A4277 12V 200A Alternator Fits Aston Martin DB9, Aston Martin ONE-77
Price range: £180.00 through £288.00
Identify a replacement alternator using Sahibs A4277, listed at 12V 200A. Listed applications include selected Aston Martin DB9, Aston Martin ONE-77, Aston Martin Rapide, Aston Martin Rapide S models. Identification references include Lucas LRA04277, Denso 1042106210. Its listed 12V 200A 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 A4277 replacement alternator online from Sahibs Auto Electrics for UK delivery or Click & Collect.
Product Specification
| Description | Value |
|---|---|
| AMP | 200 A |
| Volt | 12 V |
| No. of Grooves | 6 qty |
| Pulley Diameter | 59 mm |
| Mounting holes | 3 qty |
| B+ | M8 |
| Insulated Return | No |
| Water cooled | No |
| Vacuum pump | No |
| Start/Stop | No |
| Weight | 7.44 Kg |
Cross Reference
| Reference Number | Brand |
|---|---|
| DYA4277 | Dyno Electrics |
| 1042106210 | Denso |
| 845519150 | PSH |
| 8D3310300AA | Aston Martin |
| LRA04277 | Lucas |
| LRA4277 | Lucas |
| TNA133 | TWA |
Vehicle Applications
| Brand | Model | Engine | Engine Code | Series | Model Type | Type | Year |
|---|---|---|---|---|---|---|---|
| ASTON MARTIN | DB9 | 5.9 (5935ccm) Petrol | AM3 | Vantage | R1A22 | 2008 - 2013 | |
| ASTON MARTIN | DB9 | 5.9 (5935ccm) Petrol | AM11 | Vantage | R1A22 | 2012 - | |
| ASTON MARTIN | DB9 | 5.9 (5935ccm) Petrol | AM11 | Vantage | R1A22 | 2016 - | |
| ASTON MARTIN | ONE-77 | 7.3 (7312ccm) Petrol | AM21 | 2S | 2010 - 2012 | ||
| ASTON MARTIN | Rapide | 5.9 (5935ccm) Petrol | AM16 | AMR | 2010 - 2013 | ||
| ASTON MARTIN | Rapide S | 5.9 (5935ccm) Petrol | AM11 | AMR | 2013 - | ||
| ASTON MARTIN | Vanquish | 5.9 (5935ccm) Petrol | AM11 | AM310 | 2012 - | ||
| ASTON MARTIN | Vanquish | 5.9 (5935ccm) Petrol | AM29 | AM310 | 2014 - | ||
| ASTON MARTIN | Virage | 5.9 (5935ccm) Petrol | AM25 | Volante | AMV | 2011 - 2012 | |
| ASTON MARTIN | Virage | 5.9 (5935ccm) Petrol | AM25 | Vantage | AMV | 2011 - 2012 |
Description
A4277 Replacement Alternator
The A4277 alternator is a replacement unit identified by Lucas reference LRA04277. The listed electrical rating is 12V 200A. An alternator maintains battery charge and supplies electrical power while the engine runs. Applications include selected Aston Martin DB9 5.9 Petrol variants.
Key Features and Benefits
- 12V electrical system: match the vehicle voltage before selecting a unit.
- 200A 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
- Aston Martin DB9 5.9 Petrol – selected applications 2008–2013 (engine code AM3).
- Aston Martin ONE-77 7.3 Petrol – selected applications 2010–2012 (engine code AM21).
- Aston Martin Rapide 5.9 Petrol – selected applications 2010–2013 (engine code AM16).
- Aston Martin Rapide S 5.9 Petrol – selected applications 2013 – (engine code AM11).
- Aston Martin Vanquish 5.9 Petrol – selected applications 2012 – (engine code AM11).
- Aston Martin Virage 5.9 Petrol – selected applications 2011–2012 (engine code AM25).
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 A4277. Compare them with the original unit and technical specifications; a number match alone does not establish vehicle compatibility.
1042106210, LRA04277, LRA4277
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 A4277 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 A4277 fit my Aston Martin DB9?
Aston Martin DB9 5.9 Petrol (2008–2013) is a listed application. Confirm the engine code and original unit configuration in the detailed fitment table.
Does A4277 replace Lucas LRA04277?
Lucas LRA04277 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 A4277?
The listed details include 12V, 200A output, 6 pulley grooves. Compare the complete specifications on this page with the unit being replaced.
Is A4277 new or remanufactured?
Check the current product condition selection for A4277. Confirm the supplier and availability of the option you want before completing the order.
What should I compare before ordering A4277?
Compare 12V compatibility, 200A 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.
