiffness, fluid leaks, pump noise, or discolored fluid. These indicate heat-related issues that a new cooler resolves.

Can I install a power steering cooler myself?

Yes, with basic tools and mechanical know-how. Drain fluid, swap lines, secure mounting, and refill—most jobs take less than an hour.

Does this cooler improve steering feel on the water?

Absolutely. Cooler fluid stays viscous, providing smoother, more precise control, especially at high speeds or under load.

How often should I maintain my power steering cooler?

Check hoses and fluid every boating season. Rinse after saltwater exposure and inspect for corrosion annually.

Will a power steering cooler extend my steering system's life?

Yes, by reducing thermal stress on pumps and components, it can double service intervals compared to non-cooled systems.

Power Steering Cooler 99356A 2


SKU: NVN-4002495
MPN: 18-2587
UPC: 808282243630
03 · The numbers

Technical specifications

BrandSierra Engine Parts
ModelSierra 18-2587 Power Steering Cooler 99356A 2
SKU / MFR#4002495

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05 · Customer voices

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