MPA Electrical 6646SN Starter Motor

Starter for Ford and Lincoln Applications

MPA Electrical 6646SN is a new 12-volt starter built for Ford and Lincoln trucks and SUVs that use a Ford starter application. It features a permanent magnet gear reduction design with a 1.4 kW rating, clockwise rotation, and a 12-tooth drive for dependable engine cranking.

Use this starter for direct replacement service on select Ford F-150, F-250 Super Duty, F-350 Super Duty, Expedition, Mustang, Excursion, and Lincoln Navigator, Mark LT, and Blackwood applications. Part number 6646SN is also listed with common OE and aftermarket cross-references for the same application.

Key Features

• Brand: MPA Electrical, New line
• Part number: 6646SN
• Permanent magnet gear reduction starter
• 1.4 kW output
• 12-volt electrical system
• Clockwise rotation
• 12-tooth drive
• Built for Ford starter applications

Detailed Description

MPA Electrical 6646SN is engineered as a replacement starter for a wide range of Ford and Lincoln vehicles from 1999 through 2014. The permanent magnet gear reduction design helps deliver strong cranking performance in a compact starter format, while the 12-volt, clockwise-rotation configuration matches the listed applications. This starter is a practical choice for Ford F-150 and Super Duty trucks, as well as Expedition, Mustang, Navigator, Mark LT, Excursion, and Blackwood models that call for this style of starter. This part number, 6646SN, is also associated with common interchange references used across the same fitment group.

This part cross-references AMS Automotive 6646 for the same application.

What It Helps Fix

• Slow or weak engine cranking
• No-start condition caused by starter failure
• Intermittent starter engagement
• Grinding or inconsistent starter drive operation
• Electrical starting issues on Ford and Lincoln trucks and SUVs

Installation Notes and Tips

Verify the vehicle’s starter configuration, tooth count, rotation, and voltage before installation. Confirm fitment by year, make, model, and any listed notes such as Ford starter application or production cutoff dates. Compare the removed unit to 6646SN and check connector and mounting alignment before final installation.

Quality Assurance

MPA Electrical’s New line identifies this as a new replacement component for starter service on the listed Ford and Lincoln applications. Confirm all fitment details against the vehicle before ordering.

Compatible Vehicles

• Fits 2007-2014 Ford Expedition, N/A, w/ Ford Starter; New
• Fits 2005-2014 Ford Mustang, N/A, New
• Fits 2005-2014 Lincoln Navigator, N/A, w/ Ford Starter; New
• Fits 2013 Ford F-150, N/A, w/ Ford Starter; New
• Fits 2011-2013 Ford F-250 Super Duty, N/A, w/ Ford Starter; New
• Fits 2011-2013 Ford F-350 Super Duty, N/A, w/ Ford Starter; New
• Fits 1999-2012 Ford F-150, N/A, New
• Fits 2010-2012 Lincoln Mark LT, N/A, New
• Fits 2006-2008 Lincoln Mark LT, N/A, New
• Fits 2011 Ford F-350, N/A, New
• Fits 1999-2001 Ford F-350, N/A, New
• Fits 2010 Ford F-250 Super Duty, N/A, New
• Fits 1999-2008 Ford F-250 Super Duty, N/A, New
• Fits 2010 Ford F-350 Super Duty, N/A, New
• Fits 1999-2008 Ford F-350 Super Duty, N/A, New
• Fits 1999-2009 Ford F-250, N/A, New
• Fits 2005-2009 Ford F-250 Super Duty, N/A, To 12/16/2008; New
• Fits 1999-2000 Ford F-250 Super Duty, N/A, To 12/16/2008; New
• Fits 2009 Ford F-350 Super Duty, N/A, To 12/16/2008; New
• Fits 1999 Ford F-350 Super Duty, N/A, To 12/16/2008; New
• Fits 1999-2006 Ford Expedition, N/A, New
• Fits 2000-2005 Ford Excursion, N/A, New
• Fits 2004 Ford F-150 Heritage, N/A, New
• Fits 1999-2004 Lincoln Navigator, N/A, New
• Fits 2002 Lincoln Blackwood, N/A, New