0444021021 AdBlue Urea Dosing Injector Valve for VW Crafter Passat Audi A4 2.0 TDI Euro 6
Tax calculated at checkout · USD · Free 60-day returns
- AST-DEF-0444021021-VAG
Match the number printed on your old part or in the vehicle service manual — not the part name.
What this part is
Buy replacement 0444021021 AdBlue Urea Dosing Injector Valve for VW Crafter Passat Audi A4 2.0 TDI Euro 6 (OE 0444021021). Verified fit for Volkswagen Crafter, Passat B8, Tiguan, Golf VII, Sharan, Audi A4 B8/B9, A6 C7, Q5 2.0 TDI Euro 6 EA288. 12-month warranty, 60-day returns, fast global dispatch. SKU: AST-DEF-0444021021-VAG.
0444021021 AdBlue Urea Dosing Injector Valve for VW Crafter Passat Audi A4 2.0 TDI Euro 6. High-reliability aftermarket replacement component from AutoSensor Tech. Tested and calibrated to meet or exceed OEM specifications for SCR emissions reduction.
Fitment & Compatibility Guarantee
Direct plug-and-play fitment for: Volkswagen Crafter, Passat B8, Tiguan, Golf VII, Sharan, Audi A4 B8/B9, A6 C7, Q5 2.0 TDI Euro 6 EA288.
Interchangeable with OEM part numbers: 0444021021, 0444021022, 04L131113, 04L131113A, 04L131113C, 04L131113J.
Technical Specifications
| Primary OE Part Number | 0444021021 |
| System Platform | Bosch Denoxtronic 3.1 / 5.1 |
| Operating Voltage | 12V Passenger / Van |
| Media Fluid | Diesel Exhaust Fluid (DEF) / AdBlue (ISO 22241) |
| Condition | Brand New OE-Quality Replacement |
| Warranty | 12 Months Replacement Warranty |
| Shipping | Fast Worldwide Dispatch (Air Express Available) |
Technical specifications
| Direct plug | and-play fitment for |
|---|---|
| ConditionBrand New OE | Quality Replacement |
| Month WarrantyHassle | free replacement guarantee |
Identification
| SKU | AST-DEF-0444021021-VAG |
|---|---|
| Part number | 0444021021 |
| Brand | Audi |
| Category | Audi & VW |
Verified fitment
| Brand / platform | Part number(s) |
|---|---|
| Vw | 0444021021 · AST-DEF-0444021021-VAG |
| Audi | 0444021021 · AST-DEF-0444021021-VAG |
12-month parts warranty
Every part ships with a 12-month warranty from the date of delivery. If the part fails under normal use within that window, we replace it or refund the purchase price — your choice.
What we cover
- Manufacturing defects — no questions asked.
- Early failure within the warranty period.
- Replacement shipping both ways, on us.
What we do not cover
- Damage from incorrect installation.
- Parts modified, disassembled, or used in racing.
- Cosmetic wear or normal ageing.
Shipping rates
| Destination | Carrier | Delivery | Cost |
|---|---|---|---|
| United States (cont.) | UPS / USPS | 2–4 biz days | Free $99+ · $6.90 |
| European Union | DHL / DPD | 3–6 biz days | Free $99+ · €8.90 |
| UK / Switzerland | DHL | 3–5 biz days | Free $99+ · £8.00 |
| Rest of world | DHL Express | 5–10 biz days | Calculated at checkout |
Returns
60-day no-fuss returns. Order a return label from your account, drop the part at any carrier drop-off, and we refund within 5 business days of receiving it. Wrong-fit returns are always free.
Returns policy
