Please fill out the form below for N L A Valve Auto Valve Aerostar and get a quote for part number 491-946 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 491-946. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.