Volkswagen Polo Catalytic Converter

The function of a catalytic converter is to clean up your Polo's exhaust gases. Positioned between the manifold and tailpipe, it transforms toxic compounds into safer substances using a heat-activated catalyst.

This process helps meet Euro emissions regulations, minimizes environmental impact, and improves engine efficiency — especially critical in petrol-based models like the BUD or CBZB.

Watch for these symptoms of a faulty converter:

• Check engine light with fault code P0420
• Sulfur smell from the pipe
• Rattling from the rear section or exhaust manifold
• Reduced fuel economy or poor performance
• MOT test failure due to high emissions

Engines like CGGB, CGPB, AZQ, and BBM often show these issues as the catalyst degrades over time.

Prices vary by engine type and configuration. At Krosfou, prices start at £199.99 (ex. VAT), significantly more affordable than OEM alternatives from the dealership. Since we sell directly to the public, you avoid markup from third-party distributors.

Whether you're replacing a rear pipe model or a manifold-based cat, you'll find a quality product at a fair cost.

Krosfou.co.uk is your dedicated online store for high-performance catalytic converters. Unlike general auto parts websites, we provide:

• A selection based specifically on your engine type
• Product details and fitment information
• Quick delivery options and secure checkout
• Engine code lookup and data-based search filters
• Technical support to guide your purchase

Just add your chosen product to the basket, and we'll handle the rest.

Yes, if you're confident with tools and basic mechanics. Installation usually requires:

• Jack and axle stands
• Oxygen sensor wrench
• Socket and torque tools
• Anti-seize compound

Our kits come with everything you need — mounting hardware, gaskets, and a manual. Or you can take the converter to a trusted garage for professional fitting.

P0420 refers to "Catalyst System Efficiency Below Threshold." This often means your converter is no longer working efficiently, which can result from:

• A clogged or damaged catalyst
• Faulty upstream or downstream lambda sensors
• Leaks in the exhaust system that disrupt data readings

Run a full diagnostic before replacing your converter. In some cases, a sensor repair is all that's needed.

Yes, as long as they're type-approved under EEC regulations. This is required for any petrol car registered after 2001. All Krosfou converters are approved, fully road-legal, and designed to meet UK and Euro emissions standards.

They're heat-tested, durable, and compliant for MOT inspections.

Yes. Our range includes options for:

• Mk5 and Mk6 petrol models
• Engine codes like CHYC, DLAC, CBZB, BBM
• Classic and newer hatchback variants

We also support platform-sharing vehicles such as the Skoda Fabia, Audi A1, and SEAT Ibiza. Use our filters or contact us to select the correct part based on your engine type.

We also stock catalytic converters for diesel Polo models, including DPFs for TDI engines. If your car includes EGR equipment, we'll help match a compatible emissions system.

We can provide quotes for custom setups, fleet orders, or less common models like AUA and BME. Just reach out to our service team for advice.

Our kits include:

• The main catalytic converter unit
• Gaskets, bolts, and springs for mounting
• Lambda sensor ports for pre- and post-cat readings
• Optional brackets for rear or exhaust manifold placement

Each listing includes full details, fitment diagrams, and additional info to make installation easy.

Yes. All Krosfou converters come with a three-year warranty that covers:

• Manufacturing defects
• Substrate failure or welding issues
• Thread damage (when not caused by incorrect fitting)

We provide documents for MOT and insurance claims and honor our returns policy in full compliance with your rights.

Use the vehicle lookup tools on our website or follow these steps:

• Enter your Polo's registration
• Match your engine code (e.g., CGGB, BUD, APE)
• Select your fuel system and body type (e.g., petrol hatchback, diesel saloon)

Need help? Our customer service team can help you register the right product and ensure it fits your vehicle.

Most items are in stock and available for same-day shipping. Delivery within the UK typically takes 24–48 hours. You'll receive:

• Confirmation email with order summary
• Tracking number for real-time updates
• Optional weekend or express delivery services

We also ship to Ireland and European destinations. Contact us to learn more about delivery terms or international policies.

Our reviews consistently highlight:

• Easy website navigation and part selection
• Clear installation instructions
• Excellent service and support
• Fast and reliable delivery

After your purchase, you'll be invited to leave your own review to help others in the Krosfou community.

Yes. Many converters in our catalogue are also compatible with:

• VW Golf
• Audi A1
• SEAT Ibiza
• Tiguan
• Some Ford hatchbacks and light vans

Our store includes filters to help you sort by engine code, body type, and exhaust configuration. You can also search by part number or connection type.

Get in touch through live chat, phone, or our contact form. Whether you're replacing a part, searching for buying tips, or need help interpreting vehicle data, our team is ready to assist.

• Legal and MOT-ready with EEC Type Approval
• High-performance designs for petrol and diesel engines
• Great prices and ongoing deals
• Reliable delivery and secure purchase process
• Expert advice with fast response time
• Privacy policy and return terms clearly outlined
• Support for garages, trade accounts, and fleet servicing

Explore our VW Polo converter category and get your emissions system sorted today. Add to your basket and check out with confidence.