Dorman 645-209 Engine Coolant Level Sensor Connector

Brand Dorman 645-209
Package Contents 1 Pigtail
Terminal Gender Female
Terminal Material Plastic
Terminal Type Blade
Wire Gauge Measurement 16
Fits Mercury, Ford, and Lincoln · 38 vehicles

Weatherproof terminals. Help keep the electrical connection reliable and secure.

Locking tab. Provides a quick-disconnect connection that stays firmly in place.

Clean appearance. Creates a neat, finished look when installed.

Cross-references Standard Ignition S-2161, 3U2Z14S411ATA and PT2149 for the same application. See all 4.

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Engine Coolant Sensor Connector for Ford and Mercury

Dorman 645-209 is an engine coolant level sensor connector built for clean electrical repairs and accessory installations. It uses a 2-wire layout with female blade terminals and a locking tab to support a secure quick-disconnect connection on the vehicle harness.

Key Features

  • Engine coolant level sensor connector pigtail for electrical repair
  • 2-wire design with 16-gauge wire
  • Female blade terminals for direct sensor connection
  • Weatherproof terminals help protect the connection point
  • Locking tab supports a secure disconnect and reconnect
  • Plastic terminal material for a clean installed appearance

Detailed Description

This Dorman connector is a practical replacement for damaged, brittle, or corroded coolant sensor wiring at the reservoir or sensor interface. Part number 645-209 is used on a range of Ford, Mercury, and Lincoln applications, including the Ford Taurus, Mercury Sable, Ford Escape, Lincoln Continental, Lincoln Mark VIII, and Mercury Montego. It cross-references Standard Ignition S-2161 for the same application. The pigtail format helps restore a dependable electrical connection while maintaining a tidy factory-style look.

What It Helps Fix

  • Broken or loose engine coolant level sensor connector terminals
  • Corrosion at the coolant sensor plug
  • Intermittent coolant level warning signals caused by poor contact
  • Heat- or age-damaged wiring at the sensor connector
  • Failed quick-disconnect retention at the harness connection

Installation Notes and Tips

Verify the connector style, wire count, and terminal layout before installation. This part is listed for 2-wire engine coolant sensor connector applications on select Ford, Mercury, and Lincoln vehicles. Match the existing harness routing and confirm a secure lock after connection. For fitment, this connector is listed for 2005 Ford E-150, 2005 Ford E-150 Club Wagon, 2005 Ford E-250, 2005 Ford E-350 Club Wagon, 2005 Ford E-350 Super Duty, 2005 Ford Econoline, 1996-2004 Ford Taurus, 1996-2004 Mercury Sable, 2001-2002 Ford Escape, 2000-2002 Lincoln Continental, 1993-1998 Lincoln Mark VIII, and 2005-2007 Mercury Montego.

Quality Assurance

Dorman designs replacement electrical connectors for serviceable, factory-style repairs. This part number 645-209 is built with weatherproof terminals and a locking tab to support a reliable connection in coolant sensor applications.

This part fits 38 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2007MercuryMontegoN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2006MercuryMontegoN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2005FordE-150N/AEngine Coolant Sensor Connector, 2 Wire, Brown
2005FordE-150 Club WagonN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2005FordE-250N/AEngine Coolant Sensor Connector, 2 Wire, Brown
2005FordE-350 Club WagonN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2005FordE-350 Super DutyN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2005FordEconolineN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2005MercuryMontegoN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2004FordTaurusN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2004MercurySableN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2003FordTaurusN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2003MercurySableN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2002FordEscape2.0LL4N/AEngine Coolant Sensor Connector, 2 Wire, Brown
2002FordTaurusN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2002LincolnContinentalN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2002MercurySableN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2001FordEscape2.0LL4N/AEngine Coolant Sensor Connector, 2 Wire, Brown
2001FordTaurusN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2001LincolnContinentalN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2001MercurySableN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2000FordTaurusN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2000LincolnContinentalN/AEngine Coolant Sensor Connector, 2 Wire, Brown
2000MercurySableN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1999FordTaurusN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1999MercurySableN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1998FordTaurusN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1998LincolnMark VIIIN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1998MercurySableN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1997FordTaurusN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1997LincolnMark VIIIN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1997MercurySableN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1996FordTaurusN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1996LincolnMark VIIIN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1996MercurySableN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1995LincolnMark VIIIN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1994LincolnMark VIIIN/AEngine Coolant Sensor Connector, 2 Wire, Brown
1993LincolnMark VIIIN/AEngine Coolant Sensor Connector, 2 Wire, Brown
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — S-21613U2Z14S411ATAPT2149WPT372