Dovabietar 1Pack 6L80 Thermostat Bypass Kit – CNC Aluminum, Buna O-rings, 6L80/6L90/8L90 Compatible

Overview

The Dovabietar 1Pack 6L80 Thermostat Bypass Kit is a precision-made solution for GM automatics featuring 6L80, 6L90, or 8L90 bypass paths. Crafted to tight tolerances, it pairs a CNC-machined aluminum valve with Buna O-rings for a dependable seal and a clean, factory-like fit.

Why this kit stands out

Made from aircraft-grade T6061 aluminum, the valve resists corrosion and stands up to heat and vibration. The design is machined to fit snugly into the stock bypass housing, helping you avoid misalignment and leaks during service or upgrades.

In real-world terms, this kit is about reliability under daily driving and tougher workloads. The O-rings are designed to compress evenly, and the surface finish reduces friction as the bypass assembly operates, supporting steady operation even as temperatures fluctuate.

Key benefits

• Broad GM compatibility: Works with 6L80, 6L90, or 8L90 bypass configurations. Always verify your model before purchasing.
• Precision build: CNC-machined T6061 aluminum with Buna O-rings for corrosion resistance and a precise fit.
• Easy installation: Pro tip—apply transmission fluid to the O-rings to ease seating and protect seals.
• Cooling potential: Helps manage temperatures by supporting proper bypass flow, which may reduce overheating risk.
• Support & warranty: 36-month warranty and 24/7 customer service for help if needed.

What’s included

• 1-pack thermostat bypass kit, including the valve and Buna O-rings
• Intended for use with specific GM transmissions (verify your model)

Installation tips and care

Before you start, have fresh transmission fluid handy and follow the manufacturer’s guidance for seating. A light application of fluid on the O-rings minimizes friction, helping you achieve a smooth, secure seal without damage.

Warranty and support

We back this kit with a 36-month warranty and around-the-clock support. If you run into questions, contact us any time for guidance.