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WAI 11391N Alternator
Reliable Alternator for Acura and Honda Vehicles
The WAI 11391N alternator is designed to provide consistent electrical charging and starting performance for select Acura and Honda models. Engineered with an internal fan and regulator, this alternator supports efficient operation and durability in your vehicle's electrical system.
- 12-volt electrical system compatibility
- Internal fan type for effective cooling
- Clockwise (right) rotation direction
- Includes a 6-groove serpentine pulley
- Internal voltage regulator for stable output
- 130 ampere rating suitable for demanding electrical loads
- Compatible with Denso family components
Technical Details and Features
The WAI 11391N alternator features an internal fan that helps maintain optimal operating temperatures, reducing the risk of overheating during extended use. Its clockwise rotation direction matches the original equipment specifications for proper fitment and function. The included pulley has six grooves designed for serpentine belts, ensuring secure and efficient power transfer. With an internal voltage regulator, this alternator maintains consistent voltage output to protect your vehicle's electrical components. Rated at 130 amps, it supports the electrical demands of modern Acura and Honda vehicles without the need for a decoupled or clutch pulley.
Compatible Vehicles and Applications
This alternator is compatible with a range of Acura and Honda models, including:
- Acura TL, RL, MDX, ZDX, and TSX
- Honda Accord, Accord Crosstour, Odyssey, Pilot, and Ridgeline
It is designed to replace original equipment alternators in these vehicles, ensuring reliable charging and starting performance.
Common Issues Addressed by the WAI 11391N Alternator
- Intermittent or complete loss of electrical charging
- Battery warning light illumination on the dashboard
- Dim or flickering headlights and interior lights
- Difficulty starting the engine or frequent stalling
- Electrical system malfunctions due to voltage irregularities
Installation Notes and Tips
When installing the WAI 11391N alternator, ensure the serpentine belt is properly aligned with the 6-groove pulley to prevent slippage. Verify the clockwise rotation direction matches your vehicle’s original alternator. Since this alternator includes an internal voltage regulator, external regulators are not required. It is recommended to test the electrical system after installation to confirm proper charging output and functionality.
Quality Assurance and Warranty
WAI alternators are manufactured to meet or exceed OEM specifications, providing dependable performance for Acura and Honda vehicles. The 11391N part number is backed by WAI’s quality standards, though specific warranty details should be confirmed at the time of purchase.
| Brand | WAI |
| Part Number | 11391N |
| 12 | 12 |
| Fan Type | Internal |
| Rotation Direction | Clockwise (right) |
| Pulley Included | Yes |
| Family | Denso |
| Pulley Groove Quantity | 6 |
| Pulley Belt Type | Serpentine |
| Regulator Type | Internal |
| Decoupled Or Clutch Pulley | No |
| Amperage Rating | 130 |
This part fits 38 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2014 | Acura | TL | 3.5L | V6 | N/A | |
| 2014 | Acura | TSX | 3.5L | V6 | N/A | |
| 2013 | Acura | MDX | N/A | |||
| 2013 | Acura | TL | 3.5L | V6 | N/A | |
| 2013 | Acura | TSX | 3.5L | V6 | N/A | |
| 2013 | Acura | ZDX | N/A | |||
| 2012 | Acura | MDX | N/A | |||
| 2012 | Acura | RL | N/A | |||
| 2012 | Acura | TL | 3.5L | V6 | N/A | |
| 2012 | Acura | TSX | 3.5L | V6 | N/A | |
| 2012 | Acura | ZDX | N/A | |||
| 2012 | Honda | Accord | 3.5L | V6 | N/A | |
| 2011 | Acura | MDX | N/A | |||
| 2011 | Acura | RL | N/A | |||
| 2011 | Acura | TL | 3.5L | V6 | N/A | |
| 2011 | Acura | TSX | 3.5L | V6 | N/A | |
| 2011 | Acura | ZDX | N/A | |||
| 2011 | Honda | Accord | 3.5L | V6 | N/A | |
| 2011 | Honda | Pilot | N/A | |||
| 2011 | Honda | Ridgeline | N/A | |||
| 2010 | Acura | MDX | N/A | |||
| 2010 | Acura | RL | N/A | |||
| 2010 | Acura | TL | 3.5L | V6 | N/A | |
| 2010 | Acura | TSX | 3.5L | V6 | N/A | |
| 2010 | Acura | ZDX | N/A | |||
| 2010 | Honda | Accord | 3.5L | V6 | N/A | |
| 2010 | Honda | Accord Crosstour | N/A | |||
| 2010 | Honda | Odyssey | N/A | |||
| 2010 | Honda | Pilot | N/A | |||
| 2010 | Honda | Ridgeline | N/A | |||
| 2009 | Acura | RL | N/A | |||
| 2009 | Acura | TL | 3.5L | V6 | N/A | |
| 2009 | Honda | Accord | 3.5L | V6 | N/A | |
| 2009 | Honda | Odyssey | N/A | |||
| 2009 | Honda | Pilot | N/A | |||
| 2009 | Honda | Ridgeline | N/A | |||
| 2008 | Honda | Accord | 3.5L | V6 | N/A | |
| 2008 | Honda | Odyssey | N/A |
* 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.