The output planetary assembly in GM 6L90E transmissions features a lube dam that directs oil flow to the planetary feed passages. Over time, sludge and debris build up in the lube dam, restricting lubrication. This often leads to failures in the planetary assembly, especially after an overhaul. Additionally, the large OE pinion pins don’t provide adequate lubrication to the small gears, causing damage to gears, pins, bearings, needles, and washers. Protect your planetary assembly with Sonnax’s Output Planet Saver Kit 104584-90K, which includes upgraded pinion pins to ensure continuous, essential lubrication to the small gears.

Sonnax 104584-90K Output Planet Saver Kit Includes:

• (6) Batwing Thrust Washers Mirrored
• (6) Batwing Thrust Washers
• Output Planetary Lube Dam
• (12) Large Thrust Washers
• (6) Small Thrust Washers 
• (3) Large Needle Spacers 
• (3) Small Needle Spacers 
• (3) Large Pinion Pins w/Lube Upgrade 
• (3) Small Pinion Pins 
• Roller Bearing
• (234) Short Roller Needles
• (69) Long Roller Needles 
• (3) Thrust Bearings of Various Sizes