The CTS Turbo High-Flow Cat for the BMW B58 is made to maximize exhaust flow for the highest power gains. Do not compromise performance and sound with factory parts – unleash your BMW’s potential!
Designed using the latest in CAD technology; this part is made to fit perfectly in place of your factory downpipe. Manufactured from T304 stainless steel, hand TIG welded and back-purged to ensure years of reliable performance.
Product Details:
Precisely designed and tested on a real car in the real world
T304 stainless steel, TIG welded back-purged construction
Replaces restrictive factory downpipe with high-flow 200cell catalytic converter
Great power upgrade with uncompromising performance
Incredible sporty exhaust sound, subtle when cruising
No drone with factory exhaust
We recommend replacing the downpipe gasket when installing, factory BMW gasket 18328612538 is required (not included).
Catalytic converters damaged by "crackle tune" are not covered under warranty.
2016+ F20 BMW M140i
2016+ F22 BMW M240i & M240i xDrive
2016+ F30/F31/G20 BMW 340i & 340i xDrive
2016+ F32/F33/F36/G22/G23/G26 BMW 440i & 440i xDrive
2016+ G30/G31 BMW 540i & 540i xDrive
2016+ G11/G12 BMW 740i & 740i xDrive
2018+ G01 BMW X3 M40i xDrive
2018+ G01 BMW X4 M40i xDrive
2019+ G01 BMW X5 40i xDrive
Stage 2 software is required to avoid check engine light. Only fits cars without GPF/OPF.
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⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
The AutoHouse Advantage: Global sourcing power paired with specialized expertise. We utilize an expansive supply network of over 600,000 SKUs to deliver world-class components with an enthusiast’s precision.
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• AH630 — $630 OFF $9000+
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Avoid the headache of the wrong part. If you are unsure about compatibility, contact us first. If we verify the fitment for your vehicle via email and it doesn’t fit, we will handle the exchange at no cost to you.
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We offer FREE Ground Shipping within the 48 contiguous United States. Most in-stock orders process within 48 hours. For your security, high-value performance parts require a signature upon delivery to ensure they reach you safely.
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Please inspect your order immediately. Damage must be reported within 48 hours. For freight/LTL items, if you cannot inspect the contents immediately, please write "Subject to Inspection" on the delivery receipt before signing.
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Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
Exclusions:
To ensure every customer receives brand-new, untampered components, parts that have been installed, modified, or used are non-returnable. Custom builds, special orders, and wheel/tire packages are considered final sale.
Need assistance? Reach out via our Contact Form before shipping any items back so we can provide you with an RMA number.
Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.
Verify Your Build:
If this product doesn't list your specific vehicle data, simply reach out to support@autohousesupply.com. We will manually verify compatibility for you.
Our Promise:
When we confirm a fitment in writing and it doesn’t work for your application, we cover the return shipping and exchange it at no cost to you.
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