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![4L80E Transmission Overdrive Planet & Drum Set 1991-2001 Chevrolet GMC - TN Powertrain](http://tnpowertrain.com/cdn/shop/products/UK34821_436x436.jpg?v=1680536906)
Manufacturer Part Number: 8661601
OE/OEM Part Number: 8680911
This good used overdrive planet fits General Motors 4L80E automatic transmissions 1991 to early 2001 having the first design overrun clutch housing. Set includes complete drum with sprag (.309" diameter rollers).