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Windshield Defroster Nozzle - Audi (8R1-858-431-B)
2009-2017 Audi - 8R1-858-431-B
Review Fitment & Product Details
Details
- Brand:
- SKU:
8R1-858-431-B
- Positions: Front
- Other Names:
Intermediate Duct, Plate
- Description:
Without comfort ac. This genuine Audi Windshield Defroster Nozzle, part number 8R1-858-431-B, provides visibility and, on modern Audi vehicles, often carries sensors, heating elements, and camera hardware that make it part of the driver assistance system rather than a simple glass panel. Genuine Audi tooling and materials mean it installs into the original mounting points without modification. Check the applications list or supply your VIN to confirm this part fits your vehicle.
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Vehicle Fitment
Vehicle Fitment
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|
Key Product Information
Additional Information
| SYMPTOMS | Before ordering 8R1-858-431-B, look for these indicators: chips or cracks that spread, wind noise at speed, water intrusion, a mirror that will not adjust or fold, a heating element that leaves an uncleared patch, or a camera view that is obscured. Noting which conditions are present shortens diagnosis considerably at the shop. |
| TROUBLESHOOTING | Diagnosis on vehicles using 8R1-858-431-B should start here: check the seal and drainage path before assuming the glass is at fault for a leak, and verify motor and heating circuits at the connector on powered mirrors. Document the readings before and after the repair so the fix can be verified. |
| INSTALLATION | Installing 8R1-858-431-B correctly requires clean, primed bonding surfaces on glued glass and correct cure time before the vehicle is driven, and cameras or rain sensors need recalibration afterward. Confirm correct operation and scan for stored faults before returning the vehicle to service. |
| MAINTENANCE | Preventive maintenance around 8R1-858-431-B means keeping glass and seals clean, avoiding ammonia based cleaners on coated or heated surfaces, and addressing chips before thermal cycling spreads them. Consistent service intervals matter more than mileage alone on this system. |
| GENERAL_NOTES | Worth knowing before ordering 8R1-858-431-B: windshields with acoustic layers, heating, head up display, or camera brackets are not interchangeable with base glass, so verify the option content before ordering. Aftermarket equivalents often differ in material and tolerance, which shows up during installation. |
| REPLACEMENTS | Commonly replaced alongside 8R1-858-431-B: moldings, clips, seals, and adhesive are single use items renewed with the glass, and driver assistance calibration follows windshield replacement. Check the repair manual for the full list of single use fasteners for this procedure. |
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