MPA Electrical 10340 Alternator

Remanufactured Alternator for Lexus Charging Systems

MPA Electrical 10340 is a remanufactured 12-volt alternator built for OE fit, form, and function. It is engineered for Lexus charging-system service where a direct replacement is needed for consistent output and proper electrical integration.

This alternator is part of MPA Electrical’s remanufactured line, which combines OE-style fitment with modern remanufacturing and testing processes. The result is a replacement alternator for Lexus IS300, IS350, RC300, RC350, and GS350 applications that matches the original design requirements.

Key Features

• Remanufactured 12.0V alternator for OE-style replacement
• Internal fan and internal voltage regulator
• Clockwise (right) rotation
• 6-groove pulley with serpentine belt type
• Pulley included with decoupled or clutch pulley design
• Nippondenso family construction
• 4 o’clock rear-view main mounting ear plug clock position

Detailed Description

MPA Electrical part number 10340 is a remanufactured alternator for Lexus charging and starting systems. It is built to match OE fit, form, and function, with testing and remanufacturing processes used to verify electrical performance before installation. This alternator cross-references Toyota/Lexus OE part number 27060-31300 for the same application. Use 10340 when replacing a worn or failing alternator on 2018-2025 Lexus IS300, 2018-2025 Lexus IS350, 2018-2024 Lexus RC300, 2018-2024 Lexus RC350, and 2016-2020 Lexus GS350 models.

What It Helps Solve

• Battery warning light caused by alternator output loss
• Low charging voltage during driving or idle
• Dim lights or electrical instability from weak charging performance
• Noise or pulley-related charging system issues
• Starting problems linked to insufficient battery recharge

Installation Notes and Tips

Verify the vehicle’s alternator connector orientation, mounting ear layout, pulley type, and belt configuration before installation. Confirm clockwise rotation, 6-groove serpentine pulley setup, and decoupled/clutch pulley design match the original unit. For best results, inspect the battery, belt condition, and charging circuit connections during replacement. Part number 10340 should be matched to the vehicle’s OE specification before installation.

Quality Assurance

MPA Electrical remanufactured alternators are processed to OE-style standards and tested to confirm proper operation before release. The remanufacturing approach is intended to restore dependable charging performance for Lexus applications while maintaining original equipment fitment requirements.