B0203 12V 75A Alternator Fits Vauxhall Astra, Renault Laguna
Price range: £88.31 through £118.20
The B0203 12V 75A Alternator is a replacement charging unit from Sahibs Auto Electrics. Listed applications include selected Vauxhall Astra, Renault Laguna, Renault Laguna Estate/Break models. Identification references include Lucas LRB00203, Bosch 98040001, Valeo 436465. Its listed 12V 75A rating provides an electrical matching point for your existing unit. Check the 6-groove pulley, connections and mounting arrangement. Check the current condition options and availability before purchase. Match the exact engine and production details before ordering. Buy your B0203 replacement alternator online from Sahibs Auto Electrics for UK delivery or Click & Collect.
Product Specification
| Description | Value |
|---|---|
| AMP | 75 A |
| Volt | 12 V |
| No. of Grooves | 6 qty |
| Pulley Diameter | 55 mm |
| Mounting holes | 3 qty |
| Position | 35° |
| B+ | M6 |
| Insulated Return | No |
| Water cooled | No |
| Vacuum pump | No |
| Start/Stop | No |
| Weight | 4.9 Kg |
Cross Reference
| Reference Number | Brand |
|---|---|
| DYB0203 | Dyno Electrics |
| 401745131 | Euro Car Part |
| UD101974A | AS-PL |
| 98040001 | BOSCH |
| 9.43E+11 | MAGNETI MARELLI |
| 9.44E+11 | MAGNETI MARELLI |
| 11-Mar | MAGNETI MARELLI |
| MRA40001 | MAGNETI MARELLI |
| 7700857075 | RENAULT |
| 7701352301 | RENAULT |
| 436465 | VALEO |
| A11VI26 | VALEO |
| AZMT-49-036-1149 | A.Z. MEISTERTEILE |
| AZMT-49-036-1213 | A.Z. MEISTERTEILE |
| 10441882 | ALANKO |
| L40000 | ATL AUTOTECHNIK |
| BBA2809 | BORG & BECK |
| L611456 | BTS TURBO |
| 230130752 | DRI |
| 56312 | EAI |
| 28-1911 | ELSTOCK |
| 12040000 | EUROTEC |
| 118788 | FARCOM |
| 9040001 | FRIESEN |
| 3122099 | HENKEL PARTS |
| ALV0896 | KRAUF |
| 30896RI | KUHNER |
| 30896RIV | KUHNER |
| LRB00203 | LUCAS |
| LRB203 | LUCAS |
| 575.508.075.000 | PSH |
| 575.508.075.310 | PSH |
| 575.508.075.395 | PSH |
| 575.508.075.501 | PSH |
| QRA2114 | QUINTON HAZELL |
| TR8034 | SNRA |
| STX100530 | STARDAX |
| STX100530R | STARDAX |
| 312ST65 | STARTCAR |
| AL01086 | TMI |
| ALT14050 | WOODAUTO |
| WOOALT14050 | WOODAUTO |
Alternative Parts
| Alternative Part | Current Description | Alternative Description | Direct Alternative |
|---|---|---|---|
| B0202 | 75A | 110A | Yes |
| A1526 | 75A | 110A Spade terminal D/L | No |
Vehicle Applications
| Brand | Model | Engine | Engine Code | Series | Model Type | Type | Year |
|---|---|---|---|---|---|---|---|
| RENAULT | Laguna | 1.8 (1783ccm) Petrol | F3P676K/F3P720K/F3P724K | PHASE I | B560/B56A/B56B/B56Z | 1993 - 1995 | |
| RENAULT | Laguna | 1.8 (1783ccm) Petrol | F3P676K/F3P678K | PHASE I | B560/B56S | 1994 - 1998 | |
| RENAULT | Laguna | 1.8 (1794ccm) Petrol | F3P676/F3P720/F3P724 | PHASE I | B560/B56A/B56B/B56Z | 1993 - 2001 | |
| RENAULT | Laguna | 1.8 (1794ccm) Petrol | F3P670/F3P674 | PHASE I | B560/B56T | 1995 - 2001 | |
| RENAULT | Laguna Estate/Break | 1.8 (1783ccm) Petrol | F3P724K | PHASE I | Nevada/Sport Tourer | K56Z | 1995 - 1995 |
| RENAULT | Laguna Estate/Break | 1.8 (1783ccm) Petrol | F3P670K/F3P674K/F3P678K | PHASE I | Grandtour/Nevada | K560/K56S/K56T | 1995 - 2001 |
| RENAULT | Laguna Estate/Break | 1.8 (1794ccm) Petrol | F3P670/F3P674/F3P678 | PHASE I | Grandtour/Nevada | K560/K56S/K56T | 1995 - 1995 |
| RENAULT | Laguna Estate/Break | 2.0 (1998ccm) Petrol | F3R611/F3R722/F3R723/F3R728/F3R729/F3R768/F3R769 | PHASE I | Grandtour/Nevada/Sport Tourer | K56C/K56H/K56L/K56N | 1995 - 1995 |
| VAUXHALL | Astra | 1.8 (1796ccm) Petrol | 18E/18SE | 43/44 | 1984 - 1991 |
Description
B0203 Replacement Alternator
Choose a replacement by comparing the B0203 alternator and its Lucas reference, LRB00203, with your existing unit. The listed electrical rating is 12V 75A. An alternator maintains battery charge and supplies electrical power while the engine runs. Applications include selected Vauxhall Astra 1.8 Petrol variants.
Key Features and Benefits
- 12V electrical system: match the vehicle voltage before selecting a unit.
- 75A output: compare the listed rating with the original alternator.
- 6-groove pulley: check belt profile and alignment against the existing unit.
- 3 mounting holes: compare the fixing pattern and unit position.
- M6 B+ terminal: check the connection against the original unit.
Compatible Vehicles and Applications
- Vauxhall Astra 1.8 Petrol – selected applications 1984–1991 (engine code 18E/18SE).
- Renault Laguna 1.8 Petrol – selected applications 1993–1995 (engine code F3P676K/F3P720K/F3P724K).
- Renault Laguna Estate/Break 1.8 Petrol – selected applications 1995–1995 (engine code F3P724K).
These are selected applications, not the complete fitment list. Check the detailed vehicle compatibility table, engine code and production year, then compare the original unit before ordering.
OE Numbers and Cross-Reference Information
The following cross-reference numbers are associated with B0203. Compare them with the original unit and technical specifications; a number match alone does not establish vehicle compatibility.
98040001, 436465, A11VI26, LRB00203, LRB203, 7700857075, 7701352301
The full manufacturer cross-reference and OE listings are available elsewhere on this page. Confirm whether a number is an OE or aftermarket reference when comparing the original unit.
When Should You Replace Your Alternator?
Charging warning lights, repeated loss of battery charge, dim or fluctuating lights and inconsistent electrical operation can indicate a charging-system problem. Battery condition, wiring and the drive belt can produce similar symptoms; arrange a diagnostic check before replacing the alternator.
Why Buy from Sahibs Auto Electrics?
Sahibs Auto Electrics is a UK automotive electrical parts specialist supplying alternators and starter motors. Ask for help identifying B0203 using the existing part number and vehicle details. Check the current condition options and availability before purchase. Buy online for UK delivery or Click & Collect, checking the current order arrangements.
Frequently Asked Questions
Will B0203 fit my Vauxhall Astra?
Vauxhall Astra 1.8 Petrol (1984–1991) is a listed application. Confirm the engine code and original unit configuration in the detailed fitment table.
Does B0203 replace Lucas LRB00203?
Lucas LRB00203 is a listed identification reference. Compare it with the original unit and specifications; a cross-reference does not guarantee compatibility by itself.
What specifications are listed for B0203?
The listed details include 12V, 75A output, 6 pulley grooves. Compare the complete specifications on this page with the unit being replaced.
Is B0203 new or remanufactured?
Check the current product condition selection for B0203. Confirm the supplier and availability of the option you want before completing the order.
What should I compare before ordering B0203?
Compare 12V compatibility, 75A output, pulley configuration, mounting points and electrical connections with the original alternator.
Does a battery warning light prove the alternator has failed?
No. Battery, belt, wiring and control faults can also affect charging. Use a charging-system test to establish the cause before ordering a replacement.
