Overflow Tank - Trans Fluid - GM TH400

The ATI Performance Overflow Tank for Trans Fluid – GM TH400 is a specialized expansion reservoir designed to manage transmission fluid volume changes during high-heat driving conditions. This tank is particularly beneficial for those running a TH400 transmission in modified or performance vehicles, where fluid expansion can be a significant concern during sustained throttle or track use.

Engineered with a compact and efficient design, this overflow tank integrates seamlessly into existing TH400 installations without requiring extensive modifications. It features durable construction that resists thermal cycling and vibration, making it suitable for the tight confines of an engine bay. The tank is vented to atmospheric pressure to prevent pressure buildup that could damage seals, while its overflow capacity is calibrated to handle normal thermal expansion.

This overflow tank is ideal for street rodders, drag racers, and anyone with a modified TH400. It is especially useful for those who frequently operate under high-stress conditions, such as towing or racing, where maintaining optimal fluid levels is crucial for transmission durability and performance.