The Johnson and Starley ignitor is a replacement pilot assembly that normally includes a pilot bracket, injector, electrode, and thermocouple. The pilot flame ignites gas entering the boiler's main burner through the gas valve when the system is switched on.

Brand Name	Johnson & Starley
Colour	None
Material	None
Manufacturer Model No	BOS01971
Wear Type	None
Type	Ignition Units
Certifications Met	None
Country of Origin	None
Protects From	None
Waterproof	None
Number of Pockets	None
Compatible With	J25-32, J54-64, Ja33-43, Jt19-25Mk1, Jt19-25Mk2, Jwd38-50 and Q44
Waist Size	ad97cj94gs