2013-2015 Audi Q7 Diesel Exhaust Fluid / Def Return Line / Hose 4L0131912B
OEM Part #: 4L0-131-912-B (4L0131912B)
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The exact part you’ll receive — not a stock photo.
$117.99
Used
Donor2014 Audi Q7 · 3.0L
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Genuine OEM Used
SKU: 680514
Donor Vehicle: 2014 Audi Q7 · 3.0L
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$117.99
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A used genuine OEM Diesel Exhaust Fluid / DEF Return Line / Hose, part number 4L0131912B (also replaces 4L0131912), originally from a donor Audi Q7 with a 3.0L 2967cc V6 turbo-diesel. This hose returns excess DEF from the dosing module, preventing crystallization and maintaining proper system pressure. Common failures—cracks or blockages—trigger DEF system warnings or degradation of emissions control.
Specifications
| Fits Vehicle Model | Q7 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4L0-131-912-B (4L0131912B) |
| Compatible OEM Part No | 4L0-131-912 |
| Category | Fuel / Emissions |
Compatible Vehicles
Fits 3 vehicle configurations across 1 make, 2013-2015.
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 3 vehicle configurations — 3 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2015 | Audi | Q7 | SUV | 3.0L V6 Diesel Turbo | For Vehicles with Engine Code(s) CLZB, CNRB |
| 2013 | Audi | Q7 | SUV | 3.0L V6 Diesel Turbo | For Vehicles with Engine Code(s) CLZB, CNRB |
| 2014 | Audi | Q7 | SUV | 3.0L V6 Diesel Turbo | For Vehicles with Engine Code(s) CLZB, CNRB |