The Venturi Gas Tube is an OEM replacement part for Bosch gas cooktop ranges. Its primary function is to ensure an optimal gas/air mixture for consistent and efficient burner combustion, thereby enhancing the overall performance of the cooktop. Causes involve normal wear of internal components from continuous heating and cooling cycles. Corrosion damage may also disrupt the venturi tube over time. Symptoms of a faulty venturi gas tube include: Unstable or hard-to-control flame levels Potential issues shifting burner flames out of their intended position Safety risks including carbon monoxide from improper fuel/air balance This OEM Bosch part is also compatible with Thermador, Gaggenau and some Kenmore models.00189023 (AP2825260) replaces 415133, 00411266, 00415133, 00421676, 1044401, 15-10-154, 189023, 20-02-039, 411266, 421676, AH3440451, EA3440451, PS3440451, PS8698345.