Holstein 2CTS0121 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Honda and Acura

Holstein Parts 2CTS0121 is an engine coolant temperature sensor built for direct-fit replacement in a wide range of Honda and Acura applications. It uses a round female connector with two blade terminals and no wiring harness included, making it a straightforward sensor replacement for cooling-system temperature signal issues.

Compatible With Honda Accord, Civic, CR-V, Prelude, Odyssey, Pilot, S2000, Insight, Civic del Sol, and Acura NSX, Integra, Legend, RL, TL, CL, and MDX applications across model years from 1988 through 2009.

Key Features

• Engine coolant temperature sensor for cooling-system temperature input
• Holstein Parts 2CTS0121 replacement part number
• Round connector shape with female connector gender
• 2 blade terminals for the electrical connection
• No wiring harness included
• Direct replacement style for select Honda and Acura vehicles

Product Details

Holstein Parts 2CTS0121 is an engine coolant temperature sensor used to report coolant temperature to the vehicle’s engine management system. Accurate coolant temperature input is important for fuel delivery, idle control, and cooling fan operation. This sensor is listed for a broad range of Honda and Acura models, including 1988-2002 Honda Accord, 1995-2000 Honda Civic, 1997-2001 Honda CR-V, 2000-2006 Honda Insight, 2008-2009 Honda S2000, and Acura applications such as NSX, Integra, TL, RL, CL, and MDX. This part cross-references Standard Ignition TX37 and NTK EF0069 for the same application.

Common Issues This Sensor Can Help Address

• Incorrect coolant temperature readings on the dash or scan tool
• Hard starting or rough idle related to temperature signal errors
• Cooling fan operation that does not respond correctly to engine temperature
• Fuel mixture concerns caused by inaccurate coolant temperature input
• Check engine light conditions tied to coolant temperature sensor faults

Installation Notes and Tips

Verify connector shape, terminal count, and sensor location before installation. This Holstein Parts sensor uses a round female connector with two blade terminals and does not include a wiring harness. Confirm the vehicle application by year, make, and model before replacing the original sensor, and inspect the connector and surrounding cooling-system components for corrosion or damage during service.

Quality Assurance

Holstein Parts supplies replacement sensors for specific import applications, and part number 2CTS0121 is cataloged for direct-fit use across the listed Honda and Acura vehicles.