A1842 12V 140A Alternator Fits Bmw 525d, Bmw 725d
Price range: £120.00 through £192.00
Compare the A1842 12V 140A alternator from Sahibs Auto Electrics with the unit currently fitted. Listed applications include selected BMW 525d, BMW 725d models. Identification references include Lucas LRA01842, Bosch 123515007, Delco Remy DRA9730. Its listed 12V 140A rating provides an electrical matching point for your existing unit. Check the 5-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 A1842 replacement alternator online from Sahibs Auto Electrics for UK delivery or Click & Collect.
Product Specification
| Description | Value |
|---|---|
| AMP | 140 A |
| Volt | 12 V |
| No. of Grooves | 5 qty |
| Pulley Diameter | 54 mm |
| Mounting holes | 2 qty |
| Position | -70° |
| B+ | M8 |
| Insulated Return | No |
| Water cooled | No |
| Vacuum pump | No |
| Start/Stop | No |
| Weight | 7.1 Kg |
Cross Reference
| Reference Number | Brand |
|---|---|
| DYA1842 | Dyno Electrics |
| 123515007 | Bosch |
| 986039730 | Bosch Exchange |
| 12201332 | AES |
| 12312246149 | BMW |
| 12312246150 | BMW |
| 215519140 | PSH |
| 2246149 | BMW |
| 22842R | WAI |
| ALT10441 | Wood Auto |
| CA1503IR | HC-Parts |
| DRA9730 | Delco Remy |
| HCA1503IR | HC-Parts |
| LRA01842 | Lucas |
| LRA1842 | Lucas |
| Mar-98 | Magneti Marelli |
| WOOALT10441 | Wood Auto |
Vehicle Applications
| Brand | Model | Engine | Engine Code | Series | Model Type | Type | Year |
|---|---|---|---|---|---|---|---|
| BMW | 525d | 2.5 (2497ccm) Diesel | M51D256T1 | E39 | 1998 - 2003 | ||
| BMW | 525d | 2.5 (2497ccm) Diesel | M51D256T1 | E39 | Touring | 1997 - 2004 | |
| BMW | 525d | 2.5 (2497ccm) Diesel | M51D256T1 | E39 | 1997 - 2003 | ||
| BMW | 725d | 2.5 (2497ccm) Diesel | M51D256T1 | E38 | 1996 - 2000 |
Description
A1842 Replacement Alternator
Start your A1842 alternator comparison with the linked Lucas reference LRA01842 and the specifications shown on this page. The listed electrical rating is 12V 140A. An alternator maintains battery charge and supplies electrical power while the engine runs. Applications include selected BMW 525d 2.5 Diesel variants.
Key Features and Benefits
- 12V electrical system: match the vehicle voltage before selecting a unit.
- 140A output: compare the listed rating with the original alternator.
- 5-groove pulley: check belt profile and alignment against the existing unit.
- 2 mounting holes: compare the fixing pattern and unit position.
- M8 B+ terminal: check the connection against the original unit.
Compatible Vehicles and Applications
- BMW 525d 2.5 Diesel – selected applications 1998–2003 (engine code M51D256T1).
- BMW 725d 2.5 Diesel – selected applications 1996–2000 (engine code M51D256T1).
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 A1842. Compare them with the original unit and technical specifications; a number match alone does not establish vehicle compatibility.
123515007, 986039730, LRA01842, LRA1842, DRA9730
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 A1842 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 A1842 fit my BMW 525d?
BMW 525d 2.5 Diesel (1998–2003) is a listed application. Confirm the engine code and original unit configuration in the detailed fitment table.
Does A1842 replace Lucas LRA01842?
Lucas LRA01842 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 A1842?
The listed details include 12V, 140A output, 5 pulley grooves. Compare the complete specifications on this page with the unit being replaced.
Is A1842 new or remanufactured?
Check the current product condition selection for A1842. Confirm the supplier and availability of the option you want before completing the order.
What should I compare before ordering A1842?
Compare 12V compatibility, 140A 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.
