If your boat is currently still equipped with 3/8" pintles, and you like the bushed gudgeon idea, you can either:
• Upgrade your pintles to 1/2" diameter also or...
• Purchase these 1/2" gudgeons and then replace the 1/2" bushing with the 3/8" bushing #D2254 pictured below under "Required and Related Products". Then you can use your 3/8" pintles in the heavy duty gudgeons.

• Inside diameter: 1/2"
• Distance between outboard mount holes: 1-9/16"
• Distance between inboard mount holes: 1-3/8"
• Diameter of mount holes: cleared for 1/4" fasteners
• Distance from mount surface to center of bushed ferrule: 3/4"
• Width overall: 5-1/4"
• Height overall: 1"