Precision-engineered Knuckle Header & Silver Solder Set for GP 178 engines, designed to achieve a perfect, vibration-free exhaust fit for your model aircraft. Includes one high-quality adjustable knuckle header and one 10 cm silver solder rod for secure assembly.

Key Features

✅ 1 × Knuckle Header for GP 178 engines
✅ 1 × Silver Solder Rod – 10 cm (approx.)
✅ Flange knuckle bends up to 30° in each direction
✅ Second knuckle adjustable up to 55 mm
✅ Enables a precise custom-fit exhaust connection
✅ Ideal for professional model aircraft engine installations

Perfect For

• RC aircraft using the GP 178 engine

• Builders who require a precisely aligned exhaust system

• Modellers seeking a custom-fit header solution for silencers

Specifications

• Compatibility: GP 178 engine

• Bending range: 30° each direction

• Adjustment: Up to 55 mm

• Silver solder length: 10 cm (approx.)

• Material: Precision metal components

Installation Notes

After the engine is installed, fix the knuckle header to the engine and bend it carefully to align perfectly with the silencer. Once aligned, remove the header with caution and solder the knuckles using the supplied silver solder rod. The result is a perfectly fitted, durable header ready for long-term use.

Why Buy from Probuild Aircraft

✅ Official UK Stockist – 100% genuine 
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