4247 007 1002 STIHL Piston – Genuine OEM Pump Piston for SG 20 Sprayer4247 007 1002 STIHL Piston Genuine OEM Pump Piston for SG 20 Sprayer The STIHL Piston (4247 007 1002) is a genuine OEM replacement piston designed for select STIHL sprayers, including the SG 20 model. This piston is a critical internal component within the pump assembly, responsible for generating consistent pressure and ensuring reliable spray performance during professional spraying applications. Pump pistons are essential for smooth operation and
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