ACDelco® 16185M - Professional™ HVAC Heater Hose These premium aftermarket replacement molded heater hoses are manufactured to meet your expectations for fit, form, and function. Installs without buckling, bending out of shape, or straining at the connection for easy installation Do not use for fuel or oil transfer applications. Acdelco 16409m Professional 63981 ACDelco Professional/Gold 16409M Hoses And Pipes - HVAC Heater Hose For Sale Online Molded Heater Hose Canada. It does not indicate where the Heater Inlet. Professional / Gold; Molded; 5/8 x 18 11/16. 89033435. Alternate. More Info for ACDELCO 16409M Its diameter ranges from 1/4 in to 1 in to fit different types of vehicles ACDelco Professional, premium aftermarket Molded Heater Hoses are specially designed, factory-molded hoses to fit today’s smaller, tighter-fitting engine compartments. Manguera Calefactor Acdelco Profesional Repuesto Coche Manguera Calefactor ACDelco 16409M - Profesional, Moldeada, Diámetro 1/4 A 1 Pulgada Manguera Refrigerante Moldeada Less than 500 part numbers cover more than 1,200 applications to maximize coverage and reduce inventory