Dovabietar 6L80 bypass valve for GM transmissions improves cooling and reliability.
Dovabietar CNC machined aluminum body with precise fit for stock bypass housing.
Dovabietar Buna O-rings seal fittings for smooth, leak-free installation.
Dovabietar thermal bypass kit helps manage heat and support transmission performance.
Dovabietar easy-installation concept shows proper alignment and guided assembly.
Dovabietar 6L80 bypass valve for GM transmissions improves cooling and reliability.
Dovabietar CNC machined aluminum body with precise fit for stock bypass housing.
Dovabietar Buna O-rings seal fittings for smooth, leak-free installation.
Dovabietar thermal bypass kit helps manage heat and support transmission performance.
Dovabietar easy-installation concept shows proper alignment and guided assembly.

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,...
Vendor: Dovabietar
Availability: In stock
£33.36
£33.36
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Dovabietar 6L80 bypass valve for GM transmissions improves cooling and reliability.

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

£33.36
Dovabietar 6L80 bypass valve for GM transmissions improves cooling and reliability.
Dovabietar CNC machined aluminum body with precise fit for stock bypass housing.
Dovabietar Buna O-rings seal fittings for smooth, leak-free installation.
Dovabietar thermal bypass kit helps manage heat and support transmission performance.
Dovabietar easy-installation concept shows proper alignment and guided assembly.

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

£33.36
Description
Description
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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.

FAQ

Q: Is this compatible with my GM 6L80/6L90/8L90 transmission?

A: Yes—designed for 6L80, 6L90, and 8L90 bypass configurations. Verify your model before purchase.

Q: What warranty and support come with the kit?

A: 36-month warranty and 24/7 customer service for installation help or issues.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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