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WAI 6643N Starter
| Brand | WAI 6643N |
|---|---|
| 12 | 12 |
| Design | Permanent magnet gear reduction |
| Family | Ford |
| Power Rating | 1.5 |
| Starter Rotation | Counterclockwise (left) |
| Tooth Quantity | 22 |
| Mounting Type | Pad |
| Fits | Ford and Mercury · 11 vehicles |
100% new unit. Not remanufactured, with proprietary components and processes.
Permanent magnet gear reduction. Delivers efficient starting power in a compact design.
Pad mount starter. Built for straightforward installation and reliable engagement.
Cross-references AMS Automotive 6643, 1F1U-11000-AA and 1F1U-AA for the same application. See all 5.
WAI 6643N Starter for Ford, Mercury, and Lincoln
The WAI 6643N is a 100% new starter built for vehicles that need reliable cranking power and consistent amp output. This permanent magnet gear reduction starter is engineered for direct-fit replacement in select Ford, Mercury, and Lincoln applications, including Ford Taurus and Mercury Sable models.
Key Features
- Part number: 6643N
- Brand line: WAI New
- 100% new starter, not remanufactured
- Permanent magnet gear reduction design
- 1.5 kW power rating
- 12-volt electrical system
- Counterclockwise (left) rotation
- 22-tooth drive
- Pad mounting type
- Fits Ford-family applications
Detailed Description
WAI starters are built with proprietary components and manufacturing processes to support long service life and dependable performance. The 6643N starter uses a permanent magnet gear reduction design to deliver the output needed for modern starting systems, while its 12-volt, 1.5 kW configuration matches the requirements of the listed vehicles. This starter is a direct replacement for select 2001-2005 Ford Taurus and 2001-2005 Mercury Sable applications, and it also fits the 1991-1994 Lincoln Continental and 2001 Ford Sable Mexico application. If you are searching for a Ford Taurus starter, Mercury Sable starter, or Lincoln Continental starter, the WAI 6643N is built for those exact fitments. This part cross-references AMS Automotive 6643 for the same application.
What This Starter Helps Solve
- Slow or weak engine cranking
- No-start conditions caused by starter failure
- Intermittent starting performance
- Starter noise related to worn internal components
- Electrical starting issues in the listed Ford, Mercury, and Lincoln vehicles
Installation Notes and Tips
Verify the vehicle year, make, model, and engine-starting configuration before installation. Confirm the starter rotation is counterclockwise (left), the mounting style is pad mount, and the drive has 22 teeth to match the original application. Compare the existing unit to part number 6643N and the OE references before installation to ensure proper fitment on your Ford Taurus, Mercury Sable, or Lincoln Continental.
Quality Assurance
WAI New starters are manufactured as new units and built with proprietary components and processes to support maximum life and performance in the applications listed.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Ford | Taurus | 3.0L | V6 | N/A | — |
| 2005 | Mercury | Sable | 3.0L | V6 | N/A | — |
| 2004 | Ford | Taurus | 3.0L | V6 | N/A | — |
| 2004 | Mercury | Sable | 3.0L | V6 | N/A | — |
| 2003 | Ford | Taurus | 3.0L | V6 | N/A | — |
| 2003 | Mercury | Sable | 3.0L | V6 | N/A | — |
| 2002 | Ford | Taurus | 3.0L | V6 | N/A | — |
| 2002 | Mercury | Sable | 3.0L | V6 | N/A | — |
| 2001 | Ford | Sable | — | — | N/A | Mexico |
| 2001 | Ford | Taurus | 3.0L | V6 | N/A | — |
| 2001 | Mercury | Sable | 3.0L | V6 | N/A | — |
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