This is a brand new silicon nitride hot surface ignitor for furnaces - it replaces Carrier part number 332505-751, model SN086KX. Made by Surface Igniter LLC. If your furnace isn't lighting, the ignitor might be cracked or failed - this is a common fix. Silicon nitride is durable and heats up quickly to ignite the gas. Dimensions: about 8 inches high and 3 inches wide. Easy to install if you're comfortable with furnace repair - just disconnect the wires and swap the old one out. Works with Carrier and possibly other brands that use this style. Prevents cold winters without heat. Great for HVAC technicians or DIY homeowners. New in original packaging, never used. Keep your furnace running reliably. A critical component for safe ignition. Don't wait until it's freezing - have a spare on hand. Trust this quality replacement part. Get your heat back on quickly. Order today and be prepared for the next cold snap.