Bell and Gossett 118473 Cast Iron Coupler Assembly

Original price was: $91.79.Current price is: $61.77.

11 in stock

SKU: 36644 Category:


The Bell and Gossett 118473 Cast Iron Coupler Assembly is a popular replacement part for circulating pumps in various hydronic heating systems. Here’s a breakdown of its key features and benefits:


  • Cast iron construction: Provides durability and long-lasting performance, resistant to corrosion and wear.
  • 1/2″ x 1/2″ shaft size: Fits pumps with 1/2″ shafts on both the motor and impeller.
  • Clockwise rotation: Designed for pumps rotating in a clockwise direction.
  • Spring-loaded design: Accommodates slight misalignment between the motor and impeller shafts, reducing noise and vibration.
  • Easy installation: Pre-assembled design simplifies the replacement process, requiring minimal tools and effort.
  • Wide compatibility: Works with various Bell & Gossett and other brands of circulating pumps.


  • Restores pump functionality: Replaces a worn-out coupler to restore proper power transmission between the motor and impeller, ensuring optimal pump performance.
  • Reduces noise and vibration: Spring-loaded design minimizes misalignment and noise, leading to a quieter and smoother pump operation.
  • Improves system efficiency: A properly functioning coupler ensures efficient power transfer, optimizing pump performance and reducing energy consumption.
  • Cost-effective solution: Replacing only the coupler is typically more affordable than purchasing a new pump, making it a cost-saving repair option.
  • Easy to install: Pre-assembled design simplifies the replacement process, making it suitable for DIY enthusiasts with basic plumbing knowledge.

Things to consider:

  • Compatibility: Ensure the 118473 coupler matches your specific pump model and shaft sizes.
  • Rotation direction: Verify the coupler’s clockwise rotation matches your pump’s operating direction.
  • Installation instructions: Follow the manufacturer’s instructions for proper installation and safety precautions.
  • Professional assistance: If unsure about any aspect of the replacement process, consider seeking help from a qualified plumber or HVAC technician.

Overall, the Bell and Gossett 118473 Cast Iron Coupler Assembly is a reliable and cost-effective solution for restoring proper pump performance in various hydronic heating systems. Its durable construction, spring-loaded design, and ease of installation make it a popular choice for both DIY enthusiasts and professional technicians.

Additional information

Weight 0.74 lbs


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.