68RFE transmission thermal bypass block

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The 68RFE transmission thermal bypass block is designed to regulate transmission fluid flow based on operating temperature, helping protect the transmission and maintain consistent performance in demanding conditions. During cold starts, the bypass block redirects transmission fluid around the cooler, allowing the transmission to reach operating temperature faster. Once the fluid reaches the correct temperature range, the valve opens and directs flow through the transmission cooler to help control heat and maintain optimal operating conditions. By managing transmission fluid temperature more effectively, the thermal bypass block can help improve shift quality, reduce thermal stress, and support longer transmission life — particularly in towing, heavy-duty, and high-performance applications. Features Regulates transmission fluid flow automatically Helps transmission warm up faster during cold starts Maintains optimal operating temperature Reduces excessive heat build-up Supports smoother and more consistent transmission performance Durable construction for heavy-duty use Show more