MPA Electrical 11340N Alternator

Alternator for Nissan and INFINITI Applications

MPA Electrical 11340N is a 12-volt, 150-amp alternator built for select Nissan and INFINITI vehicles. It uses an internal regulator, internal fan, clockwise rotation, and a 7-groove serpentine pulley for direct-fit charging system service.

Key Features

• 150 amps output for stable charging performance
• 12-volt electrical system design
• Internal regulator for integrated voltage control
• Internal fan for alternator cooling
• 7-groove serpentine pulley
• Clockwise rotation
• Clock position: 10:00
• MPA Electrical part number 11340N

Detailed Product Information

This MPA Electrical alternator is specified for a range of Nissan 350Z and 370Z models, along with multiple INFINITI applications including G35, G37, Q50, Q60, Q70, Q70L, QX50, QX70, EX35, EX37, FX35, FX37, M35, and M37. The 150-amp output supports the vehicle’s charging demands, while the internal regulator helps maintain system voltage through normal driving conditions. If you are replacing a worn charging unit on a Nissan 370Z or INFINITI G37, 11340N provides the core electrical and pulley specifications needed for proper fitment.

This part cross-references A3TJ1991 and 23100-3FY1A for the same application.

What It Is Used For

• Charging system failure diagnosis after low-voltage warnings
• Battery drain caused by a weak or inconsistent alternator
• Dim lights or electrical accessories operating below normal output
• Noise or charging irregularities from a worn alternator assembly
• Replacement of a unit with the wrong pulley or regulator configuration

Installation Notes and Tips

Verify pulley groove count, rotation direction, and clock position before installation. Confirm the vehicle uses a 12-volt system and matches the listed fitment for your exact year and model. Inspect the drive belt, battery condition, and charging connections during replacement to help ensure proper system operation.

Quality Assurance

MPA Electrical supplies new replacement electrical components for automotive charging and starting systems. Part number 11340N is built to the listed specifications for fitment-focused replacement service.