Grundfos Pumps 506174 Cartridge AssemblyGrundfos Pumps 506174 is a Replacement Cartridge Assembly designed for the UP15 family. This OEM grade cartridge replacement fits multiple configurations: 115 230V UP15 18B5 B7, 115V UP15 8BUC5 BUC7, 115 230V UP15 20SPA, 230V UP15 18SU SF, and 115 230V UP15 15SPA. Built for reliable performance, it ensures steady flow, protects pump internals, and minimizes downtime during maintenance. As a genuine Grundfos spare part, it preserves efficiency and

Easy installation designed for quick replacement with minimal downtime

the CAS-6 enhances venting performance

The unit operates up to 160°F

This packaging gland is a practical

Ambient Temperature: 32–140°F

Designed for easy installation in compact spaces

Relative humidity: up to 90%

and condenser fan cycling to optimize efficiency and reliability

it supports standard gas supply and durable operation

Chrome plated brass body for durability and corrosion resistance

This 21-inch flue collector box is a reliable replacement part that fits compatible Goodman units and keeps exhaust paths clean and efficient

The included gasket ensures a tight seal around the burner assembly