Please fill out the form below for Exh Wye and get a quote for part number 643861-109 by Teledyne Continental Motors, 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 643861-109. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.