HARKEN H348 Air Block Dyneema Shackle

( Brand: Harken ), ( Manufacturer Part Number: H348 ), ( Part Type: Block Shackle )

Review HARKEN Carbo Air Block Dyneema Soft Shackle fits 2029

Introducing the Harken H348 29 Air Block Dyneema Shackle, a high-performance sailing accessory designed for optimal strength and durability. This shackle is an essential component for your sailing rig, engineered to securely connect your lines and cables, especially those made of Dyneema or other high-performance fibers.

The H348 shackle is part of Harken's Air Block line, which is renowned for its innovative design and functionality. The Air Block system eliminates the need for a traditional turnbuckle, instead using air pressure to adjust the length of your line. This results in a sleeker, more streamlined setup, reducing drag and improving overall sailing efficiency.

The H348 shackle is specifically designed for use with Dyneema and other high-modulus fibers, which require a stronger, more durable shackle. The shackle is constructed from 29mm (1.14 inches) diameter aluminum alloy, providing exceptional strength and rigidity. The shackle's D-shaped design ensures a secure connection, while the Dyneema-compatible cleats offer a reliable attachment point for your lines.

The H348 shackle is also outfitted with Harken's patented Air Block technology, which utilizes air pressure to adjust the length of your lines. This innovative system eliminates the need for traditional turnbuckles, offering a more streamlined and efficient rig. Additionally, the Air Block system is self-aligning, ensuring that your lines remain properly aligned and tensioned, even in the most challenging sailing conditions.

This shackle is also designed with ease of use in mind. The Air Block system allows for quick and easy adjustments, making it an ideal choice for race crews or any sailor who demands the utmost in performance and versatility. The shackle is also easy to install, requiring no specialized tools or extensive setup time.

In summary, the Harken H348 29 Air Block Dyneema Shackle is a high-performance sailing accessory that offers exceptional strength, durability, and ease of use. Its innovative Air Block system eliminates the need for traditional turnbuckles, providing a more streamlined and efficient rig, while its compatibility with high-modulus fibers makes it an essential component for any serious sailor.

The Harken H348 29 Air Block Dyneema Shackle is a popular choice for sailors looking for a high-performance, lightweight, and durable block and shackle system. Here are some pros and cons to help you make an informed decision:

1. Lightweight: The Harken H348 29 Air Block Dyneema Shackle is made of Dyneema fibers, which are known for their strength and lightweight property. This makes it an excellent choice for reducing the overall weight of your sailing equipment.

2. Durability: The shackle is made of Dyneema fibers, which are highly resistant to fatigue and abrasion. This makes it an excellent choice for heavy-duty sailing applications where traditional metal shackles may fail.

3. Efficiency: The Air Block system reduces friction and allows for easier sail handling, which can help improve your sailing performance.

4. Versatility: The Harken H348 29 Air Block Dyneema Shackle is suitable for a wide range of sailing applications, including mainsheets, jib sheets, and spinnaker sheets.

1. Cost: The Harken H348 29 Air Block Dyneema Shackle is more expensive than traditional metal shackles. This may be a deterrent for some sailors with a budget constraint.

2. Limited Capacity: The Harken H348 29 Air Block Dyneema Shackle has a lower capacity than traditional metal shackles. This may not be suitable for very large or heavy sails.

3. Maintenance: While the Harken H348 29 Air Block Dyneema Shackle is highly resistant to abrasion and fatigue, it still requires regular maintenance to ensure its longevity. This includes checking for any signs of wear and replacing the shackle if necessary.

The Harken H348 29 Air Block Dyneema Shackle is an excellent choice for sailors who are looking for a lightweight, durable, and efficient block and shackle system. While it may be more expensive than traditional metal shackles, the benefits it offers in terms of performance and longevity may outweigh the cost. However, it may not be suitable for very large or heavy sails due to its limited capacity.

If you are looking for a high-performance, lightweight, and durable block and shackle system for your sailing equipment, the Harken H348 29 Air Block Dyneema Shackle is an excellent choice. However, it is essential to consider the cost and the limitations of its capacity before making a purchase. If you have a large or heavy sail, you may want to consider a traditional metal shackle instead. Overall, the Harken H348 29 Air Block Dyneema Shackle is a worthwhile investment for sailors who prioritize performance and longevity.

Details:

Sheave: 29mm / 1/8 in. Maximum line: 8mm / 5/16 in. length : 49mm / 1 15/16 in. From Harken Low-friction Carbo Air blocks are lightweight, strong, reliable and affordable.

Harken 29mm Carbo Air Block H348 w/ Dyneema Soft Shackle. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Excellent condition used part.

part #: h348 prices

• $18.04-$82.00

specifications sailgrinch:

• for years: 2029
• brand: Harken
• mpn: H348
• part type: Block Shackle

general sailgrinch:

• condition: Used
• Boat Parts > Sailing Hardware Gear > Other Sailing Hardware Gear

offer sailgrinch:

• sold: 0
• options: Ship-to-home
• started: January 17, 2026
• best offers: True
• availability: In Stock
• quantity: 1

payments sailgrinch:

• wallet: Apple-pay
• other
• credit card: Diners-club

shipping sailgrinch:

• transit: 6-12 Days
• service: Economy, Standard
• class: Economy, Standard
• type: Fixed
• cost: $5.00

returns sailgrinch:

• policy: No Returns

seller sailgrinch:

• # reviews: 712
• rating: 100.0%
• city: Madison, Alabama

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