Thermostat Bypass Plug Compatible with GMC Cadillac Chevrolet Silverado 6L80 6L90 8L90 Transmission Cooler Barbell Cooler Change Hot Melt Bypass Plug-Single Ring(1 Pack)

Broad Vehicle Compatibility Perfectly fits for GMC, Chevrolet and Cadillac vehicles equipped with 6L80, 6L90 or 8L90 automatic transmissions (model years 2014, 2015, 2016, 2017, 2018, 2019, 2020). This versatile plug is designed to meet the transmission cooling needs of a wide range of GM vehicles. Premium Aluminum Alloy Construction Manufactured from high-grade aluminum alloy for exceptional strength and long-lasting durability. Features excellent corrosion and rust resistance, ensuring reliable performance even in extreme driving conditions and temperature fluctuations. The polished silver finish provides a clean, professional appearance that matches your vehicle's engine bay components. Airtight Leak-Proof Seal Comes pre-installed with high-quality rubber O-rings that create a tight, airtight and leak-proof seal. This prevents transmission fluid leaks and ensures maximum cooling system efficiency, protecting your transmission from overheating and premature wear. Direct Replacement, Easy Installation This is a direct fit replacement for your original transmission thermostat bypass plug. No specialized tools, modifications or extensive mechanical knowledge required. Simply insert it into the existing bypass valve opening for quick installation and instant improvement in transmission cooling performance. Cost-Effective Maintenance Solution Save hundreds of dollars on expensive transmission repairs and replacements. This affordable upgrade helps maintain optimal transmission operating temperatures, extending the lifespan of your transmission. Built to strict quality standards for dependable long-term performance.

• Fitment:This Transmission Thermostat Barbell is Compatible with GMC Cadillac Chevrolet with 6l80/90 8l90 stock thermal bypass housing. It maintains steady fluid flow through the cooler, lowers operating temps, extends 6L80/6L90/8L90 life, and prevents expensive thermostat-failure repairs.
• Precision CNC-machined from aircraft-grade aluminum, this bypass plug is tough and heat-resistant. Fitted with Buna O-rings for a leak-proof seal, it’s ready to install right out of the box—no modifications needed.
• Designed for GM's vehicles with 6L80, 6L90, and 8L90 transmissions. Fit for 86774933 Thermal Bypass Valve. It’s a perfect fit for many GM models. Always confirm your transmission type and bypass housing specs before buying to avoid mismatches.
• Choice of cost performance: The sealing performance of this single-ring bypass plug can fully meet the daily working intensity of Transmission, it has same reliability as double-ring，more budget-friendly.
• Tips：Clean the bypass housing thoroughly and check for corrosion/pitting first—severe damage causes leaks and needs replacement. Smear transmission fluid on O-rings to ease installation and avoid tearing the seals.