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Ford Super Duty 4r100 Tranny Converter Clutch Pistons

9. Here are two very different converter clutch pistons. The top piston is the OE stamped-steel piston. Below is Wood's custom-made billet piston. Aside from sealing better, this improved piston will not warp or flex. This little touch helps apply equal pressure to the torque-converter clutch, which also helps prevent torque-converter failure.
Ford Super Duty 4R100 Transmission - The Wood Way

 9. Here are two very different converter clutch pistons. The top piston is the OE stamped-steel piston. Below is Wood's custom-made billet piston. Aside from sealing better, this improved piston will not warp or flex. This little touch helps apply equal pressure to the torque-converter clutch, which also helps prevent torque-converter failure.  View Related Article

 

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