Beck Arnley 143-0721 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Infiniti, Nissan, and Mercury Vehicles

The Beck Arnley 143-0721 engine coolant thermostat is designed to maintain optimal engine temperature for a range of Infiniti, Nissan, and Mercury models. With a precise 180-degree temperature rating, this thermostat helps regulate coolant flow to ensure efficient engine performance.

• Engine coolant thermostat with 180°F temperature rating
• Compatible with Infiniti, Nissan, and Mercury vehicles including 300ZX, Maxima, Pathfinder, and more
• Thermostat housing not included
• Beck Arnley quality and engineering standards
• Part number 143-0721 for accurate identification

Product Details and Specifications

This Beck Arnley engine coolant thermostat (part number 143-0721) is engineered to open at 180 degrees Fahrenheit, allowing coolant to circulate through the engine once the optimal operating temperature is reached. It is compatible with multiple models such as the Nissan 300ZX, Pathfinder, Frontier, and Mercury Villager, as well as Infiniti Q45 and J30. Note that the thermostat housing is not included with this part, so ensure your existing housing is in good condition or sourced separately.

Compatible Vehicles and Applications

This thermostat is specifically designed for use in the following makes and models:

• Infiniti: J30, Q45
• Mercury: Villager, Mountaineer
• Nissan: 200SX, 300ZX, D21, Frontier, M30, Maxima, Pathfinder, Pickup, Quest, QX4, Xterra

It is ideal for replacing a faulty or malfunctioning thermostat that may cause engine overheating or poor temperature regulation.

Common Issues Addressed by This Thermostat

• Engine overheating due to stuck-closed thermostat
• Poor heater performance from stuck-open thermostat
• Erratic engine temperature fluctuations
• Reduced fuel efficiency caused by improper engine temperature
• Check engine light related to cooling system faults

Installation Notes and Tips

When installing the Beck Arnley 143-0721 thermostat, verify that the engine is cool before beginning work. Drain the coolant to prevent spills and ensure proper seating of the thermostat in the housing. Since the housing is not included, inspect the existing housing for cracks or damage and replace if necessary. Follow manufacturer torque specifications to avoid leaks or damage.

Quality Assurance and Warranty

Beck Arnley parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The 143-0721 engine coolant thermostat undergoes rigorous quality control testing. Please consult Beck Arnley or your parts provider for specific warranty details related to this thermostat.