SKU: 20730716641

WIT 6L80/6L90/8L90 Sure Cool System Upgrade - Model STL010 for Enhanced Performance

$46.76 $51.95
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

WIT 6L80/6L90/8L90 Sure Cool System Upgrade - Model STL010 for Enhanced PerformanceThe Superior STL010 Cooler Flow Bypass Valve Kit is a premium automotive component designed for 2014 and newer 6L80 90E, as well as 8L80 90E transmissions from 2016 onward. This innovative kit is engineered to enhance the cooling efficiency of your transmission system, ensuring optimal performance and longevity. Crafted by WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC, the Superior STL010 employs TransLabs patented Flow~Control cooler bypass

The Superior STL010 Cooler Flow Bypass Valve Kit is a premium automotive component designed for 2014 and newer 6L80/90E, as well as 8L80/90E transmissions from 2016 onward. This innovative kit is engineered to enhance the cooling efficiency of your transmission system, ensuring optimal performance and longevity.

Crafted by WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC, the Superior STL010 employs TransLab’s patented Flow~Control cooler bypass technologies. This cutting-edge design allows for continuous cooler flow and lubrication to critical parts of the transmission, significantly reducing the risk of overheating. The kit features a built-in safety bypass and provides immediate cooler fill, ensuring that your transmission is always operating within safe temperature ranges.

Key Features:
  • Compatible with 2014-up 6L80/90E and 2016-up 8L80/90E transmissions.
  • Built-in safety bypass ensures reliable operation under various conditions.
  • Immediate cooler fill for enhanced cooling efficiency.
  • Allows for immediate accurate fluid level checks without the need for a warm-up cycle.
  • Reduces average operating temperatures by as much as 20%, promoting better overall performance.
  • Minimizes the risk of overheating while under load, enhancing safety and reliability.
  • Increases the life of automatic transmission fluid (ATF), reducing maintenance costs.

The Superior STL010 Cooler Flow Bypass Valve Kit is an ideal choice for automotive enthusiasts, professional mechanics, and anyone looking to maintain their vehicle's transmission in peak condition. With its advanced cooling technologies and robust design, this product delivers significant performance benefits, making it a smart investment for long-term vehicle reliability. Ensure your transmission operates efficiently and stays cool under pressure with the Superior STL010 kit.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20730716641

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4.8 ★★★★★
Based on 24 reviews
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Verified Purchase
gary pearson
Omaha, US
★★★★★ 4
Nice for the price
Set name: 5.1 Receiver, Set name: 5.1 Receiver
Was extremely easy to set up. The automatic sound balancing works good. Sound quality is good as is the surround sound feature. I personally feels it loses a bit of sound quality when connecting a Bluetooth item like my phone. Otherwise, I am satisfied.
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Reviewed in the United States on February 18, 2026
N
Verified Purchase
nh
Birmingham, US
★★★★★ 5
Far superior to price comparable Sony receiver
Set name: 5.1 Receiver
I want to compare this to Sony STRDH590, which I owned before this and is of a comparable price. My Sony stopped receiving signal from its remote control within 2 years. There was no way to control many features due to this. The Yamaha has a wide range of buttons on the front if the remote fails. Now that I have this Yamaha and can compare the sound, this is MUCH better than the Sony. The sound is crisp and clear. This Yamaha receiver has a 5ch stereo expansion setting and the Sony did not even have that. This receiver also has a direct setting that turns off all extra parts of the stereo to attempt to get a clearer signal, including the front panel. The Sony has the nicer input ports (the ones that take the banana plugs) only on the left and right channel where this Yamaha has them for all five channels. The subwoofer output from the Yamaha is considerably better than the Sony and produces a cleaner sound. The Yamaha setup is extremely easy and takes just a few minutes with the included microphone. So far I haven't had too much difficulty with voices being quiet in movies. There are several applicable sound options for how to process movie input. The only downsides to this Yamaha are that it only has 4 HDMI inputs and doesn't support eARC. According to the marking ARC is only on the first HDMI input.
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Reviewed in the United States on December 14, 2025
E
Verified Purchase
EJ
Carnegie, US
★★★★★ 5
Excellent sound and function
Set name: 5.1 Receiver
We're very pleased with this unit. We use a 3.1 system in our TV area, stereo plus center channel and subwoofer. It's nice that this unit supports that. We get very nice imaging from this, and don't really miss the surround speakers. **We had to replace the old HDMI cables with new ones that could handle the larger bandwidth of 4K. If you're cables are 5-10 years old like ours, newer cables are required to carry a modern video signal. We like the Yamaha sound, and are able to EQ it easily to sound right for the room. I've used several receivers over the years of various brands. Yamaha consistently delivers good sound and reliable product. I've never had a Yamaha product fail and fewer than 15 years. There are other units out there with more gadgets and gizmos, bills and whistles, not to mention smoke and mirrors. We want a good sounding reliable unit that plays nice with all of our AV sources and TVs. If that's what you're looking for, look no further than this unit right here. If you get a good price on this, it's unbeatable. Sony, Onkyo, Denon, Marantz, etc. - they all make good units with signature sounds. If you aren't familiar with them, and If you can't listen to a bunch of stuff, buy this with confidence. Here's an unsolicited recommendation: high quality speakers will do more to improve your listening experience than any receiver. If you're looking for an upgrade, start with your front speakers.
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Reviewed in the United States on November 15, 2024
P
Verified Purchase
Plant ecology
Battle Creek, US
★★★★★ 5
Love my Yamahas
Set name: 5.1 Receiver
RX 385 replaces my much-loved 10 year old RX 375, which I inadvertently fried while experimenting. The 385 has some newer features, including bluetooth. The old model and this both use the handy YPAO function to tune the audio speakers' depth of field to the listening environment. It's a broadcast mic that you just plug into the front of the receiver for a few seconds to determine each speakers' distance from viewer. Kind of a sonic echo measurement of seating to speaker. It's a foolproof, remarkably clever, timesaving gizmo. The YPAO mic is absolutely included with this unit, looks like a little plastic cone. Also important to me, Yamaha has replaced the old spring clips for rear/side speakers, which are now the better screw and cap posts, as they have always been for the two front speakers. I recommend rocketfish HDMI 4k/8k cables to connect this receiver to your tv and to whatever other components you want, such as a bluray. Sound quality is excellent if your speakers are good. (I like KEFs.) Of course you may prefer wireless speakers, but I'm already committed to wired ones. I used rocktfish banana plugs to connect my speaker wires to the RX 385 receiver's speaker posts. Neat and clean. With a choice of 2 front, 2 rear, 1 center speaker, plus one coaxial plug in for a subwoofer, your movies and programs are going to sound far more detailed and staged than you'd get from the tv or a sound bar. It's a more immersive and compelling experience. (I use only 2 fronts and 2 rears and don't feel I'm missing anything.) Yamaha receivers and other components are my favorites: relatively inexpensive, well designed, solidly built, and not fussy to install. If you find yourself in a pickle there are a couple of helpful youtube videos. I find with the RX385 again that Yamaha does not disappoint me.
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Reviewed in the United States on April 18, 2023
P
Verified Purchase
phil
New York, US
★★★★★ 5
Great unit
Set name: 5.1 Receiver
Works great, was worried about having my hdmi run through it thinking id have to use it all the time but leaving it off the signal still goiles through to the TV. Very rleasy to hook up and very easy to use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026

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