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Valve, Manual, 4L80-E, GM (91-UP)

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Manual Valve
Price: $98.18
Part Number: TAT-34994-16K-SX
The manual valve in 4L80-E transmissions can break or wear the valve body because of its excessive length and thin stem diameters. Sonnax now offers an upgraded, redesigned manual valve kit, 34994-16K, which has lengthened spools with exhaust slots for increased bore support and increased stem diameters. It is common for the AFL filter to blow out and crack, and for the OEM end plug to leak, allowing AFL oil leakage. Sonnax has provided a replacement end plug to ensure proper hydraulic control.

Features & Benefits

Manual valve is made from hard-anodized aluminum to resist wear.
Valve has lengthened spools with exhaust slots for increased bore support.
Stem diameter has been increased and annular grooves have been added to the furthest inboard spool.
AFL end plug is machined from of high-quality aluminum to resist wear.
O-ring on the outside diameter prevents leakage between the plug and valve body.
Kit can be installed without valve body modifications.

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