6L80 Transmission Parts
6L80E/6L90E Kolene Steel Module
$289.00
This 6L80/6L90E kolene steel module kit comes with all the Steels needed to rebuild your 6L80/6L90E Transmission. These Kolene steels are stock thickness and designed to be a drop in for your factory unit. These...
6L80E / 6L90E Oversized AFL Valve
$72.00
In GM 6L45, 6L50, 6L80, 6L90 units the actuator feed limit (AFL) bore wear results in low pressure at the shift and control solenoid valve assembly. The OE AFL Valve has a large reaction area...
6L80E Oversized Pressure Regulator and Boost Valve kit
$87.00
GM 6L45E, 6L50E, 6L80E, 6L90E units can suffer from high or low line pressure and or overheated transmission issues if the pressure regulator valve or other valve train components are worn, damaged, or stuck. Most...
6L80E / 6L90E, Oversize Boost Valves
$42.00
GM 6L45, 6L50, 6L80, 6L90 boost valves provide feedback pressure to their respective clutch regulator valves, helping control apply and release of the clutch. Pressure control solenoid fluid pressure reacts with the valve to control...
Sonnax Piston Kit 6L80E / 6L90E, 4-5-6 Heavy Duty
$149.00
The Sonnax apply ring increases surface area between the apply piston and OE waved clutch plate, resulting in more even distribution of apply force to clutch plates. The Sonnax backing plate minimizes flexing / bowing...
Sonnax 6L80E 1-2-3-4 Piston
$96.00
GM 6L80E / 6L90E 1-2-3-4 pistons commonly crack due to cantilevered stress on the cast material. The OE part has been through several revisions in an attempt to correct this, but all OE versions are...
Sonnax 6L80E High Capacity 3-5-R Apply Ring
$69.00
Sonnax high capacity 3-5-R apply ring is shorter than the OE apply ring. When the Sonnax apply ring is installed and the OE waved plate is eliminated, this allows for one additional OE thickness friction...
6L80E / 6L90E, Sonnax High-Performance Pump Slide
$10.00
Sonnax high-performance pump slide spring for GM 6L80E / 6L90E transmissions is able to hold the pump slide in a maximum-volume position to hold line pressure and prevent clutch failure, despite increased pressure and high...
6L80E / 6L90E Zip Kit, Sonnax
$295.00
This Zip Kit fits 6L45E, 6L50E, 6L80E, and 6L90E transmissions and targets the root of multiple complaints by sealing the critical circuit pressure losses so common with this platform. This exclusive kit contains very uniquely...