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NWP Piston Assembly (50mm) for Stihl 044, MS 440 Chainsaws (Replaces 1128 030 2015)

NWP Piston Assembly (50mm) for Stihl 044, MS 440 Chainsaws (Replaces 1128 030 2015)

Only: $29.99
Item #: PKM 044
Currently out of stock. More due to arrive soon. Order now to reserve yours!

Replacement piston assembly from NWP. These piston assemblies are an economical option for your top end rebuild. Piston assembly includes a piston, rings, piston pin and circlips. Pistons have a thin coat of molybdenum on the skirt, which helps reduce friction and wear during initial break in period. The piston rings are made from ductile cast iron, so your chances of breaking them during installation are greatly reduced. We recommend replacing your cylinder gaskets and using a piston ring clamp set to help when changing a piston. Gaskets are sold separately.

Important Note: Some chainsaw models have different piston and cylinder options. Please see the tabs below for specifications and fitment requirements before ordering.

Replacement piston assembly from NWP. These piston assemblies are an economical option for your top end rebuild. Piston assembly includes a piston, rings, piston pin and circlips. Pistons have a thin coat of molybdenum on the skirt, which helps reduce friction and wear during initial break in period. The piston rings are made from ductile cast iron, so your chances of breaking them during installation are greatly reduced. We recommend replacing your cylinder gaskets and using a piston ring clamp set to help when changing a piston. Gaskets are sold separately.

Important Note: Some chainsaw models have different piston and cylinder options. Please see the tabs below for specifications and fitment requirements before ordering.

Item #: PKM 044
*Please select one valid option from each style
Currently out of stock. More due to arrive soon. Order now to reserve yours!
Fits the following models:
  • Stihl 044* (After S/N X 29 382 283), MS 440
  • Replaces Part Number 1128 030 2015
  • Bore 50mm
  • Rings 50mm x 1.2mm Ductile Split Groove
  • Piston Pin 12mm x 7mm x 33mm
  • Circlips 12mm
  • Head Type Flat
  • Height 39.5mm
  • Compression/Pin Top to top of Piston 15.5mm
  • Compression/Pin Center to top of Piston 21.5mm
  • Important Note *Older 044 chainsaws (before serial number X 29 382 283) have a 10mm wrist pin. This piston will not fit older style chainsaws. Please check before ordering.

View the installation instructions (743K pdf file)

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