GM-O-10V is an oversized version of GM-O-2V. It can be used in GM 4L80-E torque converters with worn piston bores.
Be sure to resize the bore of the piston/damper assembly to 2.003” ±.005” (50.88mm ±0.13mm). To avoid any risk of the O-ring coming out of the groove, do not exceed this recommended bore specification.