This OEM Weil McLain replacement part features a 2

the unit comes pre-charged with POE (Polyolester) oil

Always verify the part number in your technical manual

The Spence 04-01623-00 Diaphragm is a critical 3-1/2 inch pressure-sensing component engineered specifically for Spence Type D pilots

How do I verify if this fits my York furnace

Danfoss 013G-1246 Limitation Pins This OEM Weil McLain replacementThe Danfoss 013G 1246 Limitation Pins are critical mechanical components designed for specific radiator valve stroke limitation. Engineered for compatibility with RA 2000 series operators and standard thermostatic radiator valves (TRV), these pins allow technicians to establish precise temperature range locking and limiting. By inserting these pins into the integrated scale of any Danfoss RA 2990 or RA 2940 sensor, you can effectively prevent