The BD Diesel 19-23 Chevrolet Silverado / GMC Sierra 1500 8L90 Cooler Bypass Delete (Part # 1061531) is designed to ensure continuous transmission cooling operation by eliminating the factory bypass valve prone to debris-related jams. This component is essential for maintaining optimal transmission temperatures, especially under demanding towing or heavy-duty conditions. By removing the OEM bypass valve, this delete provides a reliable flow path for transmission fluid, preventing overheating and reducing premature transmission wear.
The kit includes all necessary seals for installation, a magnetic service plug for easy maintenance, and replaces several OEM part numbers including 85048209, 84443930, 84963102, and 84969051. Its installation guarantees 100 percent fluid flow through the transmission cooler, promoting consistent cooling performance. This upgrade is ideal for fleet operators and heavy-duty vehicle owners seeking to improve transmission reliability and longevity, especially during prolonged towing or high-heat conditions. Designed specifically for 2019 model year Silverado 1500 and Sierra 1500 trucks equipped with the 8L90 transmission, this bypass delete is a straightforward upgrade that enhances vehicle durability and operational efficiency.
This product is manufactured by BD Diesel, a trusted name in heavy-duty diesel components, ensuring quality and durability for demanding applications. It’s engineered to keep your transmission cooler functioning effectively, reducing the risk of overheating and extending the service life of your transmission system. The design also simplifies maintenance, making it easier to keep your vehicle performing at peak levels in tough fleet environments.
Features:
- Heavy-duty design to maintain consistent transmission cooling under demanding conditions
- Premium seals and magnetic service plug included for secure installation and easy maintenance
- Ensures 100% fluid flow through the transmission cooler, preventing overheating
- Eliminates factory bypass valve prone to debris jams, improving transmission reliability
Fitment:
Chevrolet Silverado 1500 Custom 2019 to 2021
Chevrolet Silverado 1500 Custom Trail Boss 2019 to 2023
Chevrolet Silverado 1500 High Country 2019 to 2023
Chevrolet Silverado 1500 LT 2019 to 2023
Chevrolet Silverado 1500 LT Trail Boss 2019 to 2023
Chevrolet Silverado 1500 LTZ 2019 to 2023
Chevrolet Silverado 1500 PPV 2023
Chevrolet Silverado 1500 RST 2019 to 2023
Chevrolet Silverado 1500 SSV 2019 to 2021
Chevrolet Silverado 1500 WT 2019 to 2023
GMC Sierra 1500 AT4 2019 to 2021
GMC Sierra 1500 Base 2019 to 2021
GMC Sierra 1500 Denali 2019 to 2023
GMC Sierra 1500 Elevation 2019 to 2023
GMC Sierra 1500 Pro 2022 to 2023
GMC Sierra 1500 SLE 2019 to 2023
GMC Sierra 1500 SLT 2019 to 2023
GMC Sierra 1500 Limited Base 2019











