Front view showing main aluminum component and o ring grooves EGR Performance 6L80 transmission thermostat bypass kit for GM vehicles with 6L80 6L90 8L90 transmissions
Side view displaying overall component length and smooth profile EGR Performance 6L80 transmission thermal bypass valve kit for GM vehicles with 6L80 6L90 8L90 transmissions
Close up of precision machined T6061 aluminum surface finish EGR Performance 6L80 transmission thermostat bypass tool for GM vehicles with 6L80 6L90 8L90 transmissions
Complete kit laid out with all included buna o rings EGR Performance 6L80 transmission thermostat bypass kit for GM vehicles with 6L80 6L90 8L90 transmissions
Close up of fitted buna o rings on the aluminum body EGR Performance 6L80 transmission thermal bypass valve for GM vehicles with 6L80 6L90 8L90 transmissions
Illustration showing component fit into stock bypass housing EGR Performance 6L80 transmission thermostat bypass kit for GM vehicles with 6L80 6L90 8L90 transmissions
Front view showing main aluminum component and o ring grooves EGR Performance 6L80 transmission thermostat bypass kit for GM vehicles with 6L80 6L90 8L90 transmissions
Side view displaying overall component length and smooth profile EGR Performance 6L80 transmission thermal bypass valve kit for GM vehicles with 6L80 6L90 8L90 transmissions
Close up of precision machined T6061 aluminum surface finish EGR Performance 6L80 transmission thermostat bypass tool for GM vehicles with 6L80 6L90 8L90 transmissions
Complete kit laid out with all included buna o rings EGR Performance 6L80 transmission thermostat bypass kit for GM vehicles with 6L80 6L90 8L90 transmissions
Close up of fitted buna o rings on the aluminum body EGR Performance 6L80 transmission thermal bypass valve for GM vehicles with 6L80 6L90 8L90 transmissions
Illustration showing component fit into stock bypass housing EGR Performance 6L80 transmission thermostat bypass kit for GM vehicles with 6L80 6L90 8L90 transmissions

6L80 Thermostat Bypass Kit for 6L80 6L90 8L90 Transmissions for GM Vehicles 2006 to 2023

$32.28
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Details
Model Year Range Engine
Chevy Silverado 1500/2500/3500 2006-2023 4.8L, 5.3L, 6.0L, 6.2L V8
GMC Sierra 1500/2500/3500 2006-2023 4.8L, 5.3L, 6.0L, 6.2L V8
Chevy Tahoe/Suburban 2007-2023 5.3L, 6.0L, 6.2L V8
GMC Yukon/Yukon XL 2007-2023 5.3L, 6.0L, 6.2L V8
Chevy Camaro/Corvette 2008-2023 6.2L V8
Cadillac Escalade/Escalade ESV 2007-2023 6.2L V8

Product Overview

This transmission thermostat bypass kit replaces the factory thermal bypass valve to allow consistent, unrestricted coolant flow to your transmission cooling system. It is precision manufactured from durable materials to withstand extreme operating temperatures and harsh under-hood conditions for long-lasting reliable performance.

Common Faults & Replacement Symptoms

  • Transmission overheating warning lights appearing during regular operation or towing
  • Premature transmission fluid degradation and burnt fluid smells caused by high operating temperatures
  • Stuck factory thermal bypass valve restricting coolant flow to the transmission cooler
  • Slipping gears or delayed shifting caused by excessive transmission operating temperatures
  • Reduced transmission lifespan caused by repeated overheating events

Ideal For

  • DIY automotive enthusiasts looking to upgrade their transmission cooling system for improved reliability
  • Owners of GM trucks and SUVs that regularly tow heavy loads or drive in high-temperature climates
  • Professional automotive repair technicians looking for a high-quality replacement part for customer vehicles
  • Performance vehicle owners looking to eliminate transmission overheating risks during spirited driving
Shipping Details

Ontario CA / Springdale OH / Newark NJ
Package List

Complete Package Contents

  • 1 x CNC machined aluminum thermostat bypass valve
  • 2 x Buna O-rings for installation
Delivery Time

2-5 working days inland in the United States

Product details

Specifications

  • Construction: Aircraft-grade T6061 CNC machined aluminum
  • Seals: Buna O-rings for leak-proof performance
  • Finish: Polished corrosion-resistant coating
  • Weight: 1.76 ounces
  • Package dimensions: 2.8 x 1.77 x 1.02 inches
  • Compatibility: 6L80, 6L90, 8L90 GM automatic transmissions

Core Advantages

  • Precision CNC machined to ensure a perfect fit into the stock bypass housing with no modifications required
  • Aircraft-grade aluminum construction offers superior corrosion resistance and durability compared to factory plastic units
  • High-quality Buna O-rings provide a reliable leak-proof seal under all operating conditions
  • Improves transmission cooling efficiency to reduce overheating risks and extend transmission lifespan
  • Simple installation process with basic hand tools for experienced DIY users

OEM Quality & Compliance Certification

This6L80 transmission thermostat bypass kitis manufactured to meet or exceed original equipment specifications for fit, form, and function. It is produced in an ISO 9001 certified facility and complies with all SAE automotive aftermarket quality standards for transmission components. It is designed as a direct replacement for the factory thermal bypass valve for compatible GM vehicles.

Replace Part Numbers

This kit is a direct replacement for the following OEM and aftermarket part numbers: replacement for 24239529, replacement for 24271762, replacement for D004-1Pc. Always cross-reference your existing part number prior to purchase to ensure compatibility.

Complete Package Contents

  • 1 x CNC machined aluminum thermostat bypass valve
  • 2 x Buna O-rings for installation

Installation & Fitment Notes

  • Always verify your vehicle is equipped with a 6L80, 6L90, or 8L90 transmission before attempting installation
  • Apply a small amount of transmission fluid to the O-rings prior to installation for smoother insertion and to prevent seal damage
  • Professional installation is highly recommended, no installation instructions are included with this product
  • This kit is not compatible with modified or aftermarket transmission bypass housings

Warranty & Support

All EGR Performance 6L80 thermostat bypass kits come with a 1-year manufacturer warranty against defects in materials and workmanship. If you encounter any issues with your product, please contact our customer support team at service@egrperformance.com for assistance with returns, replacements, or technical questions.

Shipping & Delivery Information

We offer shipping across all 50 US states, Canada, and Mexico for all automotive parts orders.

  • Standard free shipping is available for all orders over $50, with delivery within 3-7 business days
  • Expedited 2-day and overnight shipping options are available at checkout for an additional fee
  • All orders are processed within 24 business hours of payment confirmation, excluding weekends and US public holidays
  • Tracking information is sent to your registered email address as soon as your order is dispatched

Why Choose This Product

When you purchase an EGR Performance 6L80 thermostat bypass kit, you get a high-quality, reliable part designed specifically for your GM vehicle. Our products are engineered to solve common factory transmission cooling issues, with strict quality control processes to ensure consistent performance. We stand behind all our products with a comprehensive 1-year warranty and responsive customer support to ensure your complete satisfaction.

Long-Term Maintenance Tips

  • Inspect the bypass valve and O-rings for leaks or damage every time you perform a transmission fluid flush
  • Regularly check your transmission operating temperature to ensure the cooling system is functioning correctly
  • Use only manufacturer recommended transmission fluid to maintain optimal performance and extend component lifespan
  • Clean the bypass housing thoroughly during installation to remove any debris or old seal material that could cause leaks
  • If you regularly tow heavy loads, consider upgrading your transmission cooler for additional cooling capacity

Vehicle Fitment Description

This6L80 thermostat bypass kitfrom EGR Performance is designed for GM vehicles equipped with 6L80, 6L90, or 8L90 automatic transmissions manufactured between 2006 and 2023. It fits popular models including for Chevy Silverado, for GMC Sierra, for Chevy Tahoe, for GMC Yukon, for Chevy Camaro, and for Cadillac Escalade with compatible V8 engine configurations.

Compatible Vehicle Trim & Configuration Details

  • Fits 2WD and 4WD configurations for all compatible GM truck, SUV, and performance car models
  • Compatible with all trim levels including WT, LT, LTZ, SLE, SLT, Denali, SS, Z71, and High Country
  • Works with regular, extended, and crew cab configurations for applicable pickup truck models
  • Not compatible with vehicles fitted with aftermarket transmission swaps that do not use the stock 6L80/6L90/8L90 bypass housing
  • Always confirm your transmission model is 6L80, 6L90, or 8L90 prior to purchase to ensure fitment

TheEGR Performance 6L80 thermostat bypass kitis a high-quality replacement part engineered to improve transmission cooling performance for compatible GM vehicles with 6L80, 6L90, or 8L90 transmissions. Built to OE specifications for a perfect fit, this kit eliminates common overheating issues and extends the service life of your automatic transmission.

  1. Dispatch Time: Orders will be shipped within 24 hours after successful payment.
  2. Delivery Time: 2-5 business days after dispatch (delivery speed depends on proximity to warehouse location).
  3. Return Window:7 days for unsatisfactory items45 days for quality-related issues
  4. Refund Processing: Refunds will be processed back to your original payment method within 2-4 business days after receiving the automated refund confirmation email (subject to bank verification).

FAQ (Frequently Asked Questions)

Will this 6L80 thermostat bypass kit fit my 2012 Chevy Silverado 1500 with a 5.3L V8?

This kit will fit your 2012 Chevy Silverado 1500 if it is equipped with a 6L80 automatic transmission. Always confirm your transmission model prior to purchase to ensure fitment.

What material is this 6L80 thermal bypass valve made from?

This bypass valve is precision CNC machined from aircraft-grade T6061 aluminum with a polished corrosion-resistant finish, and includes high-quality Buna O-rings for a leak-proof seal.

Does this product come with installation instructions?

No, installation instructions are not included with this product. Professional installation is highly recommended for all automotive transmission components.

What is the warranty coverage for this 6L80 transmission bypass kit?

All EGR Performance 6L80 thermostat bypass kits come with a 1-year manufacturer warranty against defects in materials and workmanship.

Will this kit reduce transmission operating temperatures?

Yes, this bypass kit eliminates the restrictive factory thermal bypass valve to allow consistent coolant flow to your transmission cooler, reducing overheating risks and lowering average operating temperatures.

Is this kit compatible with my 2018 GMC Sierra Denali with a 6.2L V8?

This kit is compatible with your 2018 GMC Sierra Denali if it is equipped with an 8L90 automatic transmission, which is standard on 6.2L V8 Sierra models from that year range.

What is included in the package when I purchase this kit?

Each package includes 1 CNC machined aluminum thermostat bypass valve and 2 Buna O-rings required for installation.

Can I install this bypass kit myself if I have basic automotive repair experience?

While experienced DIY users can install this kit with basic hand tools, we always recommend professional installation to ensure correct fitment and avoid damage to your transmission system.

Is this kit compatible with aftermarket transmission coolers?

Yes, this bypass kit works with both factory and aftermarket transmission cooling systems for compatible 6L80, 6L90, and 8L90 GM transmissions.

How do I contact customer support if I have an issue with my order?

If you have any questions or issues with your 6L80 thermostat bypass kit, you can contact our support team at any time via email at service@egrperformance.com.