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Details
| Specification | Value |
|---|---|
| Brand | HELLA |
| MPN | 5dr004242-051 |
| Voltage [V] | 12 V |
| Manufacturer Restriction | Bosch |
| Operating voltage [V] | 14.5 V |
OE/OEM numbers (80)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—003 154 02 06
- SKODA—004 003 215
- SKODA—004 003 226
- AUDI / SEAT / VW—021 903 803 B
- AUDI—028 903 025 G
- AUDI—028 903 025 GX
- AUDI—028 903 025 H
- AUDI—028 903 025 HV
- AUDI—028 903 025 HX
- AUDI—028 903 025 P
- AUDI—028 903 025 Q
- AUDI—028 903 025 QV
- AUDI—028 903 025 QX
- AUDI—028 903 025 R
- AUDI—028 903 028 L
- AUDI—028 903 028 LV
- AUDI—028 903 028 LX
- AUDI / SEAT / VW—028 903 803 B
- AUDI / SEAT / VW—028 903 803 C
- AUDI / SEAT / VW—030 905 241 A
- SEAT / SKODA—038 903 803 D
- AUDI—050 903 017 A
- AUDI / VW—054 903 803
- AUDI / SEAT / VW—054 903 803 A
- AUDI / VW—078 903 803
- DEUTZ-FAHR—118 0855
- OPEL—12 04 271
- OPEL—1204284
- OPEL—12 04 287
- BMW—12 31 1 247 892
- BMW—12 31 1 432 964
- BMW—12 31 1 730 604
- BMW—12 31 1 738 351
- BMW—12 31 1 739 365
- BMW—12 31 1 747 920
- BMW—12 31 7 739 365
- BMW—1 247 892
- BMW—1 432 964
- BMW—1 730 604
- BMW—1 738 351
- BMW—1 739 365
- BMW—1 747 920
- ALFA ROMEO / FIAT / LANCIA—217 4825
- NISSAN—23215-72J00
- DAF / VOLVO—3544570
- AUDI / VW—389 038 03D
- IVECO—42531176
- MACK—4381 66721
- SCANIA—4466918
- SCANIA—5246863
- SEAT—549 038 03
- CITROËN / PEUGEOT—5716.97
- CITROËN / PEUGEOT—5761.86
- CITROËN / PEUGEOT—5761.96
- CITROËN—5761.97
- BMW—7 739 365
- SEAT—789 038 03
- GENERAL MOTORS / OPEL / SAAB—90486255
- GENERAL MOTORS / OPEL / SAAB—90541990
- GENERAL MOTORS / OPEL / SAAB—90543230
- OPEL—90543233
- OPEL—90543234
- OPEL—90561967
- OPEL—90561968
- OPEL—90561969
- OPEL—9117935
- CHEVROLET / GENERAL MOTORS / OPEL / SAAB—93253788
- ALFA ROMEO / FIAT / LANCIA—9943986
- ALFA ROMEO / FIAT / LANCIA—994 4423
- ALFA ROMEO / FIAT—9944659
- ALFA ROMEO / FIAT / LANCIA—9944827
- ALFA ROMEO / FIAT / LANCIA—994 6659
- ALFA ROMEO / FIAT / LANCIA—9947103
- ALFA ROMEO / FIAT / LANCIA—994 7418
- LANCIA—9947830
- ALFA ROMEO / FIAT / IVECO / LANCIA—995 0401
- ALFA ROMEO / FIAT / IVECO / LANCIA—995 0561
- ALFA ROMEO / FIAT—995 0830
- MERCEDES-BENZ—A 003 154 02 06
- FENDT—F 515 900 010 010
Where this part fits
Original-fit position for OE 028903803C. The red ring marks where this part installs on the vehicle.
About this product
Sourced from HELLA, this alternator regulator (5DR 004 242-051) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Voltage [V]: Zinc V, Manufacturer Restriction: Bosch, Operating voltage [V]: Nylon, Rubber V — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit ALFA ROMEO, AUDI, BMW, CITROËN and 6 other makes models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 003 154 02 06, 004 003 215, 004 003 226, 004 242-051 and 411 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
Equivalent products (200)
Show all 200 OE numbers
Alternator Regulator HELLA 5DR 004 242-051 — compatible car models
| Car models | ALFA ROMEO: 145 (930), 146 (930), 155 (167), 164 (164); AUDI: 100 C4 Avant (4A5), 100 C4 Saloon (4A2), 80 B4 Avant (8C5), 80 B4 Saloon (8C2), A4 B5 (8D2), A4 B5 Avant (8D5), A6 C4 (4A2), A6 C4 Avant (4A5), A8 D2 (4D2, 4D8), CABRIOLET B3 (8G7) (+1 more); BMW: 3 Convertible (E36), 3 Coupe (E36), 3 (E36), 3 Touring (E36), 5 (E34), 5 Touring (E34), 7 (E32), 8 (E31); CITROËN: XANTIA (X1, X2), ZX Break (N2), ZX (N2); NISSAN: PRIMERA Hatchback (P10), PRIMERA (P10); OPEL: ASTRA F CLASSIC Estate (T92), ASTRA F CLASSIC Hatchback (T92) |
|---|---|
| Engines | 1.4 i.e. (930.A3); 1.4 i.e. (930.B3); 1.7 T.S. (167.A4D, 167.A4H); 2.0 Twin Spark (164.A2C, 164.A2L, 164A2H); 2.0 E; 2.0; 1.6 E; 1.6; 1.8; 1.9 TDI; 2.8; 2.0 16 V; 320 i; 520 i 24V; 520 i (+8 more) |
| Year of manufacture | 1985-2005 |
| Manufacturer article number (MPN) | 5DR 004 242-051 |
| OE part numbers | 003 154 02 06, 004 003 215, 004 003 226, 021 903 803 B, 028 903 025 G, 028 903 025 GX, 028 903 025 H, 028 903 025 HV, 028 903 025 HX, 028 903 025 P, 028 903 025 Q, 028 903 025 QV, 028 903 025 QX, 028 903 025 R, 028 903 028 L, 028 903 028 LV, 028 903 028 LX, 028 903 803 B, 028 903 803 C, 030 905 241 A (+60 more) |
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
HELLA 5dr004242-051 . Manufacturer Restriction: Bosch. Operating voltage [V]: 14,5 V. Voltage [V]: 12 V
- 1x Alternator Regulator
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 Alternator Regulator compatible with my car?
This Alternator Regulator fits ALFA ROMEO, AUDI, BMW, CITROËN, NISSAN and 5 more 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 HELLA Alternator Regulator have?
This HELLA Alternator Regulator has the following specifications: Voltage [V]: 12 V; Manufacturer Restriction: Bosch; Operating voltage [V]: 14,5 V. Check the full specifications table above for complete details.
What OE part numbers does this Alternator Regulator replace?
This Alternator Regulator replaces OE part numbers: 003 154 02 06, 004 003 215, 004 003 226, 021 903 803 B, 028 903 025 G, 028 903 025 GX, 028 903 025 H, 028 903 025 HV and 72 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Alternator Regulator cost?
This HELLA Alternator Regulator is available for £35.99. Alternator Regulator 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 Alternator Regulator?
Regular inspection of your Alternator Regulator 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 Alternator Regulator?
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 Alternator Regulator fitted by a professional mechanic.
Can I use this part as a replacement for OE 003 154 02 06?
Yes, this HELLA Alternator Regulator is a direct replacement for OE part number 003 154 02 06. 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 5DR 004 242-051 the same as the HELLA 5DR 004 241-121?
No, while both are Alternator Regulator parts, they are different products. The HELLA 5DR 004 242-051 has Voltage [V]: 12 V, Manufacturer Restriction: Bosch, Operating voltage [V]: 14,5 V. The HELLA 5DR 004 241-121 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.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
