Application: 2002-2010 Audi A42002-2012 Audi A4 Quattro2007-2008 Audi RS42004-2009 Audi S4" What is HVAC Heater Core Spectra? Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium heaters meet or exceed the performance of the original equipment they replace.; Variable pipe positioning to accommodate restrained casing fit; Unit is leak tested to ensure product quality at installation; High density fin count for maximum heat dissipation; Precisely tooled tanks for strength and durability; Optimum tube pitch spacing to maximize heat transfer; Installation guidelines provided in the box. .
