6L80E High Performance Boost Valve, #6L80-LB1.

$ 49.00

SKU: 6L80-LB1, 6L80-LB1, 6l80 rm 612 Categories: , Tags: ,


6L80E High Performance Boost Valve

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 kit springs.



  • Desired does not meet actual psi.

  • 265 psi @ 110 Duty cycle factory style



These complaints can be caused by wear of the end plugs
allowing valuable actuator/solenoid feed pressure to leak at
the various regulator valves and Reverse and latch pressure
to leak at the clutch select valves.



This Sonnax O-ringed end plug kit restores
correct circuit pressures. The O-ring provides
additional sealing to reduce hydraulic losses at
critical circuits.


Features & Benefits

• 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


Additional information

Weight 1 lbs
Dimensions 6 × 6 × 5 in