With a substantial 1 1/4" NPT connection and a 15 Cv flow coefficient

this adapter also fits the VR4200 and VR4300 lines

the furnace "short cycling" between stages

Designed for rugged durability

Using it with other brands may result in improper torque transfer or linkage failure

York S1-2805-4711 Wire Harness 318172-701 With a substantial 1 1/4"The York S1 2805 4711 Wire Harness is a critical OEM furnace wiring component engineered for high precision interface within Johnson Controls components and York residential heating units. As a technical professional, you understand that field repairing factory looms often leads to high resistance junctions or terminal back out. This S1 2805 4711 wire harness eliminates those risks by providing factual pin to socket alignment for HVAC motor harness