# MagnaFlow 5421205 California Universal Catalytic Converter (2.25" ID/2.25" OD) for 2004-2016 Audi S4 and More ### Performance Overview Magnaflow's California Catalytic Converter is designed to be CARB compliant. The catalytic converter's ribbed body is designed to minimize distortion and expansion of the body to hold the ceramic catalyst in place. magnaflow's Catalytic Converters are made of stainless steel and are backed by their limited lifetime warranty. ### Key Features - Brand: MagnaFlow - Part number: 5421205 - Product type: California Universal Catalytic Converter (2.25" ID/2.25" OD) - Designed for compatible vehicle applications listed on this page ### Vehicle Fitment - 2007 Audi S4, Note: Avant, Base, Cabriolet; 4.2L; 2.25"; 2.25"; Automatic Trans - 2008 Audi S4, Note: Avant, Base, Cabriolet; 4.2L; 2.25"; 2.25"; Automatic Trans - 2009 Audi S4, Note: Cabriolet; 4.2L; 2.25"; 2.25"; Automatic Trans - 2009 Bmw Z4, Note: Sdrive35I; 3.0L; 2.25"; 2.25" - 2010 Bmw Z4, Note: Sdrive35I; 3.0L; 2.25"; 2.25" - 2012 Bmw Z4, Note: Sdrive35I, Sdrive35Is; 3.0L; 2.25"; 2.25" - 2013 Bmw Z4, Note: Sdrive35I, Sdrive35Is; 3.0L; 2.25"; 2.25" - 2014 Bmw Z4, Note: Sdrive35I, Sdrive35Is; 3.0L; 2.25"; 2.25" ### FAQ **Will this fit my vehicle?** Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase. **What part number is this?** The listed part number is 5421205. **Is this product designed for direct replacement?** Yes. This product is intended to match compatible vehicle applications listed in the fitment section. **Should I confirm fitment before ordering?** Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering. ### Common Searches - California Universal Catalytic Converter (2.25" ID/2.25" OD) for Audi S4 - 5421205 fitment - MagnaFlow California Universal Catalytic Converter (2.25" ID/2.25" OD) - 2004 Audi S4 California Universal Catalytic Converter (2.25" ID/2.25" OD) ### Vehicle Fitment Table Year Make Model Position Fitment Precision Note 2007 Audi S4 Avant, Base, Cabriolet; 4.2L; 2.25"; 2.25"; Automatic Trans 2008 Audi S4 Avant, Base, Cabriolet; 4.2L; 2.25"; 2.25"; Automatic Trans 2009 Audi S4 Cabriolet; 4.2L; 2.25"; 2.25"; Automatic Trans 2009 Bmw Z4 Sdrive35I; 3.0L; 2.25"; 2.25" 2010 Bmw Z4 Sdrive35I; 3.0L; 2.25"; 2.25" 2012 Bmw Z4 Sdrive35I, Sdrive35Is; 3.0L; 2.25"; 2.25" 2013 Bmw Z4 Sdrive35I, Sdrive35Is; 3.0L; 2.25"; 2.25" 2014 Bmw Z4 Sdrive35I, Sdrive35Is; 3.0L; 2.25"; 2.25" 2015 Bmw Z4 Sdrive35I, Sdrive35Is; 3.0L; 2.25"; 2.25" 2016 Bmw Z4 Sdrive35I, Sdrive35Is; 3.0L; 2.25"; 2.25" 2012 Buick Lacrosse Base, Convenience, Leather, Premium; 2.4L; 2.25"; 2.25" 2013 Buick Lacrosse Base, Leather; 2.4L; 2.25"; 2.25" 2014 Buick Lacrosse Base, Leather; 2.4L; 2.25"; 2.25" 2015 Buick Lacrosse Base, Leather; 2.4L; 2.25"; 2.25" 2016 Buick Lacrosse Base, Leather; 2.4L; 2.25"; 2.25" 2012 Buick Regal Base; 2.4L; 2.25"; 2.25" 2013 Buick Regal Base, Premium; 2.4L; 2.25"; 2.25" 2014 Buick Regal Base, Premium; 2.4L; 2.25"; 2.25" 2015 Buick Regal Base, Premium; 2.4L; 2.25"; 2.25" 2016 Buick Regal Base, Premium; 2.4L; 2.25"; 2.25" 2008 Chevrolet Cobalt Ls, Lt, Sport, Ss; 2.0L, 2.2L, 2.4L; 2.25"; 2.25"; Manual Trans 2009 Chevrolet Cobalt Ls, Lt, Ss; 2.0L, 2.2L; 2.25"; 2.25"; Manual Trans 2010 Chevrolet Cobalt Base, Ls, Lt, Ss; 2.0L, 2.2L; 2.25"; 2.25" 2008 Chevrolet Hhr Ss; 2.0L; 2.25"; 2.25" 2009 Chevrolet Hhr Ss Panel, Ss; 2.0L; 2.25"; 2.25" 2010 Chevrolet Hhr Ss; 2.0L; 2.25"; 2.25" 2014 Chevrolet Impala Eco; 2.4L; 2.25"; 2.25" 2009 Chevrolet Malibu Ls, Lt; 3.5L; 2.25"; 2.25" 2013 Chevrolet Malibu Eco; 2.4L; 2.25"; 2.25" 2014 Chevrolet Malibu Eco; 2.4L; 2.25"; 2.25" 2014 Chevrolet Ss Base; 6.2L; 2.25"; 2.25" 2015 Chevrolet Ss Base; 6.2L; 2.25"; 2.25" 2016 Chevrolet Ss Base; 6.2L; 2.25"; 2.25" 2007 Chrysler Crossfire Base, Limited; 3.2L; 2.25"; 2.25" 2008 Chrysler Crossfire Limited; 3.2L; 2.25"; 2.25" 2004 Ford Crown Victoria Base, Lwb, Lx, Lx Sport, Police Interceptor, S; 4.6L; 2.25"; 2.25" 2005 Ford Crown Victoria Base, Lwb, Lx, Lx Sport, Police Interceptor, S, Special Edition; 4.6L; 2.25"; 2.25" 2006 Ford Crown Victoria Base, Fleet, Lwb, Lx, Lx Sport, Police Interceptor; 4.6L; 2.25"; 2.25" 2007 Ford Crown Victoria Base, Fleet, Lwb, Lx, Police Interceptor; 4.6L; 2.25"; 2.25" 2008 Ford Crown Victoria Base, Fleet, Lwb, Lx, Police Interceptor; 4.6L; 2.25"; 2.25" 2004 Ford Taurus Lx, Se, Sel, Ses; 3.0L; 2.25"; 2.25" 2005 Ford Taurus Se, Sel; 3.0L; 2.25"; 2.25" 2006 Ford Taurus Se, Sel; 3.0L; 2.25"; 2.25" 2007 Ford Taurus Se, Sel; 3.0L; 2.25"; 2.25" 2010 Hyundai Genesis Coupe 2.0T, 2.0T Premium, 2.0T R-Spec, 2.0T Track; 2.0L; 2.25"; 2.25" 2011 Hyundai Genesis Coupe 2.0T, 2.0T Premium, 2.0T R-Spec; 2.0L; 2.25"; 2.25" 2012 Hyundai Genesis Coupe 2.0T, 2.0T Premium, 2.0T R-Spec; 2.0L; 2.25"; 2.25" 2013 Hyundai Genesis Coupe 2.0T, 2.0T Premium, 2.0T R-Spec; 2.0L; 2.25"; 2.25" 2014 Hyundai Genesis Coupe 2.0T, 2.0T Premium, 2.0T R-Spec; 2.0L; 2.25"; 2.25" 2004 Lincoln Town Car Executive, Executive L, Protection Series, Signature, Ultimate, Ultimate L; 4.6L; 2.25"; 2.25" 2005 Lincoln Town Car Executive, Executive L, Protection Series, Signature, Signature L, Signature Limited; 4.6L; 2.25"; 2.25" 2006 Lincoln Town Car Designer Series, Executive, Executive L, Protection Series, Signature, Signature L, Signature Limited; 4.6L; 2.25"; 2.25" 2007 Lincoln Town Car Designer Series, Executive, Executive L, Signature, Signature L, Signature Limited; 4.6L; 2.25"; 2.25" 2008 Lincoln Town Car Executive, Executive L, Signature L, Signature Limited; 4.6L; 2.25"; 2.25" 2009 Lincoln Town Car Executive, Executive L, Signature L, Signature Limited; 4.6L; 2.25"; 2.25" 2010 Lincoln Town Car Executive, Executive L, Signature L, Signature Limited; 4.6L; 2.25"; 2.25" 2011 Lincoln Town Car Executive L, Signature L, Signature Limited; 4.6L; 2.25"; 2.25" 2008 Mercedes-Benz C63 Amg Base; 6.3L; 2.25"; 2.25" 2009 Mercedes-Benz C63 Amg Base; 6.3L; 2.25"; 2.25" 2010 Mercedes-Benz C63 Amg Base; 6.3L; 2.25"; 2.25" 2004 Mercedes-Benz Cl500 Base; 5.0L; 2.25"; 2.25" 2005 Mercedes-Benz Cl500 Base; 5.0L; 2.25"; 2.25" 2010 Mercedes-Benz Cl63 Amg Base; 6.3L; 2.25"; 2.25" 2005 Mercedes-Benz Clk320 Base; 3.2L; 2.25"; 2.25" 2004 Mercedes-Benz Clk500 Base; 5.0L; 2.25"; 2.25" 2005 Mercedes-Benz Clk500 Base; 5.0L; 2.25"; 2.25" 2008 Mercedes-Benz Clk63 Amg Base, Black Series; 6.3L; 2.25"; 2.25" 2008 Mercedes-Benz Cls63 Amg Base; 6.3L; 2.25"; 2.25" 2009 Mercedes-Benz Cls63 Amg Base; 6.3L; 2.25"; 2.25" 2010 Mercedes-Benz Cls63 Amg Base; 6.3L; 2.25"; 2.25" ## Details - **Price:** 532.15 CAD - **Vendor:** MagnaFlow - **Type:** California Universal Catalytic Converter (2.25" ID/2.25" OD) - **Tags:** 2007 Audi S4, 2007 Chrysler Crossfire, 2008 Audi S4, 2008 Chevrolet Cobalt, 2008 Chevrolet Hhr, 2008 Chrysler Crossfire, 2009 Audi S4, 2009 Bmw Z4, 2009 Chevrolet Cobalt, 2009 Chevrolet Hhr, 2009 Chevrolet Malibu, 2010 Bmw Z4, 2010 Chevrolet Cobalt, 2010 Chevrolet Hhr, 2012 Bmw Z4, 2012 Buick Lacrosse, 2012 Buick Regal, 2013 Bmw Z4, 2013 Buick Lacrosse, 2013 Buick Regal, 2013 Chevrolet Malibu, 2014 Bmw Z4, 2014 Buick Lacrosse, 2014 Buick Regal, 2014 Chevrolet Impala, 2014 Chevrolet Malibu, 2014 Chevrolet Ss, 2015 Bmw Z4, 2015 Buick Lacrosse, 2015 Buick Regal, 2015 Chevrolet Ss, 2016 Bmw Z4, 2016 Buick Lacrosse, 2016 Buick Regal, 2016 Chevrolet Ss, 5421205, Auto Parts, Automotive, California Universal Catalytic Converter (2.25" ID/2.25" OD), Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-5421205, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 532.15 CAD | In stock | ## Images - MagnaFlow 5421205 California Universal Catalytic Converter (2.25" ID/2.25" OD) --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-audi-s4-catalytic-converter-carb-5421205) > Updated: 2026-07-16