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Are you looking for more from your car? Maybe you need a little extra punch from the motor, more miles-per-gallon, or maybe you’re seeing a pesky “Check Engine” light because of a failed catalytic converter.

Whatever your exhaust needs are, MagnaFlow offers a comprehensive line of emissions and performance exhaust components and systems. With nearly forty years of manufacturing experience in the US, MagnaFlow’s engineers have developed both universal-fit and application-specific direct-fit catalytic converters and performance exhaust systems. MagnaFlow’s emissions products meet or exceed all necessary requirements for EPA and CARB, and their performance products give you extra performance and efficiency that won’t violate your factory warranty. It’s a worry-free experience, thanks to their limited lifetime warranty.

Trust MagnaFlow to keep your vehicle running like it should, and when “as good as stock” just isn’t enough, upgrade to MagnaFlow. Check out their full selection online or at your local O’Reilly Auto Parts store.

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Catalytic Converter

Catalytic Converter
Performance Exhaust

Performance Exhaust
Magnaflow

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20% OFF $125+ WITH PROMO CODE: GREEN20, Online Only

20% OFF $125+ WITH PROMO CODE: GREEN20, Online Only

Get 20% off $125 with promo code GREEN20. Online, ship to home only. 04/23/26 – 04/27/26. *Maximum discount $50.

20% off $125+: Valid on regularly priced in-stock items for Ship to Home orders that when purchased together total $125 or more (before tax, shipping and discount) on the website only. Excludes AIRAID, B&M, Bully Dog, DeVilbiss, Edelbrock, Flowmaster, Holley, Hurst, Ingersoll-Rand, K&N, MSD, SCT, and Spectre items.

To Redeem Offer: Add qualifying items totaling $125 or more to your shopping cart and select “Ship” as your delivery method. Enter promo code GREEN20 in the cart. The total in your shopping cart will be adjusted after promo code is applied. Excluded brands contribute toward minimum purchase amount to qualify for offer but are not eligible for discount. (Maximum $50.00 Discount.) Valid Thursday, April 23rd to Monday, April 27th, 2026 (11:59pm Hawaii Time Zone). Coupon code is not redeemable for cash, is nontransferable and cannot be replaced if lost or stolen. Not valid on same-day delivery orders. Void if copied, transferred or where prohibited by law. Customer pays sales tax and shipping fees.

Offer subject to adjustment due to returns, cancellations and exchanges. Additional taxes and duties may apply. Not valid with any other promotional gift with purchase. Offer may be modified or discontinued at any time without notice.

Offer Terms: Offer does not apply to gift card orders. Offer does not apply to Lead-Acid batteries. Cannot be used in combination with any other certificates, offers, or discounts or for payment on account. Not valid on previous purchases or store purchases. Shipping & handling and taxes do not qualify towards the minimum purchase. Valid for retail customers only. OReillyAuto.com only ships orders within the U.S.

Excluded Brands: Offer does not apply to AIRAID, B&M, Bully Dog, DeVilbiss, Edelbrock, Flowmaster, Holley, Hurst, Ingersoll-Rand, K&N, MSD, SCT, and Spectre items.


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How to Select the Correct Catalytic Converter – Federal
How to Select the Correct Catalytic Converter – Maine
How to Select the Correct Catalytic Converter - New York
MagnaFlow offers a full selection of catalytic converters, performance exhaust and emissions products. Whether you’re looking for MagnaFlow exhaust, a MagnaFlow muffler, or a MagnaFlow catalytic converter, the Parts Professionals at O’Reilly Auto Parts can help you find the exact parts to fit your vehicle, as well as the tools you may need to get the job done right the first time. Let O’Reilly Auto Parts or OReillyAuto.com be your one stop next time you need a replacement or upgrade for your vehicle’s emissions.
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