HomeBelts and Cooling > Thermostat and HousingBeck Arnley 143-0971 Engine Coolant Thermostat
Part #: 143-0971

Beck Arnley 143-0971 Engine Coolant Thermostat

⚙️ 29 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Lexus, IS300, NX300, RC300, GS300, GS200t, IS200t, NX200t, and RC200t
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Overview of Beck Arnley Engine Coolant Thermostat 143-0971

The Beck Arnley 143-0971 engine coolant thermostat is designed to regulate the engine temperature at 180 degrees Fahrenheit. This thermostat is compatible with various Lexus models, including the GS200t, GS300, IS200t, IS300, NX200t, NX300, RC200t, and RC300, ensuring precise temperature control for optimal engine performance.

  • Maintains engine temperature at 180°F for efficient cooling
  • Compatible with multiple Lexus models including GS200t, IS300, and NX300
  • Direct replacement part number 143-0971 for easy installation
  • Engineered to meet OEM specifications for reliable operation
  • Durable construction to withstand engine heat and pressure

Detailed Product Description

The Beck Arnley 143-0971 engine coolant thermostat plays a critical role in managing the engine’s operating temperature by opening and closing at 180 degrees Fahrenheit. This precise temperature control helps prevent engine overheating and promotes fuel efficiency. Designed specifically for Lexus vehicles such as the GS200t, IS200t, and RC300, this thermostat ensures compatibility and performance consistent with factory standards. The part number 143-0971 corresponds to a direct fit replacement, simplifying maintenance and repair tasks.

Applications and Common Issues Addressed

  • Prevents engine overheating by regulating coolant flow
  • Helps avoid poor fuel economy caused by incorrect engine temperature
  • Reduces risk of engine damage due to thermostat failure
  • Eliminates engine temperature fluctuations that cause rough idling
  • Resolves heater core issues related to thermostat malfunction

Installation Notes and Tips

When installing the Beck Arnley 143-0971 thermostat, ensure the engine is cool before beginning the replacement process. Drain the coolant system to avoid spills and contamination. Verify the thermostat orientation matches the original part to maintain proper coolant flow. After installation, refill the cooling system and bleed air pockets to prevent overheating. This thermostat is designed for direct replacement in Lexus GS200t, IS300, NX300, and other compatible models.

Quality Assurance and Warranty

Beck Arnley thermostats are manufactured to meet or exceed OEM standards, providing reliable temperature regulation and durability. The 143-0971 thermostat undergoes rigorous quality control to ensure consistent performance under demanding conditions. This part is backed by Beck Arnley’s limited warranty, covering defects in materials and workmanship for added peace of mind.

BrandBeck Arnley
Part Number143-0971
TEMPERATURE180

This part fits 29 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2024LexusIS3002.0LL4N/ATEMPERATURE 82C/180F
2024LexusRC3002.0LL4N/ATEMPERATURE 82C/180F
2023LexusIS3002.0LL4N/ATEMPERATURE 82C/180F
2023LexusRC3002.0LL4N/ATEMPERATURE 82C/180F
2022LexusIS3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2022LexusRC3002.0LL4N/ATEMPERATURE 82C/180F
2021LexusIS3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2021LexusNX3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2021LexusRC3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2020LexusIS3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2020LexusNX3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2020LexusRC3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2019LexusGS3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2019LexusIS3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2019LexusNX3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2019LexusRC3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2018LexusGS3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2018LexusIS3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2018LexusNX3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2018LexusRC3002.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2017LexusGS200t2.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2017LexusIS200t2.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2017LexusNX200t2.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2017LexusRC200t2.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2016LexusGS200t2.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2016LexusIS200t2.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2016LexusNX200t2.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2016LexusRC200t2.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180
2015LexusNX200t2.0LL4N/AOuter (Toward Lower Radiator Coolant Hose); TEMPERATURE 180

* 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:

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