bmw 320i catalytic converter price – Ultimate Guide & Top Deals
BMW 320i Catalytic Converter Price & Complete Buyer’s Guide
If you’re researching the BMW 320i catalytic converter price, you already know a failing catalyst isn’t something you can ignore. A malfunctioning converter can trigger your check-engine light, fail emissions inspections, and even harm your engine. This 3,000-word guide covers everything you need to know—from current UK market prices to expert installation tips—so you can make an informed decision and keep your 320i running clean. For a wider look at emissions technology across multiple marques, explore our best catalytic converter suppliers in the UK roundup.
About Catman: Your Trusted Global Supplier
Catman are worldwide suppliers of OE-quality Catalytic Converters, Diesel Particulate Filters (DPF filters), and complete Exhaust Systems. Based in the UK, Catman pride themselves on high-quality service, rapid delivery, and exceptional value for money. Every product is sourced only from long-established manufacturers and includes a minimum 12-month guarantee. Learn more about our history and manufacturing standards on the About Catman page. For personalised assistance, call 01489 666 468, 01489 666 384, or 0207 1019 387, or email info@catman.co.uk.
Why the Catalytic Converter Matters
- Emission Control: Converts harmful NOx, CO, and HC into less toxic gases; discover the science behind these reactions in the EPA’s catalyst overview.
- Legal Compliance: UK MOT tests demand an efficient catalyst; see current catalytic-converter laws for details.
- Performance & Fuel Economy: A clogged converter can increase backpressure, reducing power and mpg.
Main Factors Influencing BMW 320i Catalytic Converter Price
- Vehicle Generation: E46, E90/91/92/93, F30 models use different designs.
- Type of Converter: Manifold-integrated vs. underfloor catalysts.
- Ceramic vs. Metallic Substrates: Metallic cores cost more but flow better; see a technical comparison at ShiftThrill’s emissions control guide.
- Certification & Warranty: Type-approved units carry higher upfront costs but ensure MOT compliance.
- Raw Material Prices: Platinum, palladium, and rhodium markets fluctuate.
Current UK Market Snapshot (2025)
Below is a realistic price range for replacement catalytic converters (parts only) specifically for BMW 320i variants. For budget-friendly alternatives across other brands, visit our affordable catalytic converters section.
| Model / Chassis | Engine Code | Typical Price (£) | Warranty |
|---|---|---|---|
| E46 320i 1998-2005 | M54B22 / M52TUB20 | 250–320 | 12 months |
| E90/E91 320i 2005-2012 | N43B20 / N46B20 | 320–420 | 24 months |
| F30/F31 320i 2012-2019 | N20B20 / B48B20 | 380–550 | 24 months |
Labour in the UK typically ranges from £150–£300 depending on workshop rates, meaning a full supply-and-fit service could total between £400 and £850. To get an exact quote, use our quick order request form.
How Catman Keeps Your BMW 320i Running Clean
Catman offers multiple converter options:
- OE-Standard Direct-Fit Converters: Plug-and-play units matching BMW flange patterns.
- High-Flow Sports Cats: Metallic 200-CPSI substrates for performance enthusiasts seeking lower backpressure.
- Budget-Friendly Type-Approved Replacements: Reliable ceramic units that meet MOT limits without breaking the bank.
For a deep dive into how DPFs and cats differ, read the comparative guide over at SkyEmission.
Every Catman converter is bench-flow tested and supplied with fitting kits—gaskets, bolts, and clamps—so there are no hidden extras. If you own additional models like an X3, check our dedicated BMW X3 catalytic converter guide.
Signs Your BMW 320i Catalytic Converter May Need Replacement
- Persistent P0420 or P0430 OBD-II codes.
- Egg-like sulphur smell from exhaust.
- Sluggish acceleration and reduced top-end power.
- Rattling noise due to broken substrate.
- Failed MOT emissions test.
Step-by-Step Replacement Guide
Note: DIY replacement is only recommended for experienced enthusiasts with the correct tools and safe lifting equipment.
- Disconnect the battery to avoid accidental short circuits.
- Raise the vehicle on axle stands, ensuring stability.
- Unbolt the oxygen sensors (label their positions).
- Remove flange bolts and exhaust hangers to free the old cat.
- Inspect gaskets and replace if needed (Catman kits include them).
- Install the new converter, torquing bolts to BMW specs.
- Reinstall O2 sensors and reconnect the battery.
- Clear stored fault codes and perform a road test.
Frequently Asked Questions (FAQ)
1. Does installing a Catman converter void my BMW warranty?
No. Catman supplies type-approved catalysts that meet or exceed OE standards, preserving your statutory rights.
2. Can I upgrade to a sports cat without remapping?
Yes, Catman high-flow converters are designed for plug-and-play fitment. However, an ECU tune can maximise gains.
3. What is the difference between Euro 4 and Euro 5 converters?
Euro 5 units contain higher precious-metal loading and tighter cell structures, improving conversion efficiency. If you’re unsure which standard your BMW meets, our replacement catalytic converter guide breaks down UK emissions classes, or consult the technical brief at Autocatalyst Market.
Environmental & Legal Considerations
UK regulations now prohibit selling scrap catalytic converters without traceability, so always purchase from reputable suppliers like Catman. Proper recycling of your old cat ensures recovery of platinum-group metals and reduces environmental impact. For details on eco-friendly disposal, consult our DPF and catalyst recycling programme and review best practices outlined by the International Council on Clean Transportation.
Maintenance Tips to Extend Converter Life
- Use quality unleaded fuel to minimise sulphur contamination.
- Fix misfires promptly—raw fuel can melt the substrate.
- Perform regular oil changes to prevent oil-burning deposits.
- Avoid short trips; allow the converter to reach operating temperature.
Customer Success Story
James P. from Manchester noticed sluggish performance on his 2009 BMW 320i. After a quick diagnostic, Catman supplied a direct-fit Euro 5 converter. “Delivery was next-day, price was unbeatable, and my 320i passed MOT with flying colours,” he reports. Read more feedback on our customer testimonials page.
Ready to Order?
Call Catman today on 01489 666 468 or 0207 1019 387. Alternatively, email info@catman.co.uk with your BMW VIN for a same-day quote, or place an online order. Your new converter ships worldwide, fully insured, usually within 24 hours.
Conclusion
Understanding the BMW 320i catalytic converter price landscape empowers you to choose wisely. With Catman’s extensive inventory, robust guarantees, and expert support, restoring your 320i’s performance and emissions compliance has never been easier or more cost-effective. For other makes—whether you drive a Toyota, Ford, or Audi—browse our full Catalytic Converter catalogue to find the perfect fit.
