Please fill out the form below for Elbow Whn 0 Rb 491 166 and get a quote for part number 559-004 by Piper Aircraft Inc, 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 559-004. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.