38mm Big Bullet Replacement Sheave
Mouse Over to Zoom
Click to Enlarge

HARKEN38mm Big Bullet Replacement Sheave


In stock online.
Model # 263033 | Mfg # 265UPC # 97653009924


38mm Big Bullet Replacement Sheave

Name Value
Mount Type Complementary Hardware
Safe Working Load 300 Pounds
Sheave Diameter 39 mm
Type Spare Sheave
Weight 0.5 Ounce

Product Overview

Harken 38mm Big Bullet Replacement Sheave with Delrin® ball bearings to keep sailing blocks working properly. 

Self-contained sheaves are designed to use in custom applications. The Micro, Bullet, and Big Bullet sheaves are Delrin with Delrin® ball bearings. They are scored for rope.

Big Bullet blocks can be used as main or jib sheet blocks on dinghies, or for control line applications, such as travelers, cunninghams or boom vangs on offshore boats. Low-friction Big Bullet Blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. Delrin sheave and ball bearings. Cheek material constructed from reinforced plastic with stainless steel straps. Where applicable, blocks use #10 fasteners.

Key Features 

  • Delrin® ball bearings
  • Use in custom applications
  • Scored for rope
  • Use when Harken blocks are in need of repair. 
  • Sheave Diameter: 1 1/2" (38 mm) 
  • Max. Line Diameter: 3/8" (10 mm)  
  • Max. Working Load (MWL): 300 lb. (136 kg)  
  • Weight: .5 oz. (14 g) 
  • Width: 9/16" (14 mm)


The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

Related West Advisor Articles


Product Q & A