Replacement Piston Pin for GF40 - O.S. Engine OS49406010  [OS49406010]

Precision piston pin for GF40 series

Designed as an RC-scale replacement, this piston pin fits the GF40 engine family and is the cylindrical link between piston and connecting rod on glow engines. The product is presented by model number only and should be treated as a component for regular servicing and repairs.

Practical assembly advice: check the pin fits flush in the piston bore and the rod small end, confirm retention devices such as circlips are correctly seated, and remove any swarf prior to installation. Light lubrication during fitting helps prevent scoring; do not press the pin in with excessive force.

From a tuning perspective the pin influences lateral clearance and alignment within the piston assembly. Proper seating helps maintain compression uniformity and limits wear at the piston-to-rod interface, supporting consistent engine response during setup and inspection tasks.