Description
42mm piston kit fits Stihl FR450, FS450, SP450 and SP451 two-stroke strimmers is manufactured to OEM specifications, ensuring a precise fit and fully restored cylinder compression for dependable engine performance. Featuring the correct 42mm bore diameter, it replaces part number 4128 030 2005 and delivers a consistent compression seal, strong engine output and reliable engine starting, making it a trusted choice for piston replacement on the Stihl FR450, FS450, SP450 and SP451.
Fits specified Stihl models:
- Stihl FR350
- Stihl FR450
- Stihl FR480
- Stihl FR480C
- Stihl FS400
- Stihl FS450
- Stihl FS480
- Stihl SP400
- Stihl SP450
- Stihl SP451
- Stihl SP481








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