Sonnax 400-LB1 TH400 Transmission Boost Valve & Sleeve Progressive Line Pressure

Brand: SonnaxOther Part Number: S34507FType: Performance Boost Valve KitItems Included: Boost Valve, Sleeve, Spring, O-ringsManufacturer Part Number: 400-LB1Universal Fitment: YesVintage Part: NoPerformance Part: Yes TH400 Line Pressure Booster Kit Part No. 400-LB1 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 increase at the low end, with a high-end pressure that is equal to or greater than that of other aftermarket