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About ICT Billet
ICT Billet was born from a passion for LS swaps. After tackling our first swap in 2001, we saw the need for better parts and reliable information. In 2014, we launched ICT Billet to provide high-quality, American-made parts that simplify and enhance LS and LT swaps.
We’re dedicated to supporting car enthusiasts with precision-engineered products, detailed installation guides, and world-class service. Thank you for choosing ICT Billet—your partner in making exceptional builds a reality.
ICT Billet LS Engine Swap M12 1.5 Adapter to 3/8 NPT Extended Length Coolant Temperature Sensor Adapter Water LS Engine 551179L
Extended Length Adapter - Male M12-1.5 to Female 3/8"-18 NPT Adapter
ICT Billet LS Engine Swap M12 1.5 Adapter to 3/8 NPT Extended Length Coolant Temperature Sensor Factory LS cylinder heads are machined with metric M12-1.5 coolant sensor ports, so your factory Small Block Chevy sensor won't thread in to them. This adapter allows you to keep your original sensors and integrate them into your swapped LS engine.
- This Adapts Sbc/Bbc (3/8" Npt) Coolant Temperature Sensors To Fit Into Ls Series Cylinder Heads
- Compatible With: All Gm Ls Series Engines
- Made In Wichita, Kansas From Aerospace Grade, Usa Produced, Billet Aluminum
- Includes: 1 Aluminum Adapter, 1 Sealing Washer
Premium USA Produced Materials
Our parts are crafted from premium-grade materials, sourced and produced right here in the USA. Designed by experts in our state-of-the-art facility, we use cutting-edge American-made equipment to ensure unmatched quality and durability.
Exceptional Quality
At ICT Billet, quality is our standard. Every part we produce is crafted with precision using advanced manufacturing technologies in our USA facility. Our commitment to excellence ensures unmatched reliability and performance for your engine swap.
Innovation in Development
At ICT Billet, precision is key. Using advanced technology, we laser-scan vehicles to create solid models for perfect fitment every time. Our commitment to research and development ensures our products work seamlessly from the start.
Proudly American Made
Keeping jobs in America is our priority. We use USA-made materials, belt tensioners, metric flange bolts, pulleys, and more. Our focus on American manufacturing means reliable products you can trust.
Your Complete LS Swap Shop
From engine mounts to wiring, ICT Billet is your one-stop shop for LS swaps. We provide everything you need to make your swap smooth, efficient, and professional.
SEMA Proud, SEMA Strong
As a proud member of SEMA, we are part of an elite group of automotive manufacturers. Our dedication to quality and innovation sets us apart, delivering products you can depend on.
Jason or Jennifer
Reviewed in the United States on March 5, 2025
Fits, works, shipped fast, good price.
C68
Reviewed in the United States on September 3, 2023
Just what I was looking for. I was doing an LS swap and the electric relay fan kit i purchased came with a larger and longer sensor than usual. This will fix my issues. I would suggest measuring the length of the sensor before purchasing this adapter
kelly jo selke
Reviewed in the United States on June 23, 2023
Worked perfectly with our auto meter temp gauge
Chris Thayer
Reviewed in the United States on January 26, 2023
Wierd to say about such a simple product, but very good quality. Fit well. Finally able to adapt a mechanical aftermarket temp guage to my LS build (5.3L vortec). Shipping was crazy slow, but it solved my problem so im not gonna complain
Michael Schroeck
Reviewed in the United States on July 31, 2022
Perfect!
Ellis Groo
Reviewed in the United States on August 15, 2021
ICT makes great stuff and this is no different. Unfortunately it is to long to fit in our 95 Z28 converted to LSx. It hits the A/C box. This was a conversion for my wife so everything still work including the A/C.I just have to find one sorter now
criztiqn
Reviewed in the United States on October 7, 2021
got this for aftermarket gauges for my 6-port 13B, fit great on OEM waterneck threads. i run a side-draft with a WEBER and there are no clearance issues, but it is tough to get in and out of and coolant spills on the block
Mel
Reviewed in the United States on June 22, 2020
Yes it fits the ECT sensor port any LS head, either side i might add, and yes it works with my jegs kit with the 3/8 sensor for the aftermarket cooling fan kit.
Customer
Reviewed in Canada on September 5, 2019
Work perfect on my LS engine for my mechanical auto meter gauge with long probe. Installed it R/H rear head.
gisele richard
Reviewed in Canada on June 1, 2019
Work
Clay Wamboldt
Reviewed in Canada on July 26, 2018
Worked perfect
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