An easy, no-hassle cost-effective drop-in Cooler Flow Bypass Upgrade Kit for General Motors 6L80, 6L90, 8L90 and Allison transmissions.
Provides all-time cooler flow regardless of temperature
Prevents overheating
Reduces transmission fluid temperature
Eliminates thermostatic assembly
Allows you to accurately check fluid level immediately after install without having to wait or go through a warm-up cycle
Fits 2014-on 6L80, 6L90, 2016-on 8L90, 2017-19 Allison 1000
Cooler bypass plug
O-ring for cooler bypass plug
Pin
Replacement O-ring for thermostatic assembly
If you have any problems, please feel free to contact us befor case or return.
Dear customer,
If you have any questions,you can contact us,we will provide the best service for you.
The item will be shipped within 24 hours on payment received except the holidays.(except weekends & official holidays). You can log on to eBay to check your logistics tracking number.
Please confirm address before purchase, and cannot change address once purchased.
If you need to receive the item quickly, please contact us, you can pay the postage to choose other logistics.
Please purchase and pay for the item through the eBay,only accpected the paypal payment.
Please contact us first when return, exchange and refund is required. Any direct return of purchased items will not be processed.
Item must be returned in new condition, as received with all accompanied accessories and literature, including the factory carton. Shipping, handling is not refundable unless item is returned because of defect.
Our goal is complete customer satisfaction. We will be very honored to provide you with quality service.
If there is an issue with shipping or the item you purchased please contact us via ebay message or call us before opening a case or leaving feedback.We will try our best to resolve any kind of issue.
Dear customer,
If you have any questions,you can contact us,we will provide the best service for you.
The item will be shipped within 24 hours on payment received except the holidays.(except weekends & official holidays). You can log on to eBay to check your logistics tracking number.
Please confirm address before purchase, and cannot change address once purchased.
If you need to receive the item quickly, please contact us, you can pay the postage to choose other logistics.
Please purchase and pay for the item through the eBay,only accpected the paypal payment.
Please contact us first when return, exchange and refund is required. Any direct return of purchased items will not be processed.
Item must be returned in new condition, as received with all accompanied accessories and literature, including the factory carton. Shipping, handling is not refundable unless item is returned because of defect.
Our goal is complete customer satisfaction. We will be very honored to provide you with quality service.
If there is an issue with shipping or the item you purchased please contact us via ebay message or call us before opening a case or leaving feedback.We will try our best to resolve any kind of issue.
On Mar 19, 2026 at 00:34:06 PDT, seller added the following information: