AC Delco 6L80/6L90 Low/Reverse Bonded Piston fits GM

6L80/6L90 Low/Reverse Clutch Bonded Piston (12 Notch, 0.705" Thick, 7" OD, 3 3/8" ID) – Compatible for GM 2006-Up

This new 6L80/6L90 low/reverse clutch piston (12-notch) from AC Delco eliminates common failures like no reverse or weak 1st gear.

This direct-replacement piston (12 notch design, 0.705" thick, 7" outer diameter, 3 3/8" inner diameter) is the critical apply component for the low/reverse clutch pack in all 6L80 and 6L90 transmissions. The factory piston commonly cracks or loses its bond under heat and torque, causing internal leakage that weakens low/reverse apply — leading to no reverse, slipping in 1st gear, and rapid clutch failure. This upgraded molded piston with permanently bonded rubber seal restores full line pressure, delivers instant, firm reverse engagement and solid 1st gear hold, and protects your low/reverse clutch pack even under heavy towing or performance use.

Perfect fit for popular models including:

• Chevrolet Silverado, Tahoe, Camaro
• GMC Sierra, Yukon
• Cadillac Escalade

Symptoms of a failing low/reverse piston:

• No or delayed reverse engagement
• Slipping or flare in 1st gear
• Harsh clunk when reverse grabs
• Burnt low/reverse frictions on teardown

Don’t let a $50 piston destroy a $600 clutch pack — install the bonded low/reverse piston and get reverse & 1st gear back to factory strength.

Add this essential 6L80/6L90 rebuild part to your cart today and restore confident shifting!