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Stop Limited Slip Differential Chatter with Solutions from Auburn Gear!
Due to a defective OE design in 1997-2015 Ford F150s with 5.4L engines and a 9.75" rear differential, we recommend replacing the original carrier with an Auburn Gear posi (Transtar Part#: 763B715A). Additionally, be sure to use non-synthetic 80W90 with the Auburn limited slip additive that is included in the box.
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