E EZEXPREZE Starter Replacement 6646N for Ford F-150 F-250 F-350 & Lincoln Navigator — 12V 1.4kW CW, 12-Tooth

EZEXPREZE 6646N is a direct-replacement 12V starter engineered to restore reliable engine cranking for compatible Ford and Lincoln V8/V10 models.

This starter unit is built to match OE fitment and specifications for many Ford F-150, F-250/F-350 Super Duty, F-450/F-550, Expedition, Excursion, Mustang, E-450, Lincoln Navigator, Mark LT and Blackwood vehicles that use the 6646N/6646 reference numbers. It delivers a clockwise (CW) rotation, 12V electrical input and a 1.4 kW power rating with a 12-tooth pinion to mesh with the ring gear. EZEXPREZE tests each starter and backs it with a one-year warranty and customer support for installation questions.

Will this starter fit my specific vehicle and engine?

Compatibility covers a wide range of model years and engine displacements. Check the list of covered years and engine sizes against your vehicle’s year, model and engine code; also compare OEM reference numbers stamped on your old starter to the provided cross-reference list.

• Ford F-150: 1999–2010 4.6L/5.4L; 2011–2013 5.0L; 2010–2013 6.2L; Heritage 2004 4.6L/5.4L
• Super Duty F-250/F-350/F-450/F-550: selected 4.6L–6.8L model years listed above
• Expedition, Excursion, Mustang, E-450, Lincoln Navigator, Mark LT, Blackwood: specific year ranges and engines noted
• Cross-reference: 6646N, 6646, F81U11000AA/AB/AD, YC3U11000AA/AB/AC, 41014043 and other listed numbers

What are the electrical and mechanical specifications I should verify?

This replacement starter follows the same basic electrical and mechanical layout as many OE starters: it is rated for 12 volts, provides approximately 1.4 kW of power, turns clockwise and uses a 12-tooth pinion. Verifying those specs against your original unit prevents mismatch and installation issues.

• Voltage: 12V
• Power: 1.4 kW
• Rotation: Clockwise (CW)
• Number of teeth on pinion: 12

How reliable is the EZEXPREZE starter and what support comes with it?

Each starter undergoes DV-style validation testing and comes with a one-year warranty to cover functional defects. EZEXPREZE also offers customer service and online engineering support to help with fitment questions and basic installation guidance.

• 100% DV testing completed prior to shipment
• One-year hassle-free warranty included
• Customer care and online technical support available
• Delivered as a complete exchange-style replacement unit

What should I check before installation to avoid returns or complications?

Confirm the starter's electrical connector and mounting bolt pattern match your vehicle, and compare the reference numbers on your old starter with the cross-reference list. Also inspect battery condition and ground connections; weak batteries or poor grounds are common causes of starter-related issues and can mimic starter failure.

• Match mounting flange and bolt hole locations
• Verify electrical plug/pigtail compatibility
• Confirm OEM reference numbers correspond to listed part numbers
• Check battery charge and vehicle grounds before replacement

Who is this for: This EZEXPREZE 6646N starter is aimed at DIY mechanics, professional technicians and fleet owners who need an affordable, tested direct-replacement starter for late‑1990s through early‑2010s Ford F-series trucks, Expeditions, Excursions, Mustangs and Lincoln Navigator variants with matching engine sizes and reference numbers. If you want an OE-form-fit electrical/mechanical match with manufacturer support and a one-year warranty, this starter is designed for you.