Transmission Cooling Upgrade Kit for GM 6L80 6L90 8L90, Transmission Cooler Upgrade Kit, Transmission Cooling Upgrade Kit

Description
This upgrade kit is specifically designed to replace the factory-installed cooling bypass thermostat, which is prone to failure. It improves the flow path of the valve core, increases the fluid passage volume, and enhances heat dissipation efficiency. It fits all Chevrolet Silverado and GMC Sierra pickup truck models equipped with 6L80, 6L90, or 8L90 transmissions, and is suitable for a variety of driving scenarios, including daily commuting, off-road adventures, and heavy-duty towing. Long-term use helps maintain stable transmission oil temperature, reduces wear caused by high temperatures, and extends the overall service life of the transmission.

Key Features
【1】Powerful Temperature Control: It improves the transmission fluid circulation path, eliminates the problem of oil blockage caused by a stuck factory-installed bypass valve, and maintains stable transmission fluid temperature. This prevents the transmission from overheating during cargo hauling and heavy-load towing, providing greater peace of mind during long-distance, high-intensity driving.

【2】Built to Last: The hard-wearing valve core is made of precision-machined metal with high hardness. The sealing rings and retaining plates are tolerant to corrosion from transmission fluid and are less prone to aging or cracking even after long-term use under alternating high and low temperatures.

【3】Complete Set of Accessories: The set includes the valve core, a mounting plate with rubber gaskets, large and small O-rings, and a snap ring, providing a one-step repair process.

【4】Easy to Install: It replicates the OEM mounting points, with hole positions precisely aligned to the vehicle’s original interfaces. Without grinding or modification of lines, installation and removal can be completed with standard automotive tools. Both beginners and repair shops can finish the job quickly, and the design fits the original vehicle structure without damaging the vehicle’s condition.

【5】High Sealing Performance: The mounting plate features toothed rubber gaskets, while the valve stem’s dual-layer sealing rings provide multi-layer protection against fluid leakage. This resolves potential hazards caused by fluid leakage and oil starvation due to aging components in the original vehicle, which can damage the transmission.

Application
It fits all Chevrolet Silverado and GMC Sierra pickup truck models equipped with 6L80, 6L90, or 8L90 transmissions, and is suitable for a variety of driving scenarios, including daily commuting, off-road adventures, and heavy-duty towing.

Specifications
Color: Silver
Material: Aluminum Alloy
Process: CNC
Gross Weight: 0.05 kg / 0.11 lbs
Net Weight: 0.045 kg / 0.099 lbs
Package Size: 10 × 8 × 4 cm / 3.94 × 3.15 × 1.57 in

Package Included
1* Metal Valve Core
1* Mounting Plate with Toothed Rubber Gasket
1* Large O-ring
1* Small O-ring
1* Snap Ring

Notes
Please allow a slight color difference caused by the shooting light and a 1-3 cm error due to manual measurement, and make sure you do not mind before ordering.