O.S. Engine OS29781500 Carburettor Gasket for GT55 Models  [OS29781500]

Seal purpose and compatible applications

The OS29781500 GT55 gasket serves as a replacement seal for model carburettors, intended to prevent air or fuel escape at mating surfaces that would upset mixture balance and idle stability.

It is targeted at maintenance and rebuild work on glow/nitro engine carburettors in model vehicles. As a small, service-level component, it restores sealing after disassembly for cleaning, needle replacement, or minor tuning. Plan to replace it as part of routine carburettor servicing.

Fitting summary: remove the carburettor from the model, disassemble only enough to access the mating faces, clean all contact surfaces, install the OS29781500 gasket, and reassemble following correct alignment and torque guidance. Perform a bench check of idle and throttle before reinstalling the carburettor.

Compatibility tips: if you experience inconsistent running after a rebuild, verify the gasket seating and also check surrounding connections—intake couplings, throttle bushings, and mounting screws can create air paths that look like gasket leaks.