WAI 6658N Starter

Starter for Ford, Lincoln, and Mercury Applications

The WAI 6658N starter is a new, direct-fit replacement built for Ford-family vehicles that need reliable cranking performance. It uses a permanent magnet gear reduction design and is engineered to deliver the amp output required by modern electrical systems.

Compatible With 2002-2010 Ford Explorer, 2007-2010 Ford Explorer Sport Trac, 2002-2010 Mercury Mountaineer, and 2003-2005 Lincoln Aviator.

• Brand: WAI
• Part Number: 6658N
• 100% new starter, not remanufactured
• Permanent magnet gear reduction design
• 1.5 kW power rating
• Clockwise (right) starter rotation
• 12-tooth drive
• Flange mounting type
• Ford family application coverage

Detailed Product Overview

WAI builds the 6658N as a new starter assembly using proprietary components and manufacturing processes to support long service life and consistent performance. The 12-tooth, clockwise-rotation unit is specified for Ford, Lincoln, and Mercury vehicles listed in the fitment data, including the Ford Explorer, Mercury Mountaineer, and Lincoln Aviator. If you are replacing a worn starter on a 2002-2010 Ford Explorer or a 2002-2010 Mercury Mountaineer, this part number provides the correct electrical and mechanical configuration for those applications.

This part cross-references AMS Automotive 6658 for the same application.

Common Problems This Starter Can Address

• Slow or weak engine cranking
• No-start condition caused by starter failure
• Intermittent starting after key engagement
• Grinding or inconsistent starter engagement
• Electrical load issues related to an aging starter assembly

Installation Notes and Tips

Verify the vehicle year, engine configuration, mounting style, starter rotation, and tooth count before installation. Confirm flange mounting and clockwise rotation match the original unit, and compare the OE reference numbers when replacing the starter on a Ford Explorer, Explorer Sport Trac, Mountaineer, or Aviator. Inspect battery condition, cable connections, and charging-system output during replacement to help prevent repeat starting issues.

Quality Assurance

WAI starters are engineered to provide the amp output needed for today’s vehicles, and this 6658N unit is manufactured as a 100% new component rather than a remanufactured part. Proprietary components and processes are used to support maximum life and performance.