Product Details:

This is the Cylinder Liner for the
O.S. 91HZ F3C Competition Helicopter Engine (OSMG1975) and the
O.S. 91HZ-PS 3D PD-08 Pump (OSMG1976).

FEATURES: 5-ports cut in
Constructed of steel

INCLUDES: One Cylinder liner

SPECS: Height: 45mm (1.77")
Outside Diameter: 31mm (1.2")
Inside Diameter (bore): 27.65mm (1.09")

REQUIRES: Installation into the OS .91HZ-PS or the O.S. .91HZ F3C