6l80 6l90 Transmission Sonnax Heavy Duty 4-5-6 Clutch Apply Piston Kit


47 in stock

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GM 6L80 and 6L90 transmissions often suffer failure of the 4-5-6 clutch assembly due to OE design shortcomings. Insufficient clutch piston-to-plate apply surface area causes clutch plate failure, especially when apply pressures exceed OE specifications. The other problem is flexing and bowing of the backing plate (coning), which is a primary source of clutch failure. The heavy duty Sonnax 4-5-6 clutch apply piston kit 104960-01K addresses these weak areas in two ways: A modified OE clutch apply piston and piston dam are used in conjunction with a specially-designed Sonnax piston apply ring. A more rigid backing plate. The Sonnax apply ring increases surface area between the apply piston and OE waved clutch plate, resulting in more even distribution of apply force to clutch plates. The Sonnax backing plate minimizes flexing/bowing when clutch is applied, drastically reducing the likelihood of clutch plate distortion. Solid backing plate design outperforms OE and aftermarket plates Increased apply ring surface area strengthens and reinforces assembly Contents Apply Piston Apply Ring Piston Dam Backing PlatePLEASE NOTE WE SELL HIGH QUALITY TRANSMISSION OILS FOR ALL TYPES OF TRANSMISSIONS AT UNBEATABLE PRICES. BE SURE TO GET YOUR OIL HERE SO THAT YOU CAN SAVE EVEN MORE MONEY AND AS WELL GET IT DONE AT THE SAME TIME. ALSO, WE SELL FILTER AND PAN GASKETS THAT ARE MADE IN USA FOR ALL TRANSMISSIONS SO IF YOU ARE BUYING SOLENOIDS OR VALVE BODYS BE SURE TO GET IT WHILE YOU ARE ALREADY GOING TO BE UNDER THE TRANSMISSION PAN. CALL 561-619-0520 OR MESSAGE US. WE WILL DIRECT YOU HOW TO BUY THE OIL AND THE FILTER AND GASKET KITS ON ETSY. THANK YOU FROM ALL OF US AT FIVE STAR TRANSMISSION PARTS WHERE OUR NAME SAYS IT ALL.PLEASE CONTACT US BEFORE OPENING UP A CASE OR LEAVING US A NEGATIVE REVIEW. WE HAVE BEEN IN THE BUSINESS ALMOST 40 YEARS AND WE KNOW WHAT IT TAKES TO EARN YOUR BUSINESS AND TRUST! CALL 561-619-0520 OR 561-444-3892 TO SPEAK TO A LIVE PERSON,OR MESSAGE US. THANK YOU FOR GIVING US THE CHANCE TO PROOVE THAT THERE IS NOBODY BETTER THAN 5 STAR TRANSMISSION PARTS ON PRICE AND QUALITY