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Details
| Specification | Value |
|---|---|
| Brand | AIC |
| Voltage [V] | 12 V |
| Diameter [mm] | 150 mm |
| Number of pins | 2 -pin connector |
OE numbers (1)
Search by this OE number to find compatible parts
- AUDI / VAG—4B1 820 021B
Where this part fits
Original-fit position for OE 4B1820021B. The red ring marks where this part installs on the vehicle.
About this product
AIC Interior Blower (51985) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Voltage [V]: Zinc V, Diameter [mm]: 150 mm, Left-/right-hand drive vehicles: Steel, Vehicle Equipment: 0, Rotation Direction: 50 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with AUDI vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 002-60-07820, 0315773, 0599.1175, 06343 and 49 more. Matching these numbers confirms a like-for-like replacement with no loss of function. AIC is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
Suitable cars
Equivalent products (59)
Show all 59 OE numbers
Interior Blower AIC 51985 — compatible car models
| Car models | AUDI: A6 C5 (4B2, 4B4), A6 C5 Avant (4B5, 4B6), ALLROAD C5 (4BH) |
|---|---|
| Engines | 1.8; 2.5 TDI quattro |
| Year of manufacture | 1997-2006 |
| Manufacturer article number (MPN) | 51985 |
| OE part numbers | 4B1 820 021B |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
AIC 51985 Original AIC Quality. Diameter [mm]: 150 mm. Left-/right-hand drive vehicles: 1. Number of pins: 2 -pin connector. Rotation Direction: 50. Vehicle Equipment: 0. Voltage [V]: 12 V
- 1x Interior Blower
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 5–9 business days
- Order before 5pm — ships the next working day
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Interior Blower compatible with my car?
This Interior Blower fits AUDI vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this AIC Interior Blower have?
This AIC Interior Blower has the following specifications: Voltage [V]: 12 V; Diameter [mm]: 150 mm; Left-/right-hand drive vehicles: 1; Vehicle Equipment: 0; Rotation Direction: 50; Number of pins: 2 -pin connector. Check the full specifications table above for complete details.
What OE part numbers does this Interior Blower replace?
This Interior Blower replaces OE part numbers: 4B1 820 021B. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Interior Blower cost?
This AIC Interior Blower is available for £81.99. Interior Blower prices vary depending on brand, specifications, and vehicle compatibility. AIC parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Interior Blower?
Regular inspection of your Interior Blower is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a Interior Blower?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the Interior Blower fitted by a professional mechanic.
Can I use this part as a replacement for OE 4B1 820 021B?
Yes, this AIC Interior Blower is a direct replacement for OE part number 4B1 820 021B. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
