NBK-20428K – Pilot Assembly 170° LP Kit – AO Smith / LochinvarThe NBK-20428K Pilot Assembly 170° LP Kit is a liquid propane (LP) pilot assembly designed for AO Smith and Lochinvar water heaters. This OEM-equivalent replacement matches AO Smith part number 100109253 and Lochinvar part number 9003472005. Featuring a precise 170-degree angled configuration, it’s ideal for systems requiring specific pilot orientation in LP-fueled applications, ensuring safe and consistent ignition performance.Key Features:LP Gas Compatible – Engineered specifically for propane-fueled water heaters170° Orientation – Designed for installations that require angled pilot tubingOEM-Quality Fit – Direct replacement for AO Smith 100109253 and Lochinvar 9003472005 with no modifications neededSpecifications:SKU: 20428KCategory: Water Heater Parts / Pilot AssembliesFuel Type: Liquid Propane (LP)Orientation: 170°OEM Brands: AO Smith, LochinvarReplaces OEM Parts: 100109253, 9003472005UPC: 810069184999Application: AO Smith and Lochinvar LP gas water heatersEquivalent To:AO Smith: 100109253Lochinvar: 9003472005Why Choose the NBK-20428K?The NBK-20428K Pilot Assembly offers a dependable solution for maintaining safe and efficient ignition in LP-fueled water heaters. Its angled 170° design provides secure fitment in tight spaces, while the OEM-equivalent build ensures reliable flame control and long-term performance in both residential and commercial systems.Shipping & Availability:Special order from NBK. Please allow 1–2 business days for processing before shipping.








