It serves as a direct cross-reference for part numbers GKT3408

Durable Construction: Features high-grade insulation and a terminal connector designed for HVAC sensor troubleshooting and vibration resistance

mechanical joints in refrigerant lines

protecting the primary heat exchanger from stress fractures and overheating

This OEM replacement gasket is physically and technically identical to ARM1010 (previously 100133544)

Weil McLain 383-500-604 Fuses It serves as a directThe Weil McLain 383 500 604 is a critical 12A slow blow fuse designed specifically for the protection of advanced control modules in condensing gas boilers. For service technicians troubleshooting a blank display or a non responsive Ultra U Control module, these high amperage glass fuses are the standard requirement to safeguard line voltage circuits against transient surges without premature tripping. Unlike standard fast acting alternatives, the