Thermostat Delete Plug | BMW ZF 8HP51 8HP76 Transmission Cooler Upgrade

Eliminate a common failure point in BMW ZF8HP transmissions with the ATS Thermostat Delete Plug.

BMW-equipped ZF8HP transmissions utilize a thermostat integrated into the cooler line adapter. During cold starts, this thermostat remains closed, preventing transmission fluid from circulating through the cooler until a target operating temperature is reached. While effective in theory, these thermostats can stick or fail, restricting cooler flow and causing elevated transmission temperatures.

Excessive transmission heat is one of the leading contributors to premature clutch wear and failure, especially in high performance, drag racing, and upgraded power applications.

The ATS Thermostat Delete Plug removes this restriction by allowing continuous transmission cooler flow, helping maintain lower fluid temperatures and improving overall transmission reliability.

Features & Benefits:

• Eliminates OE thermostat restriction in BMW ZF8HP transmissions
• Maintains continuous transmission cooler flow
• Helps reduce transmission fluid temperatures
• Reduces risk of heat-related clutch wear and premature failure
• Ideal for performance, racing, and high horsepower applications
• Simple upgrade designed to improve long-term transmission durability

At Applied Torque Solutions, every product is designed with one goal in mind: increasing transmission reliability and longevity. The ATS Thermostat Delete Plug is another step toward building stronger, more dependable ZF8HP platforms.