This listing is about a brand new top-quality after-marketPiston Kit in its original package for STIHL MS 171, MS 171C-BE, MS171-Z model (Machine Numbers up to 289582455), 37mm in diameter, and replaces OEM Part #1139 030 2003. This item does not fit newer editions of STIHL MS171 models with bore size 38mm.
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![Piston Kit for STIHL MS171 Chainsaw (37mm) [#11390302003]](https://www.dlastore.com/media/catalog/product/cache/ba670861d278867c6cf425419441a5b6/t/u/tumbnail_45d9d2c5-a69b-4ae0-88be-ca653a9139ac.jpg)
This listing is about a brand new top-quality after-market