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🌡️ Stay cool, drive smarter — never miss a beat under the hood!
The SPEEDWOX 40mm Water Coolant Temperature Sensor Adapter is a robust aluminum alloy radiator hose adapter designed for precise coolant temperature measurement. It comes with two premium stainless steel hose clamps for secure, rust-resistant installation, helping prevent engine overheating and mechanical failures by enabling timely diagnostics.
| ASIN | B09VBNBV4T |
| Best Sellers Rank | #557,708 in Automotive ( See Top 100 in Automotive ) #4,571 in Automotive Replacement Coolant Temperature Sensors |
| Brand | SPEEDWOX |
| Brand Name | SPEEDWOX |
| Customer Reviews | 4.2 out of 5 stars 56 Reviews |
| Item Dimensions | 3.54 x 2.44 x 2.44 inches |
| Item dimensions L x W x H | 3.54 x 2.44 x 2.44 inches |
| Manufacturer | SPEEDWOX |
| Material | Aluminum, Stainless Steel |
| Material Type | Aluminum, Stainless Steel |
| Model | BWTJP40-1218 |
| Part Number | BWTJP40-1218 |
C**7
Good quality
Good quality, ended up not needing it though
S**S
Great for coolant pressure
I use these and split upper rad hose for coolant pressure when I’m makin lunch meat out of my head gaskets on my SBE dumpster fires
A**R
Fits temp sensor for k24 engine perfectly
Fits just like advertised
A**R
Not a good product
Super thin and much cheaper looking than I expected. This unit has to be grounded for any sensor to work and comes with a threaded ground screw hole . No idea why they would drill this hole all the way through into the water so that the screw will rust itself in place. Clamps are junk and the whole thing is undersized and sloppy in a 1 1/2 inch hose. Yes it was to good to be true.
C**L
As represented
Item appears as represented. Should work as needed
T**.
Actual diameter wrong
The other reviews are true. I bought a 32mm and I measured it with a caliper and it was much smaller. Plus, the clamps were defective.
A**R
metal burrs obstruct use of a sensor ...Junk
Poor craftsmanship.....metal burrs obstruct use of a sensor.....did not include the small grounding screw.... I would not recommend
B**G
Ls1
Adaptor worked well. Hose clamps are a joke.
M**L
What size sensor
Came well packed in its black box, agree with others get better clamps. Would be good if details mentioned size of sensor and not rely upon people looking at pics
S**Y
As advertised
Fit well and the threads were vkean and of decent quality. No sealing issues. Good product for the price
K**E
Easy install
Easy to install if you have basic wrenching skills. On silicone hose, make two cuts and remove a section equal to the adapter’s center width so the clamps seat properly. I used a 2-wire sensor, so the ground pin was not needed.
M**Y
Decent
Works as it should
Trustpilot
3 weeks ago
2 weeks ago