SIERRA 18-99421 Mercrusier Water Cooled Voltage Regulator 808282394523 470

( Brand: Sierra ), ( Part Type: Voltage Regulator ), ( UPC: 808282394523 )

Review SIERRA Mercrusier 470 Water Cooled Voltage Regulator #18-99421

The Sierra 808282394523 MerCruiser 470 water-cooled voltage regulator, part number 18-99421, is a crucial component in the electrical system of MerCruiser marine engines. This high-performance voltage regulator is designed specifically for water-cooled applications to ensure optimal cooling and reliable operation.

The regulator is compact in size, measuring approximately 3.5 inches long, 2.5 inches wide, and 1 inch high. Its sleek design allows for easy integration into various engine compartments. The regulator housing is made of durable, corrosion-resistant materials, ensuring long-lasting performance even in the harsh marine environment.

The 18-99421 voltage regulator features a regulated output voltage of 13.5 volts, making it suitable for charging batteries and powering onboard electronics. It is designed to maintain a consistent output voltage, even under varying engine loads. The regulator's automatic temperature compensation ensures that the voltage remains steady, regardless of cooling water temperature.

The regulator is equipped with a built-in voltage meter, allowing for easy monitoring of the output voltage. The meter displays the voltage level in a clear, easy-to-read format, enabling users to quickly assess the health of their charging system.

The Sierra 808282394523 MerCruiser 470 water-cooled voltage regulator is designed for easy installation. It comes with all necessary mounting hardware and wiring connections, making it a straightforward addition to your MerCruiser engine. The regulator can be mounted in various orientations, providing flexibility in engine installation configurations.

In summary, the Sierra 808282394523 MerCruiser 470 water-cooled voltage regulator, part number 18-99421, is a high-quality, reliable component that maintains consistent voltage levels and ensures optimal charging system performance for your MerCruiser marine engine. Its compact design, durable construction, and built-in voltage meter make it an essential addition to any boat's electrical system.

Pros and Cons of buying a Mercruiser 470 Water Cooled Voltage Regulator (18-99421) for a Sierra Boat

The Mercruiser 470 Water Cooled Voltage Regulator (18-99421) is a crucial component for maintaining the electrical system in a Sierra boat. This regulator ensures the correct charging voltage for the battery, preventing overcharging or undercharging. Let's examine the potential advantages and disadvantages of purchasing this part.

1. Reliable: Mercruiser is a reputable brand known for producing high-quality marine components. This voltage regulator is no exception, ensuring reliable performance and longevity.

2. Water-cooled: Water-cooled components run cooler than air-cooled alternatives, reducing the risk of overheating and potential damage to the regulator.

3. Easy installation: The 470 Water Cooled Voltage Regulator (18-99421) is designed to be a direct replacement for older Mercruiser regulators, ensuring a straightforward installation process.

4. Compatibility: This regulator is compatible with a wide range of Sierra boats and Mercruiser engines.

5. Enhanced battery life: Properly maintaining the charging voltage ensures the battery is not subjected to excessive wear, extending its overall lifespan.

1. Cost: The Mercruiser 470 Water Cooled Voltage Regulator (18-99421) may be more expensive than some alternative options from less well-known brands.

2. Availability: Due to its popularity and high demand, this part may be harder to find in local shops, requiring an online purchase.

3. Complexity: While the installation process is straightforward, removing the old regulator and replacing it with the new one may require some technical knowledge.

The Mercruiser 470 Water Cooled Voltage Regulator (18-99421) is an excellent investment for Sierra boat owners looking for a reliable and efficient charging solution. Its water-cooled design, easy installation, and compatibility with a wide range of boats make it a worthwhile purchase. However, its cost and potential availability concerns should be considered before making a final decision.

If you are in the market for a new voltage regulator for your Sierra boat and are looking for a reliable, efficient, and compatible option, the Mercruiser 470 Water Cooled Voltage Regulator (18-99421) is an excellent choice. While its cost and availability may be a concern, the long-term benefits of a high-quality regulator far outweigh these potential drawbacks.

Details:

Replaces Mercury 86255A3, 77305A2, 86255A2,99502A4, 99502A7, 99502A8, 99502A9, 99502A12, 99502A13. Replaces CDI 194-9502-4, 194-9502. For Mercrusier 3.7L 470 marine engines using a water-cooled regulator/rectifier. Sierra 18-99421 Charging System Parts: Mercrusier model 470 direct replacement water-cooled voltage regulator provides steady, constant from marine alternators.

part #: 808282394523 prices

• $519.99-$616.55

specifications rightrectifier:

• brand: Sierra
• part type: Voltage Regulator
• upc: 808282394523

returns rightrectifier:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

seller rightrectifier:

• rating: 98.8%
• # reviews: 29125
• city: Grain Valley, Missouri

payments rightrectifier:

• other
• wallet: Paypal
• credit card: Discover

shipping rightrectifier:

• class: Standard, Expedited
• carrier: USPS, UPS
• type: Calculated
• transit: 5-12 Days
• service: USPS Ground Advantage, USPS Priority Mail, UPS Ground
• cost: $13.10

offer rightrectifier:

• options: Ship-to-home
• started: June 30, 2025
• availability: In Stock
• quantity: 4
• sold: 0

general rightrectifier:

• Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Voltage Regulators Rectifiers
• condition: New

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