A4457 12V 180A Alternator Fits Lexus GS 200t, Lexus GS 300
Price range: £160.00 through £256.00
The A4457 12V 180A Alternator is a replacement charging unit from Sahibs Auto Electrics. Listed applications include selected Lexus GS 200t, Lexus GS 300, Lexus IS 200t, Lexus IS 300 models. Identification references include Lucas LRA04457. Its listed 12V 180A rating provides an electrical matching point for your existing unit. Compare the pulley, connections and mounting arrangement with your existing alternator. Check the current condition options and availability before purchase. Match the exact engine and production details before ordering. Buy your A4457 replacement alternator online from Sahibs Auto Electrics for UK delivery or Click & Collect.
Product Specification
| Description | Value |
|---|---|
| AMP | 180 A |
| Volt | 12 V |
| Insulated Return | No |
| Water cooled | No |
| Vacuum pump | No |
| Start/Stop | No |
| Weight | 7.55 Kg |
Cross Reference
| Reference Number | Brand |
|---|---|
| DYA4457 | Dyno Electrics |
Vehicle Applications
| Brand | Model | Engine | Engine Code | Series | Model Type | Type | Year |
|---|---|---|---|---|---|---|---|
| LEXUS | GS 200t | 2.0 (1998ccm) Petrol | 8ARFTS | ARL10 | 2015 - 2017 | ||
| LEXUS | GS 300 | 2.0 (1998ccm) Petrol | 8ARFTS | ARL10 | 2017 - | ||
| LEXUS | IS 200t | 2.0 (1998ccm) Petrol | 8ARFTS | MK III | ASE30 | 2015 - 2016 | |
| LEXUS | IS 300 | 2.0 (1998ccm) Petrol | 8ARFTS | MK III | ASE30 | 2017 - 2020 | |
| LEXUS | RC 200t | 2.0 (1998ccm) Petrol | 8ARFTS | ASC10 | 2015 - 2017 | ||
| LEXUS | RC 300 | 2.0 (1998ccm) Petrol | 8ARFTS | ASC10 | 2017 - |
Description
A4457 Replacement Alternator
The A4457 alternator is a replacement unit identified by Lucas reference LRA04457. The listed electrical rating is 12V 180A. An alternator maintains battery charge and supplies electrical power while the engine runs. Applications include selected Lexus GS 200t 2.0 Petrol variants.
Key Features and Benefits
- 12V electrical system: match the vehicle voltage before selecting a unit.
- 180A output: compare the listed rating with the original alternator.
- Lucas LRA04457 reference: a starting point for identifying the replacement.
- SKU A4457: use this code when requesting parts support.
Compatible Vehicles and Applications
- Lexus GS 200t 2.0 Petrol – selected applications 2015–2017 (engine code 8ARFTS).
- Lexus GS 300 2.0 Petrol – selected applications 2017 – (engine code 8ARFTS).
- Lexus IS 200t 2.0 Petrol – selected applications 2015–2016 (engine code 8ARFTS).
- Lexus IS 300 2.0 Petrol – selected applications 2017–2020 (engine code 8ARFTS).
- Lexus RC 200t 2.0 Petrol – selected applications 2015–2017 (engine code 8ARFTS).
- Lexus RC 300 2.0 Petrol – selected applications 2017 – (engine code 8ARFTS).
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 A4457. Compare them with the original unit and technical specifications; a number match alone does not establish vehicle compatibility.
LRA04457
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 A4457 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 A4457 fit my Lexus GS 200t?
Lexus GS 200t 2.0 Petrol (2015–2017) is a listed application. Confirm the engine code and original unit configuration in the detailed fitment table.
Does A4457 replace Lucas LRA04457?
Lucas LRA04457 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 A4457?
The listed details include 12V, 180A output. Compare the complete specifications on this page with the unit being replaced.
Is A4457 new or remanufactured?
Check the current product condition selection for A4457. Confirm the supplier and availability of the option you want before completing the order.
What should I compare before ordering A4457?
Compare 12V compatibility, 180A 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.
