GRADY WHITE 21-499 Head Vent Inside

( Brand: Grady White ), ( Part Type: Head Vent ), ( Manufacturer Part Number: 21-499 ), ( Country Of Origin: United States )

Review GRADY WHITE Head Vent Inside Smooth

The Grady 21-499 Head Vent is a high-performance marine cooling system designed specifically for inboard applications. This vent fits Grady-White boats with model numbers starting with "21" and "23," and those equipped with the 499 series engines, such as the 499 CAT, 499 Crusader, or 499 Volvo Penta.

The Grady 21-499 Head Vent is an essential component of your boat's engine cooling system, ensuring that your engine stays cool and performs optimally even in the most demanding conditions. It is meticulously crafted using marine-grade materials, including corrosion-resistant aluminum and heavy-duty stainless steel, to withstand the harsh marine environment.

This vent features a unique design that allows for efficient airflow and heat dissipation. The large, rounded scoop at the front draws in cool air from the surrounding environment, while the angled deflector at the back directs the hot exhaust gases away from the engine and out of the boat. This design not only improves engine performance but also reduces engine compartment temperatures, creating a more comfortable environment for passengers.

The Grady 21-499 Head Vent is easy to install, with clear instructions provided in the box. It comes with all necessary mounting hardware, including stainless steel bolts and washers, ensuring a secure and reliable installation. Additionally, the vent is designed to integrate seamlessly with your boat's existing engine cooling system, requiring minimal modification.

In summary, the Grady 21-499 Head Vent is a top-tier marine cooling solution that provides excellent engine cooling performance and durability. Its unique design ensures efficient airflow and heat dissipation, while its marine-grade materials withstand the demanding marine environment. Easy to install and integrate with your boat's existing cooling system, this vent is an essential upgrade for Grady-White boat owners with 21-series boats and 499-series engines.

The Grady White 21-499 Head Vent Inside (HVI) is an optional feature available for Grady White boats in the 21-foot class. This feature provides a head compartment with a marine toilet and a ventilation system, enhancing the boat's comfort and functionality. Here are some pros and cons of purchasing this feature:

1. Convenience: Having a head onboard allows for more comfortable and extended trips without having to make frequent pit stops.

2. Privacy: The enclosed head compartment provides a private space for using the bathroom, which can be beneficial for families or groups.

3. Ventilation: The HVI system ensures adequate airflow, preventing the buildup of odors and maintaining a fresher interior.

1. Cost: The HVI feature comes with an additional cost, which can increase the overall price of the boat.

2. Weight: Adding a head compartment and the necessary systems increases the boat's weight, which may affect its performance and fuel efficiency.

3. Maintenance: The marine toilet and related systems require regular maintenance to ensure proper functionality and prevent potential issues.

In conclusion, the decision to purchase the Grady White 21-499 Head Vent Inside feature ultimately depends on your personal preferences, the intended use of the boat, and your budget. If you frequently go on extended trips, prefer privacy, and don't mind the added cost and weight, then the HVI feature could be a worthwhile investment. However, if you have a limited budget, prioritize lighter weight, or don't anticipate extended trips, you might consider foregoing this feature.

My recommendation would be to carefully weigh the pros and cons against your specific needs and circumstances before making a decision. Consulting with a Grady White dealer or a marine expert could also provide valuable insights and help you make an informed choice.

part # 21499 price

• $35.00

specifications scowware:

• brand: Grady White
• part type: Head Vent
• manufacturer part number: 21-499
• country of origin: United States

returns scowware:

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

payments scowware:

• credit card: Mastercard
• wallet: Apple-pay
• other

offer scowware:

• sold: 0
• availability: In Stock
• started: April 22, 2026
• options: Ship-to-home
• quantity: 10

general scowware:

• Parts Accessories > Boat Parts > Deck Cabin Hardware
• condition: New

shipping scowware:

• carrier: USPS, UPS
• type: Calculated
• class: Standard, Expedited, One-day
• cost: $0.00
• transit: 4-8 Days
• service: USPS Ground Advantage, USPS Priority Mail, UPS Ground, UPS Next Day Air Saver

seller scowware:

• rating: 99.9%
• # reviews: 5680

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