One of the common weak points of both the 4G63 & the 4B11 is the rise of oil temperature. It is seen more often during hard driving at closed tracks and other events. The EVO uses a thermo switch that will activate when the temperature gets around 85 deg C. Yet when the oil temperature is low, it won’t activate thus restricting oil flow to the oil cooler which then consequently raises the oil temperature to unwanted levels. This Tomei oil thermo killer allows oil to flow into the oil cooler constantly regardless of the oils temperature. It is still easy to revert back to the stock thermo switch during winter periods to prevent over cooling as well.
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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
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Description
Tomei Oil Thermostat Killer Evo X/RalliartOne of the common weak points of both the 4G63 & the 4B11 is the rise of oil temperature. It is seen more often during hard driving at closed tracks and other events. The EVO uses a thermo switch that will activate when the temperature gets around 85 deg C. Yet when the oil temperature is low, it wont activate thus restricting oil flow to the oil cooler which then consequently raises the oil temperature to unwanted levels. This Tomei oil thermo killer
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4.7 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Comfortable
Size: Large, Color: (001) Black / Black / White
I recently picked up a pair of Under Armour socks, and they’ve quickly become my go-to choice for daily wear and workouts. From the first wear, the fit felt snug and supportive without being too tight. The fabric is lightweight yet durable, and it does a great job wicking sweat — keeping my feet dry even during longer runs or intense gym sessions.
One of the things I appreciate most is the arch support and cushioning in the right places. It adds just enough padding where I need it, especially under the ball and heel of the foot, which makes a noticeable difference on days when I’m on my feet a lot. The socks also have a nice breathable mesh pattern that improves airflow.
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Reviewed in the United States on January 4, 2026
★★★★★ 5
Great Socks.
Color: (002) Black / Black / Halo Gray, Size: Large
These are awesome and have become my favorite socks to have for everyday wear. I have since bought the hightop version as well and there are just as equally great. They fit almost like compression socks. Color does fade a bit after repeated washing but not enough to make a big difference in appearance. They have lasted for a long time and still going. They have lots of cushion which makes it very comfortable to wear.
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Great Socks
Color: (001) Black / Black / Castlerock, Size: Large
I keep ordering these over and over again. They fit well, and are soft and comfortable. My feet don't sweat like crazy while wearing them. The cupped heel makes them fit even better. They hold up to everything from everyday use to active lifestyles.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Talla perfecta
Color: (001) Black / Black / Castlerock, Size: Large
Excelente producto
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Very comfy!
Color: (100) White / White / Halo Gray, Size: Medium
Very soft, fits well.
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Reviewed in the United States on April 28, 2026
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