The Engine Housing for Stihl HS81 HS86R Hedge Trimmer OEM# 4237 021 3000 is a high-quality replacement part designed for Stihl hedge trimmers. Manufactured by Farmertec, this 2-stroke engine housing is compatible with Stihl HS 81 R models and is a genuine OEM product. Made in China, this gas-powered engine housing is a reliable and durable component for maintaining your outdoor power equipment. Assembly is required, but this product will help ensure smooth operation and optimal performance for your hedge trimmer.