SKU: 13234273473

Harken 57mm Aluminum Low Load Black Magic Block w/Swivel [3226]

Sale price$95.37 Regular price$105.97
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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Description

Harken 57mm Aluminum Low Load Black Magic Block w/Swivel [3226]57mm Aluminum Low Load Black Magic Block with Swivel Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep the line from

57mm Aluminum Low Load Black Magic Block with Swivel

Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep the line from twisting. Low-load blocks have red isolators. They use Torlon® rollers and 316 stainless steel shackles. Standard blocks have 17-4 PH stainless head posts. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C. 

Specifications:

  • Sheave: 57mm/2-1/4in
  • Length: 119mm/4-11/16in
  • Weight: 154g/5.44oz
  • Shackle Pin: 6mm/1/4in
  • Maximum Line: 12mm / 7/16in
  • Maximum Working Load: 7/16kg / 1655lbs
  • Breaking Load: 1500kg / 3300lb
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 13234273473

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4.3 ★★★★★
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LONDON
Cuba, US
★★★★★ 1
MONKEYBUSINESS BOOK
Format: Paperback
Get a clue. You shop out your sources like a monkey in a candy store.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2017
Q
Verified Purchase
Quinton Riley
Lowell, US
★★★★★ 5
Affordable
Style: High Mileage 150K, Size: 5 qt (Pack of 1), Configuration: 5W-20
Good oil
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Reviewed in the United States on May 24, 2026
G
Verified Purchase
GAU
Boise, US
★★★★★ 5
Great choice for your older Vehicle.
Style: High Mileage 150K, Size: 5 qt (Pack of 1), Configuration: 5W-30
Trusted and put to use many times with my 2006 Pontiac G6. I have over 140,000 miles on her and she is still reliable and running great. I love the fact that it also helps clean away the built up grime etc. in the Engine
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Reviewed in the United States on March 25, 2026
R
Verified Purchase
Richard J Enright Jr
Waukegan, US
★★★★★ 5
Works
Style: High Mileage 150K, Size: 5 qt (Pack of 1), Configuration: 10W-30
The seal conditioners seem to be working as I’m seeing less oil dripping onto the ground now under my jeep
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Reviewed in the United States on April 3, 2026
G
Verified Purchase
Goober
Carnegie, US
★★★★★ 5
Good
Style: High Mileage 150K, Size: 5 qt (Pack of 1), Configuration: 5W-30
Good oil. Stopped leak
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Reviewed in the United States on April 1, 2026

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