Bosch AL3391X Alternator

Reliable Alternator Replacement for Lexus Vehicles

The Bosch AL3391X Alternator (Remanufactured) is designed to provide dependable electrical charging performance for select Lexus models. Engineered to meet OEM specifications, this 12-volt alternator ensures consistent power delivery and efficient operation for your vehicle's electrical system.

• Voltage: 12V for standard automotive electrical systems
• Amperage Rating: 150 amps to support high electrical loads
• Rotation Direction: Clockwise for proper fit and function
• Fan Type: Internal cooling fan for efficient heat dissipation
• Pulley Included: Yes, with 7 grooves compatible with 7s-dp belt type
• Outside Pulley Diameter: 52 mm for accurate belt alignment
• Case Material and Color: Durable aluminum in natural finish
• Regulator Type: Internal voltage regulator for simplified installation
• Plug Clock Rear View Main Mounting Ear at 6 O’Clock for precise mounting
• Remanufactured unit ensuring quality and cost-effectiveness

About the Bosch Alternator (Remanufactured) Product Line

The Bosch Alternator (Remanufactured) line offers remanufactured alternators that meet strict quality standards to restore vehicle charging systems. These units are rebuilt using original components and tested to ensure reliable performance. The AL3391X is part of this line, providing a cost-effective alternative to new alternators without compromising on durability or function.

Detailed Product Description

This Bosch AL3391X alternator is specifically designed for compatibility with Lexus GS350, IS250, IS300, IS350, RC300, and RC350 models. Featuring a 150-amp output, it supports the electrical demands of modern vehicles, including lighting, ignition, and accessory systems. The internal fan design helps maintain optimal operating temperatures, while the internal voltage regulator simplifies installation and reduces potential points of failure. The included pulley with 7 grooves matches the 7s-dp belt type, ensuring proper belt engagement and longevity. The aluminum case provides strength and corrosion resistance, contributing to the alternator's overall durability.

Common Issues Addressed by This Alternator

• Battery not charging or slow charging
• Dim or flickering headlights and interior lights
• Electrical system warning lights on the dashboard
• Unusual noises from the engine bay related to the charging system
• Vehicle stalling or difficulty starting due to insufficient electrical power

Installation Notes and Tips

When installing the Bosch AL3391X alternator, ensure the clockwise rotation direction matches your vehicle’s requirements. Verify the mounting ear position at 6 o’clock for proper alignment. Confirm the pulley groove count and belt type compatibility (7 grooves, 7s-dp belt) to avoid belt slippage. It is recommended to inspect the battery and wiring connections during installation to ensure optimal charging system performance.

Quality Assurance and Warranty

This remanufactured alternator undergoes rigorous testing to meet Bosch quality standards. While specific warranty details may vary, Bosch typically offers a limited warranty on remanufactured alternators to cover defects in materials and workmanship. Refer to the product documentation or supplier for exact warranty terms.