6L80E, 104740-12, Oversized AFL Valve.
104740-12. 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 and is highly affected by side loading, which wears the valve body bore. As the bore wear increases, oil pressure is reduced to the shift solenoids, which causes which will cause solenoid and ratio codes. The same AFL loss results in lower line pressure. The Sonnax oversized AFL valve #104740-12 is a solenoid feed regulator valve that feeds the control solenoid valve assembly. The valve will restore hydraulic control to the shift solenoids.
Features & Benefits
Valve is hardcoat annodized to reduce wear
You need this if…Vacuum tests at the ports indicated (above) fail to hold the recommended minimum of 18 in-Hg