Upgrade your 68RFE at SDS with the RevMax 68RFE-929B 68RFE Transmission Cooler Thermostatic Bypass. Constructed from a high-quality Billet 6061 Aluminum, the RevMax Cooler Thermostatic Bypass Upgrade module completely fixes all the common issues with the late model 68RFE. Utilizing RevMax®s Zero Stat Technology the orifice restriction is completely removed for full flow all the time. The elimination of the orifice bottleneck located in the factory part translates into an 87% increase in cooler flow. This results in lower operating temperatures and increased transmission life. The RevMax Cooler Thermostatic Bypass Upgrade is a direct bolt-in replacement. Simply disconnect your old lines and install them onto the new bypass. SDS offers a wide selection of RevMax parts to upgrade your transmission. Features 87% Increase in Flow Increased Transmission Life Lower Operating Temperatures Billet 6061 Aluminum Construction.