Please fill out the form below for Blocks R44 And R66 W F198 1 and get a quote for part number MT146-4 by Robinson Helicopter, 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 MT146-4. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.