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HARKEN Premium Sailing 40mm Carbo Boat Blocks

  • Based on 65 reviews
Condition: New
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$177.33 Why this price?

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As low as $29.56 / mo
  • – 6-month term
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To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: Only 4 left in stock, order soon!
Fulfilled by The Factory Depot

Arrives Jul 18 – Jul 20
Order within 4 hours and 18 minutes
Available payment plans shown during checkout

Size: 57mm Sheave


Color: No Color


Features

  • Great Product

Description

Great Product

Item Package Dimensions L x W x H: ‎5.83 x 3.86 x 2.4 inches


Package Weight: ‎0.35 Kilograms


Item Dimensions LxWxH: ‎2.24 x 2.24 x 0.1 inches


Brand Name: ‎HARKEN


Warranty Description: ‎Warranty


Model Name: ‎2631


Color: ‎No Color


Material: ‎Plastic


Suggested Users: ‎unisex-adult


Number of Items: ‎1


Manufacturer: ‎Harken


Part Number: ‎2631


Style: ‎Quad Block


Included Components: ‎Great Product


Size: ‎57mm Sheave


Date First Available: August 10, 2012


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 18 – Jul 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Small, high quality Harken block priced well.
Size: 40mm Color: Black
The furling line for my headsail is routed thru one of these, which broke on its 24th anniversary. This block was very fairly priced and exactly the right one.
Reviewed in the United States on May 11, 2025 by Fred Hawes

  • It’s a Harken block
Size: 40mm Carbo Block Color: Black
What else do I need to say? It’s a Harken block which means it’s well-made, sturdy and functions perfectly.
Reviewed in the United States on July 10, 2024 by TangoTango

  • Great Key fob!
Size: 40mm Carbo Block Color: Black
I use this as a key fob. Works great for my truck keys, haven't lost them since I purchased this
Reviewed in the United States on November 17, 2020 by JT

  • Quality product!
Size: 40mm Color: Black
Quality product! Expensive but worth it!
Reviewed in the United States on April 4, 2024 by Randy L.

  • It didn’t come with the shackle that’s shown
Size: 40mm Color: Black
Frustrated. Looking at photo close up it shows the shackle being a Harken 5. So I ordered one. Nope too big must need a 4mm. So I’m still unable to use it. I think this is a bit deceptive. At least in the description it should mention the block doesn’t come with the shackle and would be helpful if it mentioned what size each block needs. ... show more
Reviewed in the United States on November 5, 2022 by Amazon Customer

  • Great
Size: TRIPLE, SWIVEL Color: No Color
Great
Reviewed in the United States on August 10, 2019 by Billy

  • Five Stars
Size: 40mm Color: Black
Good deal, good product.
Reviewed in the United States on December 5, 2016 by R. Mays

  • No Shackle
Size: 40mm Color: Black
Ordered 2 and one did not come with the Shackle. Cost me $15 to buy a shackle.
Reviewed in the United States on March 13, 2023 by Kindle Customer

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