Includes all items shown
FITS: 4L80E / 4L85E
(1991-On)
Installation does not require transmission removal
SK4L80E
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Eliminates high pressure parts breakage
Includes boost valve and pressure relief valve
Reduces direct clutch burnup
Eliminates soft 2-3 slide
Resolves bang 1-2
Reduces low pressure due to solenoid filter breakup
Eliminates missing shifts with no diagnostic
codes
Includes modified high quality boost bushing and valve