Please fill out the form below for Harness Downlock Sensor 1 and get a quote for part number 17300-253 by Messier Dowty, please include required quantity along with expected turn around time. Our knowledgeable account manager will reply you shortly. Also check for the related parts for part number 17300-253. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.