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Pilot Jet SIT ø 0.21 mm G6057036 is a precision-machined natural-gas orifice manufactured in Italy by SIT. Featuring a calibrated 0.21 mm aperture and an M4×0.75 mm male thread, this brass jet delivers consistent pilot-flame ignition in professional gas appliances. Its corrosion-resistant construction and tight manufacturing tolerances ensure reliable performance and long service life. Supplied without gasket for versatile installation, it fits any burner requiring a 0.21 mm SIT jet.