OEM Front Catalytic Converter for 2012-2018 BMW 228i, 320i, 328i, 428i, 528i, X1, X3, X4, X5, Z4

What to look for when buying:

• Compatibility: Make sure the part is designed for your specific year, make, and model of car.
• Warranty: Look for a part with a warranty. This protects you if the part fails soon after installation.
• Condition: Consider whether you want a used, refurbished, or new part.

Quality indicators:

• OEM vs. Aftermarket: OEM (Original Equipment Manufacturer) parts are made by the same company that made the original part for your car. Aftermarket parts are made by other companies.
• Construction Materials: Look for parts made with high-quality materials that can withstand high temperatures.
• Testing and Inspection: Check if the part has been tested and inspected to ensure it meets quality standards.

What's typically included:

• The catalytic converter itself.
• Sometimes, new gaskets and hardware are included. Check the product description to see what's included.

Difficulty level:

• Intermediate. This job requires some mechanical knowledge and experience.

Estimated time:

• 2-4 hours.

Special tools needed:

• Socket set
• Wrench set
• Jack and jack stands
• Oxygen sensor wrench (optional)
• Penetrating oil

Critical steps and tips:

1. Disconnect the negative battery cable.
2. Spray penetrating oil on the bolts holding the catalytic converter in place. Let it soak for a while.
3. Remove the old catalytic converter.
4. Install the new catalytic converter, using new gaskets and hardware if provided.
5. Tighten all bolts to the correct torque specifications.
6. Reconnect the negative battery cable.

DIY or professional installation:

• If you have experience working on cars and are comfortable with the steps involved, you can try to install the catalytic converter yourself. However, if you're not confident, it's best to have a professional mechanic do the job.

• Used OEM: These are genuine factory parts that have been removed from other vehicles. They are tested and inspected to ensure they are in good working condition. Used OEM parts offer excellent value.
• Refurbished OEM: These are factory parts that have been professionally restored. They may have new components installed to bring them back to like-new condition.
• New Aftermarket: These are brand new parts made by third-party manufacturers. They are designed to meet or exceed OE specifications.

• Oxygen Sensors: Oxygen sensors monitor the exhaust gases and help the engine control system adjust the fuel mixture. They often fail around the same time as the catalytic converter.
• Exhaust Manifold Gaskets: These gaskets seal the connection between the exhaust manifold and the engine. Leaks can damage the catalytic converter.
• Exhaust Pipes: Damaged or rusted exhaust pipes can cause leaks and affect the performance of the catalytic converter.

Why replacing related parts prevents repeat failures:

• Replacing worn or damaged related parts can help prevent the new catalytic converter from failing prematurely. For example, replacing faulty oxygen sensors can ensure the engine is running efficiently and not damaging the catalytic converter.

• 8-10 years or 80,000-100,000 miles.

Factors that affect longevity:

• Driving Habits: Aggressive driving, such as frequent hard acceleration, can shorten the lifespan of the catalytic converter.
• Maintenance: Regular maintenance, such as oil changes and tune-ups, can help prolong the lifespan of the catalytic converter.
• Fuel Quality: Using high-quality fuel can help prevent damage to the catalytic converter.
• Engine Condition: A poorly running engine can damage the catalytic converter.

• Used OEM: $150 - $350
• Refurbished OEM: $250 - $450
• New Aftermarket: $300 - $600

Labor cost considerations:

• Labor costs for catalytic converter replacement typically range from $150 to $400, depending on the shop and the complexity of the job.

Total job cost estimates:

• Used OEM: $300 - $750
• Refurbished OEM: $400 - $850
• New Aftermarket: $450 - $1000

• These BMW models (2013-2017 X1, X3, X4) are known to sometimes have issues with oil leaks that can contaminate and damage the catalytic converter. Regular oil checks and addressing any leaks promptly are important.
• Some owners have reported issues with the oxygen sensors failing, which can lead to catalytic converter problems.

• Check Engine Light: Make sure the check engine light is off after installation. If it's still on, use an OBD-II scanner to check for any new error codes.
• Listen for Exhaust Leaks: Listen for any unusual noises coming from the exhaust system. Exhaust leaks can indicate a problem with the installation.
• Monitor Engine Performance: Pay attention to how the engine is running. It should be running smoothly and efficiently.

• Q: How do I know if my catalytic converter is bad?
• A: The most common sign is the check engine light coming on. You might also notice reduced engine performance, rattling noises, or a failed emissions test.

• Q: Can I drive with a bad catalytic converter?
• A: It's not recommended. A bad catalytic converter can damage your engine and reduce fuel efficiency. It can also cause you to fail an emissions test.

• Q: Will a new catalytic converter improve my gas mileage?
• A: Yes, if your old catalytic converter was clogged or damaged, a new one can improve your gas mileage.

• Q: How long does it take to replace a catalytic converter?
• A: It typically takes 2-4 hours to replace a catalytic converter.

• Q: Is it hard to replace a catalytic converter myself?
• A: It depends on your mechanical skills and experience. It's an intermediate-level job that requires some specialized tools. If you're not comfortable, it's best to have a professional mechanic do the job.

OEM Part Numbers:

• BMW: 18307607611, 18307627901, 18307629253, 18327646432

Fits Years: 2012 2013 2014 2015 2016 2017 2018