Reduction Gearbox

We add efficiency and reliability to your PT6 engine with FAA approved sun and planet gears, bushing kits, and prop seal runners.


Extex Engineered Products provides Aerospace Aftermarket parts for PT6A-6, 6A, 6B, 6/C20, 20, 20A, 20B, 21, 25, 25A, 27, 28, 34, 34AG, 34B, 36, 38, 41AG, 41, 42, 62, 135, and 135A engines to name just a few.

Turbine Module

The turbine section creates the power in the engine. Our PMA nozzles give you many options and are cut to your condition and flowed to your specification. Other parts in our inventory include bearings, damper segments, labyrinth seals and more.

Gearbox Module

Our gear technology that we provide improves lubrication and reduces wear resistance, and maintains the proper gearbox operating temperatures. Our bearings for the RR250 gearbox module are well known for their reliability worldwide.

Compressor Module

The compressor module is comprised of a series of blades and an impeller. It takes air and compresses it before moving to the combustion section. We stock many of these parts so you don’t have to.