MagnaFlow Exhaust, Mufflers & Cat Converters - Quality

MagnaFlow 2009-2016 BMW Z4 3.0L OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 21-170

MagnaFlow 2009-2016 BMW Z4 3.0L OEM Grade Federal / EPA Compliant Direct-Fit - Main image
$842.06 $1186 In stock

Category: Catalytic Converter

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-170. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this 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 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. This Direct-Fit Catalytic Converter is designed to fit the 2009-2016 BMW Z4 3.0L. MagnaFlow 21-170 includes (1) Flange Gasket, (3) Flat Washers, (3) Bolts, (3) Nuts and interchanges with OE parts 18 30 7 586 741, 18 30 7 647 041. 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.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Leo O. ★★★★★

The flanges lined up perfectly with the existing mounts on my 2012 Z4, making installation straightforward even for a DIYer like me. After a hundred miles of mixed driving, the check engine light has stayed off and the exhaust note sounds just like the factory system.

Ruby H. ★★★★★

Installed this on my Z4 last weekend and the check engine light hasn't blinked once since. The mandrel-bent tubing made the swap straightforward, and the whole thing feels solidly built. Glad I went with the EPA-compliant option rather than cheaping out.

Kevin ★★★★★

My Z4 finally passed emissions after the swap—the fit was spot-on, and the corrosion-resistant finish looks solid underneath. The check engine light stayed off immediately, which was my main worry.