There isn't one universal part number for the IS 350's alternator; the exact OEM number varies by revision and market.
The 2006 IS 350 uses a Denso-supplied alternator for the 2GR-FSE engine, and replacement parts should be confirmed against the VIN. Details such as the stamping on the alternator housing or the catalog entry will determine the correct P/N.
How to identify the exact part number
To locate the precise OEM part number for your IS 350, follow these steps:
- Obtain the vehicle’s VIN (Vehicle Identification Number) from the driver’s side dashboard or door jamb, then use it to pull up the exact Lexus/Toyota parts catalog entry for your car.
- Inspect the current alternator for stamped identifiers on the housing, which often include the manufacturer's code (Denso) and an internal part number that can be cross-referenced with official catalogs.
- Cross-check the engine code and model year (2GR-FSE, 2006) in an official parts catalog or with a Lexus dealer to confirm compatible P/N variations.
- Consult a dealership, authorized parts retailer, or a professional mechanic if you’re uncertain, providing the VIN or the current alternator’s stamping to verify the exact replacement part.
Following these steps will help you confirm the exact OEM alternator part number for your 2006 IS 350.
OEM vs aftermarket: what to know
When replacing an alternator, consider how the choice will affect fit, warranty, and reliability. The following factors can influence your decision between OEM, remanufactured, and aftermarket options:
- OEM vs aftermarket availability and price
- Remanufactured units versus new OEM units
- Warranty terms and return policies
- Compatibility with the 2GR-FSE engine and electrical system
Carefully weighing these considerations helps ensure you get a replacement that fits properly and lasts as long as possible.
Where to buy and how to verify compatibility
To buy the correct alternator, use official sources and verify compatibility with your VIN and engine code. Start with:
- Lexus or Toyota official parts catalogs and dealership parts desks
- Reputable auto parts retailers that allow VIN-based searches
- Cross-referencing the current alternator’s stamped numbers with catalog entries
Always confirm the part number with the seller before purchase, especially if you’re ordering online or opting for a remanufactured unit.
Summary
For a 2006 Lexus IS 350, there is no single universal alternator part number. The correct OEM P/N depends on production revision and regional market. The most reliable method to identify the exact number is to use the VIN to pull the official catalog entry, inspect the existing alternator for stamped identifiers, and verify with a dealer or trusted retailer. This approach helps ensure you get a compatible, correctly rated unit for the 2GR-FSE engine.
What is the alternator part number for a 2006 Lexus IS250?
ALTERNATOR 2706031062. LEXUS IS250 06-09.
What is the alternator part number for a 2006 Lexus IS 350?
27060-31062-84
27060-31062-84 - Alternator - 2006-2013 Lexus | My L Parts.
How much is an alternator for a Lexus IS350?
The average cost for a Lexus IS350 Alternator Replacement is between $746 and $864. Labor costs are estimated between $253 and $371 while parts are typically priced around $493. This range does not include taxes and fees, and does not factor in your unique location.
How to find alternator part number?
Identify the alternator housing, which is the main body of the alternator. The rectangular silver label is usually affixed to the side of the housing, facing outward for easy visibility. The label features the American Power Systems logo on the left side. The part number is located at the top right of the label.