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WAI 17791N Starter
Reliable Starter for Lexus and Toyota Vehicles
The WAI 17791N starter is engineered to provide dependable starting power for select Lexus and Toyota models. Designed with an offset gear reduction system, this starter ensures efficient engine cranking and consistent performance for vehicles like the Lexus GX470 and Toyota Tundra.
Key Features of the WAI 17791N Starter
- Offset gear reduction design for improved torque and efficiency
- Compatible with Lexus and Toyota models including 4Runner, GX470, Sequoia, and Tundra
- Clockwise (right) starter rotation for precise fitment
- 9-tooth pinion gear for smooth engagement
- Flange mounting type for secure installation
- Power rating of 1.4 kW suitable for heavy-duty starting requirements
- Part number 17791N ensures exact replacement
Detailed Description of the WAI 17791N Starter
This WAI starter, part number 17791N, features an offset gear reduction design that enhances torque output while reducing the load on the vehicle’s electrical system. The 9-tooth pinion gear meshes precisely with the engine flywheel, providing reliable engagement and minimizing wear. With a clockwise (right) rotation and flange mounting type, this starter is engineered to match the original equipment specifications for Lexus and Toyota models such as the 4Runner, GX470, Sequoia, and Tundra. The 1.4 kW power rating supports consistent engine starts under various conditions.
Common Applications and Issues Addressed
- Replacement for worn or failing starters in Lexus GX470 and Toyota Tundra
- Resolves slow or inconsistent engine cranking
- Eliminates starter noise caused by gear misalignment
- Addresses starter motor failure due to electrical or mechanical wear
- Improves starting reliability in off-road and heavy-duty use vehicles
Installation Notes and Tips
Ensure the vehicle battery is fully charged before installation to avoid electrical issues. Verify the starter rotation direction and tooth count match the original part. The flange mounting type requires proper alignment to secure the starter firmly to the engine block. It is recommended to inspect the flywheel teeth for damage during replacement to ensure optimal engagement.
Quality Assurance and Warranty
WAI starters are manufactured to meet strict quality standards and are designed for durability and reliable performance. The 17791N starter is tested for fit, form, and function to ensure compatibility with specified Lexus and Toyota models. Please refer to WAI’s warranty policy for coverage details.
| Brand | WAI |
| Part Number | 17791N |
| 12 | 12 |
| Design | Offset gear reduction |
| Family | Denso |
| Power Rating | 1.4 |
| Starter Rotation | Clockwise (right) |
| Tooth Quantity | 9 |
| Mounting Type | Flange |
This part fits 24 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2009 | Toyota | 4Runner | 4.7L | V8 | N/A | Std, 1.4kw |
| 2009 | Toyota | Tundra | 4.7L | V8 | N/A | Std, 1.4kw |
| 2008 | Toyota | 4Runner | 4.7L | V8 | N/A | Std, 1.4kw |
| 2008 | Toyota | Tundra | 4.7L | V8 | N/A | Std, 1.4kw |
| 2007 | Toyota | 4Runner | 4.7L | V8 | N/A | Std, 1.4kw |
| 2007 | Toyota | Tundra | 4.7L | V8 | N/A | Std, 1.4kw |
| 2006 | Toyota | 4Runner | 4.7L | V8 | N/A | Std, 1.4kw |
| 2006 | Toyota | Tundra | 4.7L | V8 | N/A | Std, 1.4kw |
| 2005 | Toyota | 4Runner | 4.7L | V8 | N/A | Std, 1.4kw |
| 2005 | Toyota | Sequoia | N/A | Std, 1.4kw | ||
| 2005 | Toyota | Tundra | 4.7L | V8 | N/A | Std, 1.4kw |
| 2004 | Lexus | GX470 | N/A | Std, 1.4kw | ||
| 2004 | Toyota | 4Runner | 4.7L | V8 | N/A | Std, 1.4kw |
| 2004 | Toyota | Sequoia | N/A | Std, 1.4kw | ||
| 2004 | Toyota | Tundra | 4.7L | V8 | N/A | Std, 1.4kw |
| 2003 | Lexus | GX470 | N/A | Std, 1.4kw | ||
| 2003 | Toyota | 4Runner | 4.7L | V8 | N/A | Std, 1.4kw |
| 2003 | Toyota | Sequoia | N/A | Std, 1.4kw | ||
| 2003 | Toyota | Tundra | 4.7L | V8 | N/A | Std, 1.4kw |
| 2002 | Toyota | Sequoia | N/A | Std, 1.4kw | ||
| 2002 | Toyota | Tundra | 4.7L | V8 | N/A | Std, 1.4kw |
| 2001 | Toyota | Sequoia | N/A | Std, 1.4kw | ||
| 2001 | Toyota | Tundra | 4.7L | V8 | N/A | Std, 1.4kw |
| 2000 | Toyota | Tundra | 4.7L | V8 | N/A | Std, 1.4kw |
* 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.