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Details
| Specification | Value |
|---|---|
| Brand | HELLA |
| MPN | 3ag003399-101 |
| Voltage [V] | 24 V |
| Diameter [mm] | 123 mm |
| Width [mm] | 125 mm |
| Operating Mode | EL |
| Overall Height [mm] | 135 mm |
| Protection Type (IP Code) | IPX9K |
| Protection Type (IP Code) | IPX7 |
| Depth [mm] | 85 mm |
| Frequency Range [Hz] | 500 Hz |
| Frequency Range [Hz] | 375 Hz |
| Power Consumption [W] | 84 W |
| Sound Level [dB(A)] | 110 dB(A) |
| fulfils ECE norm | R28 |
| Temperature range from [°C] | -40 °C |
| Temperature range to [°C] | 75 °C |
| Power consumption [A] | 3.5 A |
OE/OEM numbers (23)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—003 542 45 20
- HOLMER—1021042981
- SCHMITZ CARGOBULL—1058
- LIEBHERR—10675526
- AUWÄRTER / NEOPLAN / MAN—1512.100.00
- KRAUSS-MAFFEI—17336220N0000
- VDL—190101500
- KOMATSU—20E-06-H9150
- SOLARIS—2602-770-105
- ZIEGLER—407711
- FIAT / IVECO—42080296
- JOHN DEERE—55 02 8
- LIEBHERR—614001208
- LIEBHERR—6 140 461 14
- LIEBHERR—6 204 593
- VAN HOOL—660760222
- ALEXANDER DENNIS—667251
- STEYR / MERCEDES-BENZ—7.171.93.552.0
- KÖGEL—77839
- MERCEDES-BENZ—A 003 542 45 20
- MERCEDES-BENZ—A 717 193 55 20
- SANY—B240500000012
- SOLARIS—NT006881
What's in the kit
This kit ships with 2 factory-matched components. Each part below is supplied as part of the kit; click any linked MPN to view that component on its own.
| # | Part number | Component | Qty |
|---|---|---|---|
| 1 | 3AF 003 399-061 | Signal Horn
| 1 |
| 2 | 3AF 003 399-071 | Signal Horn
| 1 |
About this product
Sourced from HELLA, this signal horn (3AG 003 399-101) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Voltage [V]: 24 V, Special Purpose Vehicle: Stainless Steel, Diameter [mm]: 123 mm, Width [mm]: 125 mm, Operating Mode: Electric — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. This part supersedes original equipment references: 003 399-101, 003399101, 003 542 45 20, 1021042981 and 28 more. Matching these numbers confirms a like-for-like replacement with no loss of function. HELLA 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
About HELLA
HELLA, founded in 1899 in Lippstadt, Germany, is a global automotive lighting and electronics specialist now operating as FORVIA HELLA. HELLA specialises in headlamps, rear lights, signal lighting, sensors, actuators, and electronic control units. As an OE supplier to virtually all major car manufacturers, HELLA products represent the cutting edge of automotive lighting and electronic technology. With 125+ years of innovation in vehicle illumination and electronics, HELLA is the definitive choice for high-quality lighting and electronic component replacements.
Suitable cars
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (7)
Signal Horn HELLA 3AG 003 399-101 — compatible car models
| Manufacturer article number (MPN) | 3AG 003 399-101 |
|---|---|
| OE part numbers | 003 542 45 20, 1021042981, 1058, 10675526, 1512.100.00, 17336220N0000, 190101500, 20E-06-H9150, 2602-770-105, 407711, 42080296, 55 02 8, 614001208, 6 140 461 14, 6 204 593, 660760222, 667251, 7.171.93.552.0, 77839, A 003 542 45 20 (+3 more) |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
HELLA 3ag003399-101 . Depth [mm]: 85 mm. Diameter [mm]: 123 mm. Frequency Range [Hz]: 375 Hz. Frequency Range [Hz]: 500 Hz. fulfils ECE norm: R28. Housing Colour: 7. Mounting Type: 14. Operating Mode: EL
- 1x Signal Horn
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- 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 Signal Horn 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 Signal Horn fits. All fitment data is verified through TecDoc.
What specifications does this HELLA Signal Horn have?
This HELLA Signal Horn has the following specifications: Voltage [V]: 24 V; Special Purpose Vehicle: 9; Diameter [mm]: 123 mm; Width [mm]: 125 mm; Operating Mode: EL; Registration Type: 3. Check the full specifications table above for complete details.
What OE part numbers does this Signal Horn replace?
This Signal Horn replaces OE part numbers: 003 542 45 20, 1021042981, 1058, 10675526, 1512.100.00, 17336220N0000, 190101500, 20E-06-H9150 and 15 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Signal Horn cost?
This HELLA Signal Horn is available for £98.99. Signal Horn prices vary depending on brand, specifications, and vehicle compatibility. HELLA parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Signal Horn?
Regular inspection of your Signal Horn 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 Signal Horn?
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 Signal Horn fitted by a professional mechanic.
Can I use this part as a replacement for OE 003 542 45 20?
Yes, this HELLA Signal Horn is a direct replacement for OE part number 003 542 45 20. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Is the HELLA 3AG 003 399-101 the same as the HELLA 3AG 003 399-801?
No, while both are Signal Horn parts, they are different products. The HELLA 3AG 003 399-101 has Voltage [V]: 24 V, Special Purpose Vehicle: 9, Diameter [mm]: 123 mm. The HELLA 3AG 003 399-801 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
