Sonnax 77777M-K 4L60E 4L60 200R4 Transmission Accumulator Valve Kit M Style

Brand: SonnaxInterchange Part Number: S74741EKManufacturer Warranty: YesFitment Type: Direct ReplacementItems Included: Accumulator Valve Kit M StyleManufacturer Part Number: 77777M-KMaterial: AluminumUniversal Fitment: YesVintage Part: NoPerformance Part: Yes 200-4R, 4L60, 4L60-E Accumulator Valve Train KitPart No. 77777M-K Fits "M" version valve trains in heavy vehicles only. Fits 4L60 '87-later auxilary valve body styles only. Valve dia. = .341". Vehicles with a GM 200-4R, 700-R4, or 4L60-E transmission can experience 1-2 light throttle abrupt or bang shifts, especially when using the 093 Corvette or 553 2nd apply servo pistons. The traditional solution is to make the servo piston apply diameter smaller, however this limits the 2-4 band life. This shift problem can occur due to sleeve wear allowing torque signal and/or accumulator pressure leakage, or when the accumulator valve is too large for the application, resulting in too much pr