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Where is your Vehicle Registered?
WHAT EMISSIONS STANDARD IS YOUR VEHICLE EQUIPPED WITH?
You can find out by inspecting the emissions sticker that is located in your engine compartment.
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What is your EFN # ?
You can identify your vehicle’s EFN by checking your emission tag located under the hood, on the suspension tower or on the radiator shroud.
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Shop all 2011 BMW 328i Catalytic Converters
Need a replacement catalytic converter for your 2011 BMW 328i? MagnaFlow offers high-quality catalytic converters engineered for 2011 BMW 328i sub-models and engine sizes. We combine efficient design and state-of-the-art manufacturing to meet or exceed required emissions standards. Select your 2011 BMW 328i requirements and state vehicle registration to buy the best 328i catalytic converter online that fits your '11 328i and meets your state’s emissions compliance.
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Performance Exhaust Systems
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Check out our how-to-guide to help you find the best Catalytic Converter for your vehicle and local emissions requirements.
Direct-Fit, Universal, Manifold, and CARB Compliant - Find out what type of Catalytic Converter will fit your needs.
Find out how to choose the correct catalytic converter for your 2011 BMW 328i to comply with your state emissions regulations.
