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High-Flow Motorsport Catalytic Converter 034Motorsport: Audi B5 and B6 A4 1.8T

Brand 034 Motorsport Reference 034-105-4021
High-flow motorsport catalytic converter, direct-fit replacement for the restrictive factory catalytic converter, compatible with factory or factory-type turbo and exhaust. Observed gains of up to +15 hp and +26 lb-ft at the wheel on stock turbo.
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Temporarily unavailable
This product is out of stock at our supplier. Estimated delivery on Nov 10, 2026
This lead time is an estimate and may change due to circumstances beyond our control

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High-flow motorsport catalytic converter, direct-fit replacement for the restrictive factory unit, allowing faster boost build-up and power and torque gains across the entire rev range.

  • Direct fit, compatible with any factory or factory-type turbo and exhaust
  • Observed gains of up to +15 hp and +26 lb-ft at the wheel on stock turbo

Compatibility: Audi A4 B5 and B6, 1.8T.

Sold for motorsport use / vehicles not street legal.

Information provided by the manufacturer and translated from American English. We recommend checking the technical specifications and compatibility on the manufacturer's website, as certain local specifications may apply to their products.

Filter by part type Exhaust: Downpipe Only
Product family: Exhausts
Exhaust Downpipe + High-flow cat
Produit mis à jour le: 2026-09-14 10:24:01