2014-Up Superior STL010 Sure Cool Cooling System Upgrade 6L80,6L90,8L90

Sure Cool Cooling System Bypass for Superior STL010

This STL010 Sure Cool cooling system replacement part for Superior is designed to modify the transmission fluid thermal bypass valve on GM 6L80, 6L90, and 8L90 transmissions, cross-referenced under part number STL010.

Overview

This Sure Cool cooling system replacement part for Superior provides immediate fluid flow to the transmission cooler without waiting for the system to reach high operating temperatures. This Sure Cool cooling system replacement part for Superior helps prevent transmission overheating in demanding towing and high-load scenarios. Fleet operators and automotive technicians install this kit on GM vehicles built from 2014 and up to ensure cooler operating temperatures.

Built For Performance

• Allows immediate fluid flow to the transmission cooler for lower run temperatures.
• Features a direct-fit design compatible with GM 6L80, 6L90, and 8L90 transmissions.
• Eliminates the stock thermal bypass system that delays cooling.
• Constructed from high-grade aluminum and durable sealing components.
• Designed for 2014-up applications to reduce transmission wear.

Fits These Machines

• for Chevrolet 6L80 Transmission (2014-Up)
• for Chevrolet 6L90 Transmission (2014-Up)
• for Chevrolet 8L90 Transmission (2014-Up)
• for GMC 6L80 Transmission (2014-Up)
• for GMC 6L90 Transmission (2014-Up)
• for GMC 8L90 Transmission (2014-Up)

On-The-Job Use

• Lowering transmission oil temperatures during heavy-duty towing.
• Protecting internal transmission clutches and gears from thermal breakdown.
• Replacing failing factory thermal bypass valves on GM light trucks and SUVs.

Specs At A Glance

Good To Know

Q: What does this kit modify on the transmission cooling line? A: This kit replaces the factory thermal thermostat assembly, allowing cooler fluid to flow continuously to the radiator.

Q: Does this kit require dropping the transmission oil pan? A: No, this assembly is installed externally at the transmission lines on the side of the case.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.