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44mm piston pin ring circlip kit for Stihl MS251 chainsaw

LAHDEK

LAHDEK 44mm Piston Pin Ring Circlip Kit For Stihl MS251 Chainsaw

SKU CH-243Y-SCS8E

44 mm piston pin ring circlip kit fits Stihl MS251 chainsaws with 10 mm pin OD

  • 44 mm piston diameter fits Stihl MS251 precisely
  • 10 mm pin OD matches original specs exactly
  • Two rings and two circlips included for complete rebuild
  • Replaces OEM part 1143 030 2007 directly
  • New single-cylinder 2-stroke kit ready for petrol power

LAHDEK 44mm Piston Kit

This LAHDEK kit supplies a complete piston assembly for the Stihl MS251 chainsaw. The package includes one piston, one pin, two rings and two circlips. It replaces OEM reference 1143 030 2007 and is supplied in new condition. The piston diameter is 44mm with a 10mm pin outer diameter.

Suits MS251 single-cylinder 2-stroke rebuilds

This kit fits the Stihl MS251 single-cylinder two-stroke engine. It is intended for owners or mechanics performing a top-end overhaul on that specific model. Buyers who need a different piston diameter or who are repairing another chainsaw model should look for the correct part number.

44mm piston diameter decides fit

The 44mm piston diameter is the critical specification that determines compatibility with the cylinder bore. The pin outer diameter of 10mm must also match the connecting rod small end. Verify both dimensions against your engine specifications before ordering.

Highlights

  • 44 mm piston diameter fits Stihl MS251 precisely
  • 10 mm pin OD matches original specs exactly
  • Two rings and two circlips included for complete rebuild
  • Replaces OEM part 1143 030 2007 directly
  • New single-cylinder 2-stroke kit ready for petrol power

Specifications

No published specifications for this item yet.

Questions about this item

What piston diameter does this kit fit?

The kit is built for a 44mm piston diameter and matches the Stihl MS251 cylinder bore exactly.

Which orientation do the two circlips need when the 10mm pin is installed?

Both circlips must seat fully in their grooves with the open ends facing away from the piston crown; missing one groove lets the pin walk.

When should the two rings and circlips be replaced again?

Replace them whenever the piston is removed or if ring end-gap exceeds the service limit during a top-end inspection.

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