alongside a lock-washer coaxial connection to resist loosening from thermal expansion or mechanical vibration

By maintaining direct compatibility with Trane UCM (Unit Control Module) platforms

Most failures are due to excessive heat exposure

it is the official manufacturer-designated replacement for the original 8201-008 and is backwards compatible with all units calling for that part number

Designed with a 3/8" sweat ODF connection and a compact 5 cubic inch steel shell

York S1-025-32625-000 Ignitor alongside a lock-washer coaxial connectionThe York S1 025 32625 000 Ignitor is a service grade 120V hot surface ignitor designed for professional scale reliability in gas fired furnace applications. This genuine OEM component, often identified in regional technical manuals as the Norton 271N, features a high density silicon carbide element engineered for rapid thermal response and resistance to structural oxidation. This specific model is the direct technical replacement for York 27N model