Sonnax

4L60E-LB1

Sonnax 4L60E Boost Valve and Spring Kit .490''

Hard Parts

Achieve shorter shifts and increased torque capacity without creating low-speed harshness
Improved band and clutch holding capacity for increased durability
Progressive pressure increase as driving conditions become more demanding
All the benefits of increased line pressure without overloading the pump at idle
Simple and affordable drop-in solution with no special tools or reaming required

Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs andlarge ratio boost valves designed to work together to provide progressive pressure increases asdriving conditions become more demanding.Our pressure regulator springs are approximately 10% stronger than OE and more conservativein impact than other aftermarket "kit" springs. Large ratio boost valves provide higherpressure incrementally and when it is needed the most. The combination of these springs andvalves in a Sonnax kit gives you the best of both worlds: a modest pressure increase at the lowend, with a high-end pressure that is equal to or greater than that of other aftermarket "kit"springs.

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