Description This high-quality replacement decompression valve (short type) is designed to reduce the effort required when starting your chainsaw or power tool. Featuring SKU ST0658 and matching OEM reference STIHL 1128 020 9400, it provides a reliable seal and smooth operation for easier pull-starts. Built from durable materials, this valve ensures long-lasting performance and is a direct fit for compatible STIHL models. Features Short-type design for easy installation and precise fit. Reduces starter cord resistance, making cold starts effortless. Constructed from robust, wear-resistant materials for extended service life. Specifications SKU ST0658 OEM STIHL 1128 020 9400 Type Short Decompression Valve Fits STIHL MS 170 Chainsaw STIHL MS 180 Chainsaw STIHL MS 210 Chainsaw Product Line Chainsaw Engine Components – Precision replacement parts for outdoor power equipment starting systems.