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Dorman 645-900 Transmission Fluid Temperature Sensor ConnectorOE Quality 60-Day Returns
Part #: 645-900

Dorman 645-900 Transmission Fluid Temperature Sensor Connector

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220 vehicles fit this part
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Fitment: Saturn, SC1, SC2, SL, SL1, SL2, SW2, SW1, and SC
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Not what you need? See all Transmission Fluid Temperature Sensor Connector options

Transmission Fluid Temperature Sensor Connector for Saturn

Dorman 645-900 is a transmission fluid temperature sensor connector pigtail built for clean electrical repairs and accessory installations. It uses weatherproof terminals and a locking tab to support a secure quick-disconnect connection on Saturn SC1, SC2, SL, SL1, SL2, SW1, and SW2 applications.

Key Features

  • Transmission fluid temperature sensor connector pigtail
  • 16 in. wiring harness length for repair routing
  • 2-wire, 20-gauge construction
  • Female connector with female bullet terminals
  • Phosphor bronze terminals with tin plating
  • Weatherproof terminals and locking tab for a secure connection
  • Direct replacement style for Saturn transmission sensor wiring repairs

Detailed Description

This Dorman 645-900 connector is built for transmission fluid temperature sensor service where the original connector has damaged terminals, broken locking features, or deteriorated wiring. The 16-inch harness gives added reach for splice-in repairs, while the bullet-style female terminals and weather-resistant design help restore a dependable electrical connection. It is a practical choice for Saturn SC1, Saturn SC2, and Saturn SL-series transmission sensor connector repairs, including Saturn SW1 and Saturn SW2 applications.

This part cross-references Standard Ignition S-1170 for the same application.

What It Helps Fix

  • Broken or brittle transmission sensor connector housings
  • Corroded or loose electrical terminals
  • Intermittent transmission fluid temperature sensor signals
  • Damaged wiring near the transmission harness
  • Poor quick-disconnect retention at the sensor connection

Installation Notes and Tips

Verify the connector style, terminal count, and wire layout before splicing into the vehicle harness. Match the existing wire routing and secure the repair away from heat, moving parts, and fluid exposure. Confirm a solid terminal lock after installation and inspect the connection for proper seating on Saturn SC1, Saturn SL2, and related models listed in the fitment data.

Quality Assurance

Dorman manufactures replacement electrical repair parts with attention to fit, function, and serviceability. The connector uses weatherproof terminals and phosphor bronze terminals with tin plating to support reliable electrical contact in transmission sensor applications.

BrandDorman
Part Number645-900
Connector GenderFemale
Overall Length16 in
Package Contents1 Pigtail
Terminal GenderFemale
Terminal MaterialPhosphor Bronze (Tin Plate)
Terminal Quantity2
Terminal TypeBullet
Wire Gauge Measurement20
Wiring Harness Length16

This part fits 220 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
2002SaturnSC1AutomaticN/A
2002SaturnSC1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2002SaturnSC1N/A
2002SaturnSC2AutomaticN/A
2002SaturnSC2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2002SaturnSC2N/A
2002SaturnSLAutomaticN/A
2002SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
2002SaturnSLN/A
2002SaturnSL1AutomaticN/A
2002SaturnSL1N/A
2002SaturnSL2AutomaticN/A
2002SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2002SaturnSL2N/A
2001SaturnSC1AutomaticN/A
2001SaturnSC1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2001SaturnSC1N/A
2001SaturnSC2AutomaticN/A
2001SaturnSC2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2001SaturnSC2N/A
2001SaturnSLAutomaticN/A
2001SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
2001SaturnSLN/A
2001SaturnSL1AutomaticN/A
2001SaturnSL1N/A
2001SaturnSL2AutomaticN/A
2001SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2001SaturnSL2N/A
2001SaturnSW2AutomaticN/A
2001SaturnSW2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2001SaturnSW2N/A
2000SaturnSC1AutomaticN/A
2000SaturnSC1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2000SaturnSC1N/A
2000SaturnSC2AutomaticN/A
2000SaturnSC2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2000SaturnSC2N/A
2000SaturnSLAutomaticN/A
2000SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
2000SaturnSLN/A
2000SaturnSL1AutomaticN/A
2000SaturnSL1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2000SaturnSL1N/A
2000SaturnSL2AutomaticN/A
2000SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2000SaturnSL2N/A
2000SaturnSW2AutomaticN/A
2000SaturnSW2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
2000SaturnSW2N/A
1999SaturnSC1AutomaticN/A
1999SaturnSC1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1999SaturnSC1N/A
1999SaturnSC2AutomaticN/A
1999SaturnSC2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1999SaturnSC2N/A
1999SaturnSLAutomaticN/A
1999SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1999SaturnSLN/A
1999SaturnSL1AutomaticN/A
1999SaturnSL1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1999SaturnSL1N/A
1999SaturnSL2AutomaticN/A
1999SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1999SaturnSL2N/A
1999SaturnSW1AutomaticN/A
1999SaturnSW1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1999SaturnSW1N/A
1999SaturnSW2AutomaticN/A
1999SaturnSW2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1999SaturnSW2N/A
1998SaturnSC1AutomaticN/A
1998SaturnSC1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1998SaturnSC1N/A
1998SaturnSC2AutomaticN/A
1998SaturnSC2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1998SaturnSC2N/A
1998SaturnSLAutomaticN/A
1998SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1998SaturnSLN/A
1998SaturnSL1AutomaticN/A
1998SaturnSL1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1998SaturnSL1N/A
1998SaturnSL2AutomaticN/A
1998SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1998SaturnSL2N/A
1998SaturnSW1AutomaticN/A
1998SaturnSW1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1998SaturnSW1N/A
1998SaturnSW2AutomaticN/A
1998SaturnSW2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1998SaturnSW2N/A
1997SaturnSC1AutomaticN/A
1997SaturnSC1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1997SaturnSC1N/A
1997SaturnSC2AutomaticN/A
1997SaturnSC2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1997SaturnSC2N/A
1997SaturnSLAutomaticN/A
1997SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1997SaturnSLN/A
1997SaturnSL1AutomaticN/A
1997SaturnSL1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1997SaturnSL1N/A
1997SaturnSL2AutomaticN/A
1997SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1997SaturnSL2N/A
1997SaturnSW1AutomaticN/A
1997SaturnSW1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1997SaturnSW1N/A
1997SaturnSW2AutomaticN/A
1997SaturnSW2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1997SaturnSW2N/A
1996SaturnSC1AutomaticN/A
1996SaturnSC1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1996SaturnSC1N/A
1996SaturnSC2AutomaticN/A
1996SaturnSC2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1996SaturnSC2N/A
1996SaturnSLAutomaticN/A
1996SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1996SaturnSLN/A
1996SaturnSL1AutomaticN/A
1996SaturnSL1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1996SaturnSL1N/A
1996SaturnSL2AutomaticN/A
1996SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1996SaturnSL2N/A
1996SaturnSW1AutomaticN/A
1996SaturnSW1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1996SaturnSW1N/A
1996SaturnSW2AutomaticN/A
1996SaturnSW2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1996SaturnSW2N/A
1995SaturnSC1AutomaticN/A
1995SaturnSC1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1995SaturnSC1N/A
1995SaturnSC2AutomaticN/A
1995SaturnSC2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1995SaturnSC2N/A
1995SaturnSLAutomaticN/A
1995SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1995SaturnSLN/A
1995SaturnSL1AutomaticN/A
1995SaturnSL1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1995SaturnSL1N/A
1995SaturnSL2AutomaticN/A
1995SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1995SaturnSL2N/A
1995SaturnSW1AutomaticN/A
1995SaturnSW1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1995SaturnSW1N/A
1995SaturnSW2AutomaticN/A
1995SaturnSW2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1995SaturnSW2N/A
1994SaturnSC1AutomaticN/A
1994SaturnSC1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1994SaturnSC1N/A
1994SaturnSC2AutomaticN/A
1994SaturnSC2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1994SaturnSC2N/A
1994SaturnSLAutomaticN/A
1994SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1994SaturnSLN/A
1994SaturnSL1AutomaticN/A
1994SaturnSL1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1994SaturnSL1N/A
1994SaturnSL2AutomaticN/A
1994SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1994SaturnSL2N/A
1994SaturnSW1AutomaticN/A
1994SaturnSW1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1994SaturnSW1N/A
1994SaturnSW2AutomaticN/A
1994SaturnSW2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1994SaturnSW2N/A
1993SaturnSC1AutomaticN/A
1993SaturnSC1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1993SaturnSC1N/A
1993SaturnSC2AutomaticN/A
1993SaturnSC2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1993SaturnSC2N/A
1993SaturnSLAutomaticN/A
1993SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1993SaturnSLN/A
1993SaturnSL1AutomaticN/A
1993SaturnSL1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1993SaturnSL1N/A
1993SaturnSL2AutomaticN/A
1993SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1993SaturnSL2N/A
1993SaturnSW1AutomaticN/A
1993SaturnSW1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1993SaturnSW1N/A
1993SaturnSW2AutomaticN/A
1993SaturnSW2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1993SaturnSW2N/A
1992SaturnSCAutomaticN/A
1992SaturnSCN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1992SaturnSCN/A
1992SaturnSLAutomaticN/A
1992SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1992SaturnSLN/A
1992SaturnSL1AutomaticN/A
1992SaturnSL1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1992SaturnSL1N/A
1992SaturnSL2AutomaticN/A
1992SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1992SaturnSL2N/A
1991SaturnSCAutomaticN/A
1991SaturnSCN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1991SaturnSCN/A
1991SaturnSLAutomaticN/A
1991SaturnSLN/ATransmission Fluid Temperature Sensor Connector - 2 Way
1991SaturnSLN/A
1991SaturnSL1AutomaticN/A
1991SaturnSL1N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1991SaturnSL1N/A
1991SaturnSL2AutomaticN/A
1991SaturnSL2N/ATransmission Fluid Temperature Sensor Connector - 2 Way
1991SaturnSL2N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

121170871P1439807PT668S-1170

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.