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

Direct fit on original or stock-fit turbo and exhaust, with gains of up to +26 hp at the wheel measured: direct replacement for the restrictive original catalytic converter.
Reference 034-105-4021
€686.83 (VAT incl.)
€763.14 -10%
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Temporarily unavailable
  1. Order today
  2. Manufacturing
  3. Delivery Tue 10 Nov
This product is out of stock at our supplier. Estimated delivery on 10/11/2026
This lead time is an estimate and may change due to circumstances beyond our control
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034Motorsport high-flow catalytic converters replace the restrictive original catalytic converter, allowing faster rev build-up and increased power and torque across the entire rev range.

  • Direct fit, bolts onto any original or stock-fit turbo and any original or stock-fit exhaust
  • Measured gains of up to +26 hp at the wheel
Product family Exhausts
Exhaust Downpipe + High-flow cat
Filter by part type Exhaust: Downpipe Only
Engine: 1.8 20V Turbo (130 hp) 1.8 Turbo (150 hp) 1.8 Turbo (163 hp) 1.8 Turbo (180 hp) 1.8 Turbo (190 hp)
Make: AUDI VOLKSWAGEN VW
Model: A4 B5 (8D) (11/1994 - 11/2000) A4 B5 Avant (8D) (11/1994 - 11/2000) A4 B6 (8E) (12/2000 - 12/2004) A4 B6 Avant (8E) (12/2000 - 12/2004) A4 B6 Cabriolet (8E) (12/2000 - 12/2004) A4 Quattro B5 (8D) (11/1994 - 11/2000) A4 Quattro B5 Avant (8D) (11/1994 - 11/2000) A4 Quattro B6 (8E) (12/2000 - 12/2004) A4 Quattro B6 Avant (8E) (12/2000 - 12/2004) A4 Quattro B6 Cabriolet (8E) (12/2000 - 12/2004) Passat B5 (3BG) (10/2000 - 05/2005) Passat B5 Variant (3BG) (10/2000 - 05/2005)

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