Proline® Piston Rings For Stihl Early 025 42MM Piston, FS450, SP450, SP451

Proline® Piston Rings 42MM × 1.2MM For Stihl Echo Shindaiwa

$8.95

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SKU: PR4212 Barcode: 21382179

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Description Fits Models

Proline® piston rings for select Stihl, Echo and Shindaiwa equipment. Please verify your OEM part number for proper fitment. Actual pictures shown. Parts are not made in China.

Includes:

  • Piston rings (2)

Specs:

  • Size: 42mm × 1.2mm
  • End gap type: Side pin
  • Color: Silver

Replaces OEM Numbers:

  • Stihl: 1121 034 3001, 11210343001, 1123 034 3003, 11230343003
  • Echo / Shindaiwa: 10001143230, 100011-43230

⚠️ IMPORTANT FITMENT

  • 025: Fits early versions equipped with a 42mm piston
  • Later 025 versions use a 42.5mm piston and require a different piston ring
  • Verify your piston size or OEM part number before ordering

Stihl

Chainsaws:

  • 025 — 42mm version only

Trimmers / Brushcutters:

  • FS450, FS450K
  • FR450
  • FR480, FR480C

Harvesters:

  • SP450
  • SP451
  • SP481

Echo

Trimmers / Brushcutters:

  • CLS-4600, CLS-4610
  • RM-460K, RM-460KS, RM-465
  • SRM-4600
  • SRM-4605, SRM-4605U

Shindaiwa

Brushcutters:

  • B460