TCI 4L60E Boost Valve Assemblies

Operating line pressure is the lifeblood of any automatic transmission by providing the clamping force on the clutches and bands. Oftentimes, increasing line pressure is a requirement when increasing driveline output. TCI's new 4L60E boost valve assemblies provide you the means of elevating your line pressure while also addressing wear issues that may actually have your transmission running at a lower level of pressure than GM intended! Features include: * Larger valve diameter over stock which yields 10-15% higher line pressure * O-rings on boost sleeve which prevent loss of boost signal pressure * Sleeve constructed from Alcoa Deltalloy 4032 & valve is hard-coat anodized which prevents wear between the mating parts Show Less