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Details
| Specification | Value |
|---|---|
| Brand | BOSCH |
| MPN | 0986ah0745 |
| Voltage [V] | 12 V |
| Bore Diameter [mm] | 8.3 mm |
| Operating Mode | PN |
| Power Consumption [W] | 60 W |
| Sound Level [dB(A)] | 110 dB(A) |
OE/OEM numbers (32)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—003 542 02 20
- MERCEDES-BENZ—004 542 57 20
- MERCEDES-BENZ—005 542 27 20
- MERCEDES-BENZ—005 542 28 20
- MERCEDES-BENZ—005 542 34 20
- MERCEDES-BENZ—005 542 36 20
- MERCEDES-BENZ—005 542 41 20
- MERCEDES-BENZ—005 542 43 20
- MERCEDES-BENZ—005 542 45 20
- MERCEDES-BENZ—006 542 12 20
- MERCEDES-BENZ—006 542 18 20
- MERCEDES-BENZ—006 542 44 20
- MERCEDES-BENZ—203 542 01 20
- MERCEDES-BENZ—230 542 03 20
- VW—40951223
- AUDI / VW—4L0951223
- MERCEDES-BENZ—55424520
- VW—80951223
- MERCEDES-BENZ—A 003 542 02 20
- MERCEDES-BENZ—A 004 542 57 20
- MERCEDES-BENZ—A 005 542 27 20
- MERCEDES-BENZ—A 005 542 28 20
- MERCEDES-BENZ—A 005 542 34 20
- MERCEDES-BENZ—A 005 542 36 20
- MERCEDES-BENZ—A 005 542 41 20
- MERCEDES-BENZ—A 005 542 43 20
- MERCEDES-BENZ—A 005 542 45 20
- MERCEDES-BENZ—A 006 542 12 20
- MERCEDES-BENZ—A 006 542 18 20
- MERCEDES-BENZ—A 006 542 44 20
- MERCEDES-BENZ—A 203 542 01 20
- MERCEDES-BENZ—A 230 542 03 20
Where this part fits
Original-fit position for OE 0065424420. The red ring marks where this part installs on the vehicle.

About this product
BOSCH Trumpet Horn (0 986 AH0 745) 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, Bore Diameter [mm]: Carbon, Cast Iron mm, Operating Mode: PN, Power Consumption [W]: 60 W, Signal: Aluminium — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. This part supersedes original equipment references: 003 542 02 20, 004 542 57 20, 005 542 27 20, 005 542 28 20 and 41 more. Matching these numbers confirms a like-for-like replacement with no loss of function. BOSCH 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 BOSCH
Robert Bosch GmbH, founded in 1886 in Stuttgart, Germany, is one of the world's largest automotive parts suppliers. Bosch specialises in braking systems, fuel injection, spark plugs, alternators, and electronic engine management. As an OE supplier to virtually every major car manufacturer, Bosch parts meet or exceed original equipment specifications. With over 130 years of engineering innovation, choosing Bosch means choosing proven reliability backed by extensive research and development.
Suitable cars
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (13)
Trumpet Horn BOSCH 0 986 AH0 745 — compatible car models
| Manufacturer article number (MPN) | 0 986 AH0 745 |
|---|---|
| OE part numbers | 003 542 02 20, 004 542 57 20, 005 542 27 20, 005 542 28 20, 005 542 34 20, 005 542 36 20, 005 542 41 20, 005 542 43 20, 005 542 45 20, 006 542 12 20, 006 542 18 20, 006 542 44 20, 203 542 01 20, 230 542 03 20, 40951223, 4L0951223, 55424520, 80951223, A 003 542 02 20, A 004 542 57 20 (+12 more) |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
BOSCH 0986ah0745 . Bore Diameter [mm]: 8,3 mm. Operating Mode: PN. Power Consumption [W]: 60 W. Signal: 2. Sound Level [dB(A)]: 110 dB(A). Voltage [V]: 12 V
- 1x Trumpet 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 Trumpet 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 Trumpet Horn fits. All fitment data is verified through TecDoc.
What specifications does this BOSCH Trumpet Horn have?
This BOSCH Trumpet Horn has the following specifications: Voltage [V]: 12 V; Bore Diameter [mm]: 8,3 mm; Operating Mode: PN; Power Consumption [W]: 60 W; Signal: 2; Sound Level [dB(A)]: 110 dB(A). Check the full specifications table above for complete details.
What OE part numbers does this Trumpet Horn replace?
This Trumpet Horn replaces OE part numbers: 003 542 02 20, 004 542 57 20, 005 542 27 20, 005 542 28 20, 005 542 34 20, 005 542 36 20, 005 542 41 20, 005 542 43 20 and 24 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Trumpet Horn cost?
This BOSCH Trumpet Horn is available for £17.99. Trumpet Horn prices vary depending on brand, specifications, and vehicle compatibility. BOSCH parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Trumpet Horn?
Regular inspection of your Trumpet 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 Trumpet 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 Trumpet Horn fitted by a professional mechanic.
Can I use this part as a replacement for OE 003 542 02 20?
Yes, this BOSCH Trumpet Horn is a direct replacement for OE part number 003 542 02 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 BOSCH 0 986 AH0 745 the same as the BOSCH 0 328 006 002?
No, while both are Trumpet Horn parts, they are different products. The BOSCH 0 986 AH0 745 has Voltage [V]: 12 V, Bore Diameter [mm]: 8,3 mm, Operating Mode: PN. The BOSCH 0 328 006 002 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.
