A4542 12V 150A Alternator Fits Vauxhall Insignia, Opel Insignia
Price range: £146.97 through £196.71
Compare the A4542 12V 150A alternator from Sahibs Auto Electrics with the unit currently fitted. Listed applications include selected Vauxhall Insignia, Vauxhall Insignia Sports Tourer, Opel Insignia, Opel Insignia Sports Tourer models. Identification references include Lucas LRA04542, Bosch 126312009. Its listed 12V 150A 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 A4542 replacement alternator online from Sahibs Auto Electrics for UK delivery or Click & Collect.
Product Specification
| Description | Value |
|---|---|
| AMP | 150 A |
| Volt | 12 V |
| No. of Grooves | 6 qty |
| Pulley Diameter | 54 mm |
| Mounting holes | 3 qty |
| B+ | M8 |
| Insulated Return | No |
| Water cooled | No |
| Vacuum pump | No |
| Start/Stop | No |
| Weight | 5.98 Kg |
Cross Reference
| Reference Number | Brand |
|---|---|
| DYA4542 | Dyno Electrics |
| UD04082(SEG)A | AS-PL |
| 126312009 | BOSCH |
| 126312010 | BOSCH |
| 126312130 | BOSCH |
| 126312149 | BOSCH |
| 126312150 | BOSCH |
| 13513713 | OPEL |
| 25506938 | OPEL |
| 39122547 | OPEL |
| 95525202 | OPEL |
| CAL10A17GS | CASCO |
| 40854 | CEVAM |
| 2283091502 | DRI |
| 28-8651 | ELSTOCK |
| 209630 | ERA |
| 12091038 | EUROTEC |
| 115235 | FARCOM |
| 20010A17OV | ITAB AUTOMOTIVE |
| ALB4278 | KRAUF |
| 556259RIB | KUHNER |
| LRA04542 | LUCAS |
| LRA4542 | LUCAS |
| 135.934.150.010 | PSH |
| 135.934.150.280 | PSH |
| 2010171AOE | REAL |
| 2010A17.1 | SANDO |
| AL04425 | TMI |
| 21912N | WAI / TRANSPO |
Vehicle Applications
| Brand | Model | Engine | Engine Code | Series | Model Type | Type | Year |
|---|---|---|---|---|---|---|---|
| OPEL | Insignia | 1.6 (1598ccm) Diesel | B16DTH/D16DTH | B | 68 | 2017 - | |
| OPEL | Insignia | 1.6 (1598ccm) Diesel | B16DTE/D16DTE/D16DTN | B | 68 | 2017 - | |
| OPEL | Insignia Sports Tourer | 1.6 (1598ccm) Diesel | B16DTE/D16DTE/D16DTN | B | Sports Tourer | 35 | 2017 - |
| OPEL | Insignia Sports Tourer | 1.6 (1598ccm) Diesel | B16DTH/D16DTH | B | Sports Tourer | 35 | 2017 - |
| VAUXHALL | Insignia | 1.6 (1598ccm) Diesel | B16DTE/D16DTE/D16DTN | B | 68 | 2017 - | |
| VAUXHALL | Insignia | 1.6 (1598ccm) Diesel | B16DTH/D16DTH | B | 68 | 2017 - | |
| VAUXHALL | Insignia Sports Tourer | 1.6 (1598ccm) Diesel | B16DTH/D16DTH | B | Sports Tourer | 35 | 2017 - |
| VAUXHALL | Insignia Sports Tourer | 1.6 (1598ccm) Diesel | B16DTE/D16DTE/D16DTN | B | Sports Tourer | 35 | 2017 - |
Description
A4542 Replacement Alternator
For a A4542 alternator enquiry, use Lucas reference LRA04542 alongside the vehicle and original unit details. The listed electrical rating is 12V 150A. An alternator maintains battery charge and supplies electrical power while the engine runs. Applications include selected Vauxhall Insignia 1.6 Diesel variants.
Key Features and Benefits
- 12V electrical system: match the vehicle voltage before selecting a unit.
- 150A 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.
- M8 B+ terminal: check the connection against the original unit.
Compatible Vehicles and Applications
- Vauxhall Insignia 1.6 Diesel – selected applications 2017 – (engine code B16DTE/D16DTE/D16DTN).
- Vauxhall Insignia Sports Tourer 1.6 Diesel – selected applications 2017 – (engine code B16DTH/D16DTH).
- Opel Insignia 1.6 Diesel – selected applications 2017 – (engine code B16DTH/D16DTH).
- Opel Insignia Sports Tourer 1.6 Diesel – selected applications 2017 – (engine code B16DTE/D16DTE/D16DTN).
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 A4542. Compare them with the original unit and technical specifications; a number match alone does not establish vehicle compatibility.
126312009, 126312010, 126312130, 126312149, 126312150, LRA04542, LRA4542
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 A4542 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 A4542 fit my Vauxhall Insignia?
Vauxhall Insignia 1.6 Diesel (2017 -) is a listed application. Confirm the engine code and original unit configuration in the detailed fitment table.
Does A4542 replace Lucas LRA04542?
Lucas LRA04542 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 A4542?
The listed details include 12V, 150A output, 6 pulley grooves. Compare the complete specifications on this page with the unit being replaced.
Is A4542 new or remanufactured?
Check the current product condition selection for A4542. Confirm the supplier and availability of the option you want before completing the order.
What should I compare before ordering A4542?
Compare 12V compatibility, 150A 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.
