This adapter utilizes 3/4" NPS (National Pipe Straight) threads

Common Questions What is the diameter of the D-3153-103 linkage rod

Key Benefits: Forged Brass Construction: High copper content (65%) prevents fatigue and failure compared to cast alternatives

Whether you are performing a furnace burner orifice replacement during a standard tune-up or restoring a unit after a conversion

As an OEM York replacement part

Lochinvar & A.O. Smith 100208101 Blower Gasket This adapter utilizes 3/4" NPSThe Lochinvar 100208101 Blower Gasket is a critical sealing component engineered for high efficiency condensing boilers and water heaters. Designed to maintain the airtight integrity of the combustion assembly, this high temperature gasket prevents flue gas leakage and ensures proper static pressure within the blower housing. This OEM part is a direct replacement for GKT2436 and GKT2436K, offering exact dimensional fitment for Lochinvar Knight and A.