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Details
| Specification | Value |
|---|---|
| Brand | DIEDERICHS |
| Category | Main headlight |
| Fitting Position | Left |
| Quality | Certified Quality |
| Test Mark | E1 2573 |
| Test Mark | E1 2572 |
| Rated Voltage [V] | 12 V |
| for PR number | 8Q3 |
| for PR number | 8BP |
| for PR number | AV1 |
| Manufacturer | Hella |
OE numbers (4)
Search by this OE number to find compatible parts
- AUDI—4F0 941 029 BP
- AUDI—4F0 941 029 CP
- AUDI—4F0 941 029 EP
- AUDI—4F0 941 029 FD
Where this part fits
Original-fit position for OE 4F0941029EP.
About this product
The DIEDERICHS Main headlight (1027085) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Fitting Position: Left, Quality: Certified Quality, Test Mark: E1 2573, Test Mark: E1 2572, Lamp Type: 144. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. This part supersedes original equipment references: 00310185A1, 1EL 009 925-511, 4F0 941 029 BP, 4F0 941 029 CP and 2 more. Matching these numbers confirms a like-for-like replacement with no loss of function. DIEDERICHS 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
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (2)
Main headlight DIEDERICHS 1027085 — compatible car models
| Manufacturer article number (MPN) | 1027085 |
|---|---|
| OE part numbers | 4F0 941 029 BP, 4F0 941 029 CP, 4F0 941 029 EP, 4F0 941 029 FD |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
DIEDERICHS 1027085 Priority Parts. Fitting Position: L. for PR number: 8BP. for PR number: 8Q3. for PR number: AV1. Indicator Colour: 28. Lamp Type: 144. Lamp Type: 40. Left-/right-hand drive vehicles: 1
- 1x Main headlight
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 Main headlight compatible with my car?
Use the vehicle selector at the top of the page to check compatibility. Enter your car's make, model, and engine — we'll confirm whether this Main headlight fits. All fitment data is verified through TecDoc.
What specifications does this DIEDERICHS Main headlight have?
This DIEDERICHS Main headlight has the following specifications: Fitting Position: L; Quality: Certified Quality; Test Mark: E1 2573; Test Mark: E1 2572; Lamp Type: 144; Lamp Type: 40. Check the full specifications table above for complete details.
What OE part numbers does this Main headlight replace?
This Main headlight replaces OE part numbers: 4F0 941 029 BP, 4F0 941 029 CP, 4F0 941 029 EP, 4F0 941 029 FD. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Main headlight cost?
Main headlight prices vary depending on brand, specifications, and vehicle compatibility. Check the current price above for this DIEDERICHS Main headlight. All parts come with our 14-day money-back guarantee.
How do I know when to replace my Main headlight?
Regular inspection of your Main headlight 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 Main headlight?
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 Main headlight fitted by a professional mechanic.
Can I use this part as a replacement for OE 4F0 941 029 BP?
Yes, this DIEDERICHS Main headlight is a direct replacement for OE part number 4F0 941 029 BP. 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.
