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What size is the LS coolant temp sensor plug?

The LS coolant temp sensor plug is a standard size that is commonly used in many GM vehicles equipped with the LS engine. The plug is typically 3/8 inch in diameter and has a threaded connection to securely attach the coolant temperature sensor to the engine block.


Understanding the LS Coolant Temp Sensor Plug


The coolant temperature sensor is an important component in the engine management system of LS-powered vehicles. It measures the temperature of the engine coolant and sends this information to the vehicle's computer, which uses it to optimize fuel delivery, ignition timing, and other engine functions. The sensor plug provides the connection point for the coolant temp sensor to interface with the engine block.


Plug Size and Compatibility



  • The LS coolant temp sensor plug is typically 3/8 inch in diameter, with a threaded connection.

  • This size is common across many LS engine applications, including the LS1, LS2, LS3, LS4, LS6, LS7, and LS9 engines.

  • The plug size and thread pattern allow the coolant temp sensor to be easily installed and replaced as needed during maintenance or engine swaps.

  • Ensuring the correct plug size is important for a proper seal and to avoid any leaks in the cooling system.


In summary, the LS coolant temp sensor plug is a standard 3/8 inch diameter component that is widely used across the LS engine family. Knowing the correct plug size is crucial for maintaining the integrity of the cooling system and engine management in LS-powered vehicles.

What tool is used to remove the coolant temperature sensor?


Most coolant sensors are installed sort of like spark plugs, which means they're unscrewed in a counterclockwise direction using a deep socket and ratchet. You can also use a plain old wrench, but make sure you use the right size.



What size is the LS1 coolant temp sensor?


It's actually 12x1. 5mm thread, autometer and others make adapters to go from 12x1.



What size is the thread on a GM IAT?


Thread size of GM IAT sensor?? Be the first to like this post. It is 3/8 NPT which is a tapered thread.



What is the thread pitch of a GM temperature sensor?


3/8 npt
coolant temp sensor. G.M. sensors are 3/8 npt.



What is the normal temperature of ls1?


Many will install a 160* thermostat and have the fans programmed to turn on around 170* to 180*. The combination of a lower temperature thermostat and the fans coming on at a lower temperature will help regulate coolant temperature around 170* to 180* during normal idle and cruise conditions.



What size thread is the LS1 air temperature sensor?


3/8"npt
LS Intake Air Temperature Sensor IAT 3/8"npt Threaded Turbo LS1.



What size thread is the LS oil pressure sensor?


The M16-1.5 thread is perfect for connecting to the Oil Pressure Sensor of your GM LS Series Engine, while the 1/8" NPT female thread allows for seamless connection to a variety of aftermarket gauges and sensors.



Where is coolant temp sensor on LS?


So they provide a brass washer that provides a really good ground for the sensor. So you don't have to worry about. It.



What size thread is an air fitting?


Thread sizes are typically 1/8", 1/4", 3/8", 1/2" or 3/4" pipe thread. A fitting that has male pipe threads (MPT) can only mate to something with female pipe threads (FPT) that are of the same pipe thread size.



What size thread is a LS coolant temperature sensor?


This sensor already uses M12 threads.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.