OE Quality
60-Day Returns

MPA Electrical 15645N Alternator
Reliable Alternator for Nissan D21 Pickup Vehicles
The MPA Electrical New 15645N alternator is designed specifically for Nissan D21 and Pickup models, providing consistent 12-volt electrical output. Engineered to meet the demands of your vehicle's charging system, this alternator ensures stable power delivery and efficient operation.
- 12.0 Volt output suitable for Nissan D21 and Pickup
- Internal fan type for effective cooling
- Clockwise (right) rotation direction
- Includes a single-groove V-belt pulley
- Internal voltage regulator for reliable performance
- Mounting ear positioned at 6 o'clock for proper fitment
- Amperage rating of 60 amps to support vehicle electrical needs
- Part of the Hitachi family of components
About the MPA Electrical New Product Line
The New product line from MPA Electrical focuses on delivering updated and reliable electrical components tailored for specific vehicle applications. The 15645N alternator reflects this approach by combining precise fitment with quality internal components, ensuring compatibility and durability for Nissan D21 and Pickup models.
Detailed Alternator Features and Specifications
This alternator operates at 12 volts with a 60-amp output, suitable for maintaining the electrical system of Nissan D21 and Pickup vehicles. It features an internal fan type that helps dissipate heat during operation, enhancing longevity. The pulley included is designed with a single groove compatible with V-belts, and the rotation direction is clockwise (right), matching OEM specifications. The internal voltage regulator simplifies installation and reduces the need for external components. The mounting ear is positioned at 6 o'clock, ensuring proper alignment and secure attachment.
Common Applications and Problem Resolution
- Replaces faulty or worn alternators in Nissan D21 and Pickup models
- Resolves issues with battery not charging properly
- Eliminates electrical system failures due to alternator malfunction
- Addresses overheating problems with internal fan cooling
- Restores proper belt alignment with included pulley
Installation Notes and Tips
Ensure the alternator is mounted with the rear view plug clock positioned at 6 o'clock for correct fitment. Verify the V-belt is compatible with the single-groove pulley included. Confirm the rotation direction is clockwise to match the vehicle’s original setup. Since the voltage regulator is internal, no additional regulator installation is necessary. Follow vehicle-specific service manual instructions for safe and proper installation.
Quality Assurance and Warranty Information
MPA Electrical alternators are manufactured to meet industry standards and undergo quality control testing to ensure reliable performance. The 15645N alternator is part of the Hitachi family, known for durable electrical components. Warranty details should be confirmed with the distributor or manufacturer to ensure coverage terms.
| Brand | MPA Electrical |
| Part Number | 15645N |
| Position | New |
| Voltage | 12.0 |
| Plug Clock Rear View Main Mounting Ear at 6 O Clock | 1 |
| Fan Type | Internal |
| Rotation Direction | Clockwise (right) |
| Pulley Included | Yes |
| Family | Hitachi |
| Pulley Groove Quantity | 1 |
| Pulley Belt Type | V-belt |
| Regulator Type | Internal |
| Decoupled Or Clutch Pulley | No |
| Amperage Rating | 60.0 |
This part fits 7 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1993 | Nissan | D21 | 2.4L | L4 | N/A | New |
| 1993 | Nissan | Pickup | 2.4L | L4 | N/A | New |
| 1992 | Nissan | D21 | 2.4L | L4 | N/A | New |
| 1992 | Nissan | Pickup | 2.4L | L4 | N/A | New |
| 1991 | Nissan | D21 | 2.4L | L4 | N/A | New |
| 1991 | Nissan | Pickup | 2.4L | L4 | N/A | New |
| 1990 | Nissan | D21 | 2.4L | L4 | N/A | New |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.