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USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 23 - Jul 28
For Your Every Summer RSVP, with Code: SUMMER15
Description
04-06 BMW X3 3.0L Manifold Direct-Fit Catalytic Converter 51816 MagnaflowKeep the check engine light off with MagnaFlow OEM Grade Federal EPA Compliant Direct Fit Catalytic Converter 51816. With features including free flowing mandrel bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state of the art metrology department uses the latest 3D scanning systems during research and
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51816. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. Designed to fit the 2004-2006 BMW X3 and 2001-2005 BMW 330xi, this direct-fit catalytic converter also interchanges with OE parts 18 40 7 514 504 and 18 40 7 508 760. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Perfect fit
Great quality filters, both fit snug
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Great price
2018 Honda Civic EXL Turbo great fit, great price!
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Reviewed in the United States on March 15, 2026
★★★★★ 4
Good fit.
Good fit.
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Reviewed in the United States on October 29, 2025
★★★★★ 5
Great product!
I have a 2022 CRV and these filters are great quality, they fit perfectly and are better than the factory brand with a much better price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
★★★★★ 5
Price and quality.
Perfect! Saves you money over dealership! Simple to install! Quick and easy!
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Reviewed in the United States on January 18, 2026
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