WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC Superior 6L80 6L90 8L90 Sure Cool System Upgrade STL010
Product ID: 569805968
⚙️Immediate fluid level check
🌡️20% cooler operation
🛡️Built-in safety bypass
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❄️ Keep your ride cool, calm, and unstoppable with Sure Cool tech!
The WIT WHATEVER IT TAKES Superior 6L80/90 & 8L90 Sure Cool System Upgrade (STL010) is a precision-engineered cooler flow bypass valve kit designed for 2014+ 6L80/90E and 2016+ 8L80/90E transmissions. It delivers immediate fluid level accuracy without warm-up, reduces operating temperatures by up to 20%, and features a built-in safety bypass to prevent overheating—extending transmission fluid life and enhancing reliability. With no assembly required and a stellar 4.8-star rating from over 1,300 users, it’s the must-have upgrade for professionals who demand peak performance and durability.
| ASIN | B0BCL9M23T |
| Assembly Required | No |
| Brand | WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,363) |
| Date First Available | 9 September 2022 |
| Generic Name | Cooler Flow Bypass Valve Kit |
| Item Dimensions LxWxH | 10.2 x 10.2 x 2.5 Centimeters |
| Item Weight | 110 g |
| Item model number | STL010 |
| Manufacturer | Superior |
| Manufacturer Part Number | STL010 |
| Model | COOLER FLOW BYPASS |
| Product Dimensions | 10.16 x 10.16 x 2.54 cm; 110 g |
M**D
Good
Good
J**R
exelente
buen producto cumple con su funcion
C**E
Straight forward quality product.
Works well. Lowered my temps by about 10-20 degrees. Especially works well when the day is cooler. It didn't lower it the 50 degrees like you'll hear people talk about, but for 59 bucks 15 degrees is worth it. Easy installation, straight forward instructions.
C**R
Excellent Transmission Cooling Product
Does exactly as intended. An absolutely amazing product. Simple to install, directions were very easy to follow and if you need visual help there are many how to install videos on youtube. Took transmission temps from over 100C down to 65-70C and actually improved shifting.
E**N
Sure, cool system with active bypass
Exactly what it shows came super fast haven't installed it yet. Will be doing that tomorrow. Will get back in time to leave a better review talking about it. installed it March 9, 2025/2 hour to change it over put all new O-rings and gasket behind used to run at 84 Celsius now it runs at 50 Celsius shifts different way. Smoother will wait till Midsummer when it gets hotter to see the big difference highly recommend this should have it for those new trucks for sure worth every penny... it is now April 19/25 back to say wow you have the eight speed transmission. This thing makes a world of difference. Can't believe how much better the transmission runs way cooler the highest my temperature yet gets up to in Celsius 51.
Trustpilot
3 weeks ago
3 weeks ago