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Transmission Cooling Upgrade Kit for GM 6L80 6L90 8L90, STL010 Product Description 【Instant Protection】Features a built-in safety bypass valve that ensures immediate transmission cooler filling upon startup. This eliminates dry running and provides instant protection to your transmission, especially after service or fluid change.
【Quick & Accurate Diagnosis】Allows for precise transmission fluid level checks right after installation, without the need to go through a lengthy and complicated warm-up cycle. This saves time and ensures optimal performance from the start.
【Enhanced Cooling Performance】Effectively reduces average transmission operating temperatures by up to 20%. This superior cooling capability is crucial for preventing damage during demanding situations like towing, hauling, or off-road driving.
【Extended Transmission & Fluid Life】By maintaining a lower and more stable operating temperature, this upgrade significantly minimizes the risk of thermal degradation. This protects vital transmission components and extends the service life of your ATF, saving you money on repairs and fluid changes.
【Complete & Reliable Kit】Includes everything you need for a seamless installation - the precision-engineered Superior STL010 thermo-bypass valve and a high-quality replacement gasket. Built with durable materials for long-lasting reliability.

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