The 700R4 sunshell is part of the planetary gear system. Using a ring gear that is connected to it, it works with the lower drum to turn the system. If this piece becomes damaged, you could potentially lose the whole forward drive of your vehicle. Provided below are a reaction shell variety and a heavy duty for added performance.
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700R4/4L60 Reaction Shell 1982-UP
$44.95 $39.55
700R4/4L60/4L60E Heavy Duty Sun Shell This Heavy Duty Sunshell is rated up to 500HP. The factory sun shell is a weak point on the 700R4/4L60E transmissions and the New & improved Heavy Duty Sunshell is the solution!
$49.95 $39.95

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