A1780 12V 55A Alternator Fits Ford Sierra, Ford Sierra Sapphire
Price range: £91.37 through £117.83
Identify a replacement alternator using Sahibs A1780, listed at 12V 55A. Listed applications include selected Ford Sierra, Ford Sierra Sapphire models. Identification references include Lucas LRA01780, Bosch 120489477, Ford 87BB10300AA. Its listed 12V 55A 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 A1780 replacement alternator online from Sahibs Auto Electrics for UK delivery or Click & Collect.
Product Specification
| Description | Value |
|---|---|
| AMP | 55 A |
| Volt | 12 V |
| No. of Grooves | 5 qty |
| Pulley Diameter | 80 mm |
| Mounting holes | 2 qty |
| B+ | M6 |
| Insulated Return | No |
| Water cooled | No |
| Vacuum pump | No |
| Start/Stop | No |
| Weight | 4.89 Kg |
Cross Reference
| Reference Number | Brand |
|---|---|
| DYA1780 | Dyno Electrics |
| 120489477 | Bosch |
| 120489478 | Bosch |
| 986036080 | Bosch Exchange |
| 111519 | HC-Cargo |
| 595009055 | PSH |
| 87BB10300AA | Ford |
| 87BB10300AB | Ford |
| 87BBAB | Ford |
| 87BX10300AB | Ford |
| 87BXAB | Ford |
| ALT10475 | Wood Auto |
| B120402250 | Bosch |
| CA620IR | HC-Parts |
| LRA01780 | Lucas |
| LRA1780 | Lucas |
| WOOALT10475 | Wood Auto |
Vehicle Applications
| Brand | Model | Engine | Engine Code | Series | Model Type | Type | Year |
|---|---|---|---|---|---|---|---|
| FORD | Sierra | 1.8 (1769ccm) Petrol | R2C/R6A | MK II | BFG | 1988 - 1993 | |
| FORD | Sierra | 1.8 (1769ccm) Petrol | R2C/R6A | MK II | BAG | 1988 - 1993 | |
| FORD | Sierra | 1.8 (1796ccm) Petrol | TL18LRED | MK II | BAG | 1988 - 1988 | |
| FORD | Sierra | 1.8 (1796ccm) Petrol | TL18LRED | MK II | BFG | 1987 - 1988 | |
| FORD | Sierra | 1.8 (1796ccm) Petrol | R2A/RED | MK II | BFG | 1988 - 1988 | |
| FORD | Sierra Sapphire | 1.8 (1769ccm) Petrol | R2C/R6A | MK II | BFG | 1991 - 1993 | |
| FORD | Sierra Sapphire | 1.8 (1796ccm) Petrol | R2A/RED | MK II | BFG | 1988 - 1988 |
Description
A1780 Replacement Alternator
The Sahibs A1780 alternator is associated with Lucas reference LRA01780 for replacement identification. The listed electrical rating is 12V 55A. An alternator maintains battery charge and supplies electrical power while the engine runs. Applications include selected Ford Sierra 1.8 Petrol variants.
Key Features and Benefits
- 12V electrical system: match the vehicle voltage before selecting a unit.
- 55A 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.
- M6 B+ terminal: check the connection against the original unit.
Compatible Vehicles and Applications
- Ford Sierra 1.8 Petrol – selected applications 1988–1993 (engine code R2C/R6A).
- Ford Sierra Sapphire 1.8 Petrol – selected applications 1991–1993 (engine code R2C/R6A).
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 A1780. Compare them with the original unit and technical specifications; a number match alone does not establish vehicle compatibility.
120489477, 120489478, 986036080, B120402250, LRA01780, LRA1780, 87BB10300AA, 87BB10300AB, 87BBAB, 87BX10300AB, 87BXAB
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 A1780 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 A1780 fit my Ford Sierra?
Ford Sierra 1.8 Petrol (1988–1993) is a listed application. Confirm the engine code and original unit configuration in the detailed fitment table.
Does A1780 replace Lucas LRA01780?
Lucas LRA01780 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 A1780?
The listed details include 12V, 55A output, 5 pulley grooves. Compare the complete specifications on this page with the unit being replaced.
Is A1780 new or remanufactured?
Check the current product condition selection for A1780. Confirm the supplier and availability of the option you want before completing the order.
What should I compare before ordering A1780?
Compare 12V compatibility, 55A 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.
