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BMW 318i Catalytic Converters
Catalytic converters for the BMW 318i span model years 1984–1999 and are available here in both universal and direct-fit styles from a range of established exhaust brands. Choose your model year above and this page keeps only the catalytic converters that fit your BMW 318i. Each listing is matched to our vehicle fitment data before it appears here.
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Magnaflow 418004 Universal Catalytic Converter 2.00 Inch Inlet/Outlet
Part: 418004
Vehicle Specific
$438.00
2 left at this price
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In Stock (10+)
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Magnaflow 94008 Universal Catalytic Converter 2.00 Inch Inlet/Outlet
Part: 94008
Universal Fit
$124.00
In Stock (10+)
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Magnaflow 408005 Universal Catalytic Converter 2.25 Inch Inlet Outlet
Part: 408005
Vehicle Specific
$317.00
1 left at this price
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Magnaflow 408004 Universal Catalytic Converter 2.00 Inch Inlet/Outlet
Part: 408004
Vehicle Specific
$298.00
In Stock (10+)
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Magnaflow 91075 Universal Catalytic Converter 2.25 Inch Inlet/Outlet
Part: 91075
Universal Fit
$104.00
In Stock (7)
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Magnaflow 454204 Universal Catalytic Converter 2.00 Inch Inlet/Outlet
Part: 454204
Vehicle Specific
$382.00
In Stock (10+)
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Magnaflow 93537 Universal Catalytic Converter - Dual 2.00in Inlet / 2.50in Outlet
Part: 93537
Universal Fit
$189.00
In Stock (10)
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Magnaflow 448306 Universal Catalytic Converter 2.5 Inch Inlet Outlet
Part: 448306
Vehicle Specific
$718.00
In Stock (10+)
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Magnaflow 418005 Universal Catalytic Converter 2.25 Inch Inlet/Outlet
Part: 418005
Vehicle Specific
$438.00
1 left at this price
What's here for your BMW 318i
- Direct-fit catalytic converters designed to match original mounting points and dimensions
- Universal catalytic converters offering flexible installation options
The widest selection here comes from Magnaflow, AP Exhaust, Walker Exhaust, and Catco — each a recognized name in exhaust system components. Other categories BMW 318i owners shop for: BMW 318i Exhaust Hardware, BMW 318i Emission Control Sensors and BMW 318i Shocks and Struts, or browse all BMW 318i parts and accessories.