U.S. Customers: Orders shipped from Canada may be subject to U.S. import duties, taxes, and/or tariffs as assessed by U.S. Customs and your carrier. These charges are not included in our product prices or shipping rates. You are responsible for any duties/tariffs/fees due on delivery or prior to delivery.
Canadian Based. Customer Focused.

Premium Marine Quality Parts

Harken
2638

Harken 40mm Carbo Air Double Swivel Block

LSN 79734 MPN 2638 UPC 097653077312 MFR Harken
Special Order
BC, Warehouse

"Special Order" items will take longer to process and ship then "Express" items.
Typically takes no more then 14 days for delivery.

For next day parts. Visit our express parts catalog Here.
In Stock
$120.86
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$16.54
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40mm Carbo Air Double Swivel Block

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Specifications:

  • Sheave Ø (mm)40 mm
  • Sheave Ø (in)1 9/16 in
  • Maximum line Ø (mm)10 mm
  • Maximum line Ø (in)3/8 in
  • Maximum working load (kg)440 kg
  • Maximum working load (lb)970 lb

Documentation

Quick GuideDownload PDF
Installation GuideDownload PDF
Northern Marine Canada
Proudly Canadian Owned & Operated!
Serving customers across Canada & the USA with marine parts and accessories.
Canadian Head Office:
Kingston, Ontario, Canada
Warehouse Locations:
Toronto, Ontario, Canada
New Jersey, USA
Florida, USA

About Us

Northern Marine is a Canadian supplier of premium marine and RV parts and accessories from top industry brands. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.