# High Flow Racing Catalytic Converter, B5 & B6 Audi A4 1.8T 034Motorsport > 034Motorsport downpipe (part no. 034-105-4021) for Audi A4 B5/B6 and VW Passat B5, 1.8 Turbo. Stainless steel, 3 inch tubing, mounting hardware included. - **Reference** : 034-105-4021 - **Brand** : 034 Motorsport - **Price** : 763.14 EUR incl. VAT - **Availability** : Backorder, ships from 2026-11-23 - **Delivery to mainland France** : 0.00 EUR, ships within 7 to 7 business day(s), transit 1 to 2 business day(s) - **URL** : https://dynaparts.fr/en/034motorsport-exhausts/221266-high-flow-racing-catalytic-converter-b5-b6-audi-a4-18t-034motorsport.html ![High Flow Racing Catalytic Converter, B5 & B6 Audi A4 1.8T 034Motorsport](https://dynaparts.fr/437124-large_default/high-flow-racing-catalytic-converter-b5-b6-audi-a4-18t-034motorsport.jpg) **Check compatibility** with your vehicle Choose my vehicle 034Motorsport High Performance Sport Catalyst for Audi A4 & Volkswagen Passat ![034 Motorsport](https://dynaparts.fr/img/m/125.jpg) [Brand 034 Motorsport](https://dynaparts.fr/en/125_034-motorsport) Reference 034-105-4021 Rating: (0) 763,14 € tax incl. ? Available from the manufacturer 1 in stock at factory 1. Order today 2. Preparation at the manufacturer 3. Delivery Wed 25 Nov Estimated delivery to you on 25/11/2026 This lead time is an estimate and may change due to circumstances beyond our control This product is eligible for FREE SHIPPING!\* With this product: 763,14 € Free delivery unlocked Delivery country Postcode (optional) 034-105-4021 - 034Motorsport Downpipe for Audi A4 & Volkswagen Passat Improve the performance of your **Audi A4** or **Volkswagen Passat** with the **034Motorsport High Performance Sport Catalyst**. Designed to replace the restrictive stock catalytic converter, this sport catalytic converter provides faster revving while increasing horsepower and torque throughout the entire RPM range. ## Product Features - **Material:** Stainless Steel - **Oxygen Sensors:** Stock Sensor Locations - **Diameter:** 3-inch Tubing - **Installation:** Complete Kit with Mounting Hardware Included ## Vehicle Compatibility - **Audi A4 B5 1.8T** (1997 - 2001) - **Audi A4 B6 1.8T** (2002 - 2005) - **Volkswagen Passat B5/B5.5 1.8T** (1997 - 2005) ## Benefits This **Sports Catalytic Converter** is designed to provide a significant improvement in the performance of your vehicle. Thanks to its stainless steel construction and TIG welding, it ensures optimum durability and strength. The power and torque gains are dyno-tested, guaranteeing a noticeable improvement in throttle response and overall engine performance. ## Installation The **034Motorsport High Performance Sports Catalytic Converter** is a complete upgrade that fits directly onto the original or compatible exhaust systems and turbos. It is suitable for both manual and automatic transmissions, including 4Motion/Quattro and FWD models. ***Note:* This product is intended for competition use and is not approved for use on the open road.** - **Product Range :** Exhausts - **Exhaust** Downpipe + Sport Catalyst - **Filter part type** Exhaust: Downpipe Only - **Engine:** 1.8 Turbo (190 hp) - **Engine:** 1.8 Turbo (150 hp) - **Engine:** 1.8 Turbo (163 hp) - **Engine:** 1.8 20V Turbo (130 hp) - **Engine:** 1.8 Turbo (180 hp) - **Make:** VOLKSWAGEN - **Make:** AUDI - **Make:** VW - **Model:** A4 B6 Avant (8E) (12/2000 - 12/2004) - **Model:** A4 Quattro B5 Avant (8D) (11/1994 - 11/2000) - **Model:** A4 Quattro B6 Avant (8E) (12/2000 - 12/2004) - **Model:** A4 B5 (8D) (11/1994 - 11/2000) - **Model:** A4 Quattro B6 Cabriolet (8E) (12/2000 - 12/2004) - **Model:** A4 B6 (8E) (12/2000 - 12/2004) - **Model:** Passat B5 Variant (3BG) (10/2000 - 05/2005) - **Model:** A4 Quattro B5 (8D) (11/1994 - 11/2000) - **Model:** A4 Quattro B6 (8E) (12/2000 - 12/2004) - **Model:** A4 B6 Cabriolet (8E) (12/2000 - 12/2004) - **Model:** A4 B5 Avant (8D) (11/1994 - 11/2000) - **Model:** Passat B5 (3BG) (10/2000 - 05/2005) Compatible vehicles (35) AUDI (17) ▼ | Model | Engine | Fuel | Displacement | Power | Years | | --- | --- | --- | --- | --- | --- | | A4 B5 (8D2) (11/1994 - 09/2001) | 1.8 (115 cv) | essence | - | 115 hp | - | | A4 B5 (8D2) (11/1994 - 09/2001) | 1.8 (125 cv) | essence | - | 125 hp | - | | A4 B5 (8D2) (11/1994 - 09/2001) | 1.8 T (150 cv) | essence | - | 150 hp | - | | A4 B5 (8D2) (11/1994 - 09/2001) | 1.8 T (180 cv) | essence | - | 180 hp | - | | A4 B5 Avant (8D5) (11/1994 - 09/2001) | 1.8 (115 cv) | essence | - | 115 hp | - | | A4 B5 Avant (8D5) (11/1994 - 09/2001) | 1.8 (125 cv) | essence | - | 125 hp | - | | A4 B5 Avant (8D5) (11/1994 - 09/2001) | 1.8 T (150 cv) | essence | - | 150 hp | - | | A4 B5 Avant (8D5) (11/1994 - 09/2001) | 1.8 T (180 cv) | essence | - | 180 hp | - | | A4 B6 (8E2) (11/2000 - 12/2004) | 1.8 T (150 cv) | essence | - | 150 hp | - | | A4 B6 (8E2) (11/2000 - 12/2004) | 1.8 T (163 cv) | essence | - | 163 hp | - | | A4 B6 (8E2) (11/2000 - 12/2004) | 1.8 T (170 cv) | essence | - | 170 hp | - | | A4 B6 (8E2) (11/2000 - 12/2004) | 1.8 T (190 cv) | essence | - | 190 hp | - | | A4 B6 Avant (8E5) (04/2001 - 12/2004) | 1.8 T (150 cv) | essence | - | 150 hp | - | | A4 B6 Avant (8E5) (04/2001 - 12/2004) | 1.8 T (163 cv) | essence | - | 163 hp | - | | A4 B6 Avant (8E5) (04/2001 - 12/2004) | 1.8 T (190 cv) | essence | - | 190 hp | - | | A4 B6 Décapotable (8H7) (04/2002 - 12/2005) | 1.8 T (163 cv) | essence | - | 163 hp | - | | A4 B6 Décapotable (8H7) (04/2002 - 12/2005) | 1.8 T (170 cv) | essence | - | 170 hp | - | VW (18) ▼ | Model | Engine | Fuel | Displacement | Power | Years | | --- | --- | --- | --- | --- | --- | | Passat B5 (3B2) (08/1996 - 11/2000) | 1.8 (115 cv) | essence | - | 115 hp | - | | Passat B5 (3B2) (08/1996 - 11/2000) | 1.8 (125 cv) | essence | - | 125 hp | - | | Passat B5 (3B2) (08/1996 - 11/2000) | 1.8 / Syncro 4-motion (125 cv) | essence | - | 125 hp | - | | Passat B5 (3B2) (08/1996 - 11/2000) | 1.8 Syncro/4motion (125 cv) | essence | - | 125 hp | - | | Passat B5 (3B2) (08/1996 - 11/2000) | 1.8 T (150 cv) | essence | - | 150 hp | - | | Passat B5 Variant (3B5) (05/1997 - 11/2000) | 1.8 (115 cv) | essence | - | 115 hp | - | | Passat B5 Variant (3B5) (05/1997 - 11/2000) | 1.8 (125 cv) | essence | - | 125 hp | - | | Passat B5 Variant (3B5) (05/1997 - 11/2000) | 1.8 / Syncro 4-motion (125 cv) | essence | - | 125 hp | - | | Passat B5 Variant (3B5) (05/1997 - 11/2000) | 1.8 Syncro/4motion (125 cv) | essence | - | 125 hp | - | | Passat B5 Variant (3B5) (05/1997 - 11/2000) | 1.8 T (150 cv) | essence | - | 150 hp | - | | Passat B5.5 (3B3) (10/2000 - 11/2005) | 1.8 20V Turbo (130 cv) | - | - | 130 hp | - | | Passat B5.5 (3B3) (10/2000 - 11/2005) | 1.8 T (170 cv) | essence | - | 170 hp | - | | Passat B5.5 (3B3) (10/2000 - 11/2005) | 1.8 T 20V (150 cv) | essence | - | 150 hp | - | | Passat B5.5 (3B3) (10/2000 - 11/2005) | 1.8 T 4motion (170 cv) | essence | - | 170 hp | - | | Passat B5.5 Variant (3B6) (10/2000 - 08/2005) | 1.8 20V Turbo (130 cv) | - | - | 130 hp | - | | Passat B5.5 Variant (3B6) (10/2000 - 08/2005) | 1.8 4motion (170 cv) | essence | - | 170 hp | - | | Passat B5.5 Variant (3B6) (10/2000 - 08/2005) | 1.8 T (170 cv) | essence | - | 170 hp | - | | Passat B5.5 Variant (3B6) (10/2000 - 08/2005) | 1.8 T 20V (150 cv) | essence | - | 150 hp | - | #### Related Products ![034 Motorsport](https://dynaparts.fr/img/m/125-fabricant.png) Ref: 034-105-7054 Available from the manufacturer (6) → 25/11/2026 ### [Res-X 034 motorsport pour B9 SQ5](https://dynaparts.fr/en/034motorsport-exhausts/227686-res-x-034-motorsport-pour-b9-sq5.html) Res-X & X-Pipe Resonator Delete 034Motorsport - Audi SQ5 (B9/B9.5) 737,38 € Rating: (0) ![034 Motorsport](https://dynaparts.fr/img/m/125-fabricant.png) Ref: 034-105-7056 Available from the manufacturer (24+) → 25/11/2026 ### [Res-X Resonator Delete 034Motorsport for Audi RS5 B9/B9.5 2.9 TFSI](https://dynaparts.fr/en/034motorsport-exhausts/221730-res-x-resonator-delete-034motorsport-for-audi-rs5-b9-b95-29-tfsi.html) 637,56 € Rating: (0) ![034 Motorsport](https://dynaparts.fr/img/m/125-fabricant.png) Ref: 034-105-4053 Available from the manufacturer (2) → 25/11/2026 ### [034Motorsport stainless steel racing exhaust pipe for Golf GTI Mk8](https://dynaparts.fr/en/034motorsport-exhausts/227616-034motorsport-stainless-steel-racing-exhaust-pipe-for-golf-gti-mk8.html) 034Motorsport Stainless Steel Racing Downpipe - 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