2014-2024 Audi / Volkswagen Tunnel Reinforcement Bracket Front 5Q0804421B
OEM Part #: 5Q0-804-421-B (5Q0804421B)
Actual photo
The exact part you’ll receive — not a stock photo.
$28.59
Side: Front
Used
Donor2019 Volkswagen TIGUAN · 2.0L · 75k miles
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Genuine OEM Used
SKU: 694911
Donor Vehicle: 2019 Volkswagen TIGUAN · 2.0L · 75k miles
2 photos
$28.59
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Used Volkswagen/Audi OEM tunnel reinforcement bracket, part number 5Q0804421B (also replaces 5Q0804421A). This is a genuine used part from a donor vehicle. This front tunnel reinforcement bracket provides structural support to the vehicle's underbody. A common failure symptom is a loose or rattling sensation in the floorpan area, which this bracket helps to prevent.
Specifications
| Fits Vehicle Model | A3, A3 e-tron, Arteon, Atlas, Atlas Cross Sport, Golf, Golf Alltrack, Golf SportWagen, GTI, Jetta, Taos, Tiguan |
| Fits Vehicle Make | Audi, Volkswagen |
| OEM Part No | 5Q0-804-421-B (5Q0804421B) |
| Compatible OEM Part No | 5Q0-804-421-A |
| Side | Front |
| Category | Underbody |
Compatible Vehicles
Fits 91 vehicle configurations across 2 makes, 2014-2024.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 91 vehicle configurations — 7 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2024 | Audi | A3 | Sedan | 2.0L l4 Turbo | |
| 2024 | Volkswagen | Jetta | Sedan | 1.5L l4 Turbo | |
| 2024 | Volkswagen | Tiguan | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 07/26/21 |
| 2020 | Volkswagen | Arteon | Hatchback | 2.0L l4 Turbo | |
| 2021 | Volkswagen | Arteon | Hatchback | 2.0L l4 Turbo | |
| 2022 | Volkswagen | Tiguan | SUV | 2.0L l4 Turbo | For Vehicles with Production Date Between 07/26/21 and 09/20/21 |
| 2023 | Volkswagen | Atlas Cross Sport | SUV | 3.6L V6 | |
| 2021 | Volkswagen | Atlas Cross Sport | SUV | 2.0L l4 Turbo | |
| 2021 | Volkswagen | Golf | Hatchback | 1.4L l4 Turbo | |
| 2023 | Volkswagen | Taos | SUV | 1.5L l4 Turbo | |
| 2019 | Volkswagen | Tiguan | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 09/20/21 |
| 2023 | Volkswagen | Tiguan | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 07/26/21 |
| 2024 | Volkswagen | GTI | Hatchback | 2.0L l4 Turbo | |
| 2020 | Volkswagen | Atlas Cross Sport | SUV | 3.6L V6 | |
| 2020 | Volkswagen | Atlas Cross Sport | SUV | 2.0L l4 Turbo | |
| 2022 | Volkswagen | Atlas Cross Sport | SUV | 3.6L V6 | |
| 2023 | Volkswagen | Arteon | Hatchback | 2.0L l4 Turbo | |
| 2024 | Volkswagen | Jetta | Sedan | 2.0L l4 Turbo | |
| 2022 | Volkswagen | Atlas Cross Sport | SUV | 2.0L l4 Turbo | |
| 2023 | Audi | A3 | Sedan | 2.0L l4 Turbo | |
| 2023 | Volkswagen | GTI | Hatchback | 2.0L l4 Turbo | |
| 2024 | Volkswagen | Atlas | SUV | 2.0L l4 Turbo | |
| 2022 | Audi | A3 | Sedan | 2.0L l4 Turbo | |
| 2024 | Volkswagen | Taos | SUV | 1.5L l4 Turbo | |
| 2021 | Volkswagen | Atlas Cross Sport | SUV | 3.6L V6 | |
| 2021 | Volkswagen | Jetta | Sedan | 2.0L l4 Turbo | |
| 2017 | Volkswagen | Golf SportWagen | Wagon | 1.8L l4 Turbo | |
| 2018 | Volkswagen | Golf SportWagen | Wagon | 1.8L l4 Turbo | |
| 2019 | Volkswagen | Golf SportWagen | Wagon | 1.8L l4 Turbo | |
| 2019 | Volkswagen | Golf SportWagen | Wagon | 1.4L l4 Turbo | |
| 2019 | Volkswagen | Arteon | Hatchback | 2.0L l4 Turbo | |
| 2015 | Volkswagen | Golf SportWagen | Wagon | 2.0L l4 Diesel Turbo | |
| 2015 | Volkswagen | Golf SportWagen | Wagon | 1.8L l4 Turbo | |
| 2016 | Volkswagen | Golf SportWagen | Wagon | 1.8L l4 Turbo | |
| 2021 | Volkswagen | Jetta | Sedan | 1.4L l4 Turbo | |
| 2022 | Volkswagen | GTI | Hatchback | 2.0L l4 Turbo | |
| 2022 | Volkswagen | Jetta | Sedan | 2.0L l4 Turbo | |
| 2022 | Volkswagen | Arteon | Hatchback | 2.0L l4 Turbo | |
| 2023 | Volkswagen | Atlas Cross Sport | SUV | 2.0L l4 Turbo | |
| 2024 | Volkswagen | Atlas Cross Sport | SUV | 2.0L l4 Turbo | |
| 2023 | Volkswagen | Jetta | Sedan | 2.0L l4 Turbo | |
| 2023 | Volkswagen | Jetta | Sedan | 1.5L l4 Turbo | |
| 2022 | Volkswagen | Jetta | Sedan | 1.5L l4 Turbo | |
| 2019 | Volkswagen | Atlas | SUV | 3.6L V6 | |
| 2020 | Volkswagen | Tiguan | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 09/20/21 |
| 2021 | Volkswagen | Tiguan | SUV | 2.0L l4 Turbo | For Vehicles with Production Date Between 07/26/21 and 09/20/21 |
| 2017 | Volkswagen | GTI | Hatchback | 2.0L l4 Turbo | |
| 2019 | Audi | A3 | Sedan | 2.0L l4 Turbo | |
| 2019 | Volkswagen | Jetta | Sedan | 2.0L l4 Turbo | |
| 2020 | Volkswagen | Atlas | SUV | 2.0L l4 Turbo | |
| 2022 | Volkswagen | Taos | SUV | 1.5L l4 Turbo | |
| 2020 | Volkswagen | Jetta | Sedan | 1.4L l4 Turbo | |
| 2020 | Volkswagen | Jetta | Sedan | 2.0L l4 Turbo | |
| 2020 | Volkswagen | GTI | Hatchback | 2.0L l4 Turbo | |
| 2017 | Audi | A3 | Sedan | 2.0L l4 Turbo | |
| 2019 | Volkswagen | Golf Alltrack | Wagon | 1.8L l4 Turbo | |
| 2019 | Volkswagen | Atlas | SUV | 2.0L l4 Turbo | |
| 2019 | Audi | A3 | Convertible | 2.0L l4 Turbo | |
| 2019 | Volkswagen | GTI | Hatchback | 2.0L l4 Turbo | |
| 2019 | Volkswagen | Jetta | Sedan | 1.4L l4 Turbo | |
| 2019 | Volkswagen | Golf | Hatchback | 1.4L l4 Turbo | |
| 2017 | Audi | A3 | Convertible | 2.0L l4 Turbo | |
| 2020 | Volkswagen | Atlas | SUV | 3.6L V6 | |
| 2020 | Audi | A3 | Sedan | 2.0L l4 Turbo | |
| 2020 | Volkswagen | Golf | Hatchback | 1.4L l4 Turbo | |
| 2016 | Audi | A3 | Convertible | 1.8L l4 Turbo | |
| 2016 | Audi | A3 | Sedan | 2.0L l4 Diesel Turbo | |
| 2016 | Audi | A3 | Sedan | 1.8L l4 Turbo | |
| 2015 | Volkswagen | GTI | Hatchback | 2.0L l4 Turbo | |
| 2016 | Volkswagen | Golf | Hatchback | 1.8L l4 Turbo | |
| 2016 | Volkswagen | GTI | Hatchback | 2.0L l4 Turbo | |
| 2015 | Audi | A3 | Convertible | 1.8L l4 Turbo | |
| 2015 | Volkswagen | Golf | Hatchback | 2.0L l4 Diesel Turbo | |
| 2015 | Audi | A3 | Sedan | 2.0L l4 Diesel Turbo | |
| 2015 | Audi | A3 | Sedan | 1.8L l4 Turbo | |
| 2014 | Volkswagen | Golf | Hatchback | 2.5L l5 | |
| 2014 | Volkswagen | Golf | Hatchback | 2.0L l4 Diesel Turbo | |
| 2015 | Volkswagen | Golf | Hatchback | 1.8L l4 Turbo | |
| 2018 | Volkswagen | Atlas | SUV | 3.6L V6 | |
| 2018 | Volkswagen | Atlas | SUV | 2.0L l4 Turbo | |
| 2018 | Volkswagen | Tiguan | SUV | 2.0L l4 Turbo | For Vehicles With Production date Up To 09/20/21 |
| 2018 | Audi | A3 | Convertible | 2.0L l4 Turbo | |
| 2018 | Audi | A3 | Sedan | 2.0L l4 Turbo | |
| 2018 | Volkswagen | GTI | Hatchback | 2.0L l4 Turbo | |
| 2018 | Volkswagen | Golf Alltrack | Wagon | 1.8L l4 Turbo | |
| 2018 | Volkswagen | Golf | Hatchback | 1.8L l4 Turbo | |
| 2017 | Volkswagen | Golf Alltrack | Wagon | 1.8L l4 Turbo | |
| 2017 | Volkswagen | Golf | Hatchback | 1.8L l4 Turbo | |
| 2018 | Audi | A3 e-tron | Hatchback | 1.4L l4 Turbo | |
| 2016 | Audi | A3 e-tron | Hatchback | 1.4L l4 Turbo | |
| 2017 | Audi | A3 e-tron | Hatchback | 1.4L l4 Turbo |