Oleo-Mac GS350 Genuine Piston Kit 40mm 50240164 GS35C 935 & EFCO MT350 MT3500 135 38.9CC Chainsaws

Restore Compression. Reclaim Power. – The Definitive Engine Revival Kit.

This Genuine Piston Kit (Part Number: 50240164) is the authentic OEM assembly engineered to renew the core of your 38.9cc chainsaw engine. Manufactured to exacting factory specifications, this 40mm kit delivers the precise fit, optimal compression, and unmatched durability required to return your saw to its original performance and reliability.

Core Advantages & Technical Benefits:

✔️ GENUINE OEM SPECIFICATION, GUARANTEED FIT
As the factory-original part (50240164), this kit guarantees perfect compatibility and seamless integration with your engine's cylinder, ensuring precise ring seal and restoration of factory compression ratios for peak performance.

✔️ COMPLETE PISTON ASSEMBLY RESTORATION
This kit systematically solves critical failures caused by a worn piston: loss of compression, cylinder scoring, seizure, and consequent power loss. It returns your saw to like-new combustion efficiency, throttle response, and cutting power.

✔️ PRECISION ENGINEERED FOR THE 38.9CC PLATFORM
The 40mm piston is specifically weighted and configured for the Oleo-Mac/EFCO 38.9cc engine family. This ensures perfect balance, reduces vibration, and delivers the designed power curve for optimal operational torque.

✔️ BUILT FOR PROFESSIONAL ENDURANCE
Constructed with high-grade aluminum alloy and coated piston rings, this kit is engineered to withstand extreme temperatures and operational stress, providing a long-lasting solution for demanding professional use.

✔️ DIRECT, MODEL-SPECIFIC REPLACEMENT
This is a complete, ready-to-install piston kit for models including:

• Oleo-Mac: GS350, GS35C, 935 Chainsaws

• EFCO: MT350, MT3500, 135 Chainsaws
  (This is the critical OEM piston kit for rebuilding the top end of the 38.9cc chainsaw engines listed.)

Professional Application & Installation Advisory:
This kit is essential for professional mechanics and experienced users performing a top-end rebuild. For optimal results and safety:

1. Professional Installation by a qualified technician is strongly recommended to ensure proper cylinder inspection, ring gap setting, and assembly lubrication.

2. A complete engine diagnosis is advised. This kit replaces the piston; the cylinder must be inspected for wear and damage separately. Always inspect the crankshaft bearings and seals during rebuild.

3. Use the manufacturer-specified fuel/oil mix and follow the service manual procedures for engine break-in.

Package Contents:

• 1 x Genuine Piston (40mm)

• 1 x Set of Piston Rings

• 1 x Wrist Pin & Circlips
  (Components are packaged as per OEM specification for part number 50240164. Includes all necessary parts for piston replacement.)

⚠️ Final Verification is Your Responsibility:
Cross-check your chainsaw's model number, brand, and engine displacement (38.9cc) against the compatibility list above. This kit is for engines requiring a 40mm piston. Incorrect application will cause severe engine damage and voids any warranty.

 THE PICTURES CAN TELL MORE THAN WE CAN. WHAT YOU SEE IS WHAT YOU WILL RECEIVE, NOTHING MORE AND NOTHING LESS! PLEASE CHECK CAREFULLY THE PICTURE(S) FOR COMPATIBILITY BEFORE ORDERING.

Tags: 50240164, piston kit, Oleo-Mac GS350, EFCO MT350, chainsaw piston, 40mm piston, OEM parts, chainsaw engine repair, 38.9cc