Standard Ignition S-2120 Engine Coolant Temperature Sensor Connector

Engine Coolant Temperature Sensor Connector

Standard Ignition S-2120 is a direct replacement engine coolant temperature sensor connector for repairing damaged wiring at the sensor connection point. It is built for a secure electrical interface and is a practical choice when you want to replace the connector instead of the full harness.

Compatible With Dodge Dakota, Durango, Ram 1500, Ram 2500, Ram 3500, Jeep Grand Cherokee, and other Chrysler, Dodge, and Jeep applications across the 1991-2003 model years, this connector supports common coolant temperature sensor repair needs on older trucks and SUVs.

Key Features

• Male oval connector housing with female blade terminals
• 2-terminal, 2-wire design for coolant temperature sensor circuits
• Direct replacement electrical connector for damaged or heat-affected plugs
• Housing made from polyamide resin for durability
• Terminals use copper alloy, brass, and phosphor bronze materials
• 100% tested for mechanical and electrical fit, form, and function

Detailed Description

The Standard Ignition S-2120 engine coolant temperature sensor connector is engineered for vehicles that need a reliable replacement at the sensor plug. It is commonly used on Dodge Dakota, Dodge Ram 1500, Dodge Ram 2500, Dodge Ram 3500, and Jeep Grand Cherokee applications, along with related Chrysler and Plymouth models from the early 1990s through 2003. This part cross-references Hella 1156 for the same application.

By replacing only the connector, you can restore the electrical connection at the coolant temperature sensor without replacing the entire harness. The connector’s terminal materials and polyamide housing are selected to support long service life and consistent electrical performance. Standard Ignition S-2120 is also referenced by part numbers such as 1P1788 and EC2022.

Common Repair Uses

• Broken or cracked coolant temperature sensor connector housing
• Corroded or heat-damaged terminals at the sensor plug
• Intermittent temperature gauge or engine temperature signal issues
• Loose electrical connection at the engine coolant temperature sensor
• Wiring repair after connector damage during service

Installation Notes and Tips

Inspect the sensor pigtail, terminal condition, and surrounding wiring before installation. Confirm the connector shape, terminal style, and wire count match the original part on the vehicle. For best results, verify the repair at the engine coolant temperature sensor location and check for secure terminal engagement after installation.

Quality Assurance

Standard Ignition tests its electrical connectors for proper mechanical and electrical fit, form, and function. The S-2120 is built as a direct replacement connector using durable terminal and housing materials to support dependable service in engine cooling system electrical repairs.