Sonnax 700R4-LB1 Line Pressure Booster Kit 4L60 (700-R4) 200-4R

Brand: Sonnax Type: Pump Components Interchange Part Number: S74507TK-1 Manufacturer Warranty: Yes Items Included: Large Ratio Boost Valve and Improved Spring Manufacturer Part Number: 700R4-LB1 Material: Steel Universal Fitment: Yes Performance Part: Yes 200-4R, 4L60, 700R4 Transmission Line Pressure Booster KitPart No. 700R4-LB1  Line pressure booster kit 700R4-LB1 fits GM 4L60 (700-R4) and 200-4R transmissions. Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together to provide progressive pressure increases as driving conditions become more demanding. Our pressure regulator springs are approximately 10% stronger than OE and more conservative in impact than other aftermarket kit springs. Large ratio boost valves provide higher pressure incrementally and when it is needed the most. The combination of these springs and valves in a Sonnax kit gives you the best of both worlds: a modest pressure