Repair and prevent common concerns and save the planetary assembly by installing Sonnax output planet saver kits #104584-80K and #104584-90K for GM 6L80 and 6L90 transmissions, respectively. These kits include upgraded pinion pins to supply continuous, critical lube to the small gears.
New Sonnax GM 6L80, 6L90 Output Planet Saver Kits
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