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HARKEN 57mm & 75mm Cruising ESP Blocks

Designed to handle the high loads generated by modern racing and cruising boats, ESP blocks feature axle bearings to ensure smooth, hitch-free performance under high load and heavy winds.

  • Sheave: Long-glass engineered plastic, except lockoff: aluminum
  • Bearings: Contained-axle sleeve and carbon-black Torlon ball bearings
  • Sheave Size: 3" (76mm)
  • Line Diameter: 3/4"
  • Cheek Material/Finish: Aluminum
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
ESP Mastbase Teardrop Block, 57mm Sheave Size, 5/8" Line Dia., Aluminum, 4,190lb. SWL, 4.7oz. 2641066 6050
In stock online.

$59.99

ESP Block, Single/Swivel, 75mm Sheave Size, 3/4" Line Dia., Aluminum, 3,500lb. SWL, 12oz. 5320312 6058
In stock online.

$99.99

ESP Block, Single/Swivel, 57mm Sheave Size, 5/8" Line Dia., Aluminum, 2,500lb. SWL, 11oz. 5320320 6059
In stock online.

$87.99

ESP Block, Single/Swivel, 57mm Sheave Size, 5/8" Line Dia., Stainless, 2,500lb. SWL, 11oz. 2641298 6068
In stock online.

$177.99

ESP Block, Single Foot/Lockoff, 57mm Sheave Size, 5/8" Line Dia., Aluminum, 2,500lb. SWL, 8oz. 5366943 6077
Delivery within 2 - 3 weeks.

$129.99

ESP Block, Single Foot/Lockoff, 75mm Sheave Size, 3/4" Line Dia., Aluminum, 3,500lb. SWL, 12oz. 5366950 6078
In stock online.

$162.99

ESP Block, Single/Swivel/Becket, 75mm Sheave Size, 3/4" Line Dia., Aluminum, 3,500lb. SWL, 13oz. 5443478 6084
In stock online.

$129.99

ESP Block, Fiddle, 75mm/46mm Sheave Size, 3,500lb. SWL, 14.7oz. 6580435 6085
In stock online.

$177.99

ESP Block, Fiddle with Becket, 75mm/46mm Sheave Size, 3,500lb. SWL, 15.6oz. 6580997 6086
In stock online.

$224.99

ESP Block, Footblock, 57mm Sheave Size, 5/8" Line Dia., Aluminum, 2,500lb. SWL, 5.4oz. 5366976 6091
In stock online.

$92.99

ESP Block, Footblock, 75mm Sheave Size, 3/4" Line Dia., Aluminum, 3,500lb. SWL, 10.3oz. 5366984 6092
In stock online.

$119.99

ESP Block, Single/Swivel/Becket, 57mm Sheave Size, 5/8" Line Dia., Aluminum, 2,500lb. SWL, 9oz. 5366992 6094
In stock online.

$109.99

ESP Block, Fiddle with Becket,Cam, 75mm/46mm Sheave Size, 2,000lb. SWL, 25.2oz. 10729614 6099
Delivery within 2 - 3 weeks.

$349.99

ESP Block, Teardrop Bootblock, 57mm Sheave Size, 1/2" Line Dia., Aluminum,1,250lb. SWL, 1.8oz. 11872157 6105
Delivery within 2 - 3 weeks.

$89.99

ESP Block, Forkhead, 40mm Sheave Size, 5/8" Line Dia., Aluminum, 1,650lb. SWL, 4.5 oz. 11872165 6106
Delivery within 2 - 3 weeks.

$62.99

Product Description

Designed to handle the high loads generated by modern racing and cruising boats, ESP blocks feature axle bearings to ensure smooth, hitch-free performance under high load and heavy winds.

  • Sheave: Long-glass engineered plastic, except lockoff: aluminum
  • Bearings: Contained-axle sleeve and carbon-black Torlon ball bearings
  • Sheave Size: 3" (76mm)
  • Line Diameter: 3/4"
  • Cheek Material/Finish: Aluminum

Specs

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