DoctorDiff Drivetrain Components

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8 3/4" Ring and Pinion

$185.00
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All ratios are not available for all cases
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8 3/4" ring and pinion.

Available ratios depend on the case (741, 742, 489).

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489 case kit
8 3/4" bearing rebuild kit
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Mopar 8 3/4" 489, 741, or 742 case bearing rebuild kit

8 3/4" Helical Gear Sure-Grip ("Sure-Trac II")
$545.00
DoctorDiff Sure-Trac II is a fully machined, forged steel 8.75" differential with helical worm gears similar to an Eaton True-Trac.
In stock
Green Bearings (PAIR)
$65.00

Mopar Green Bearings for 8 3/4" and Dana 60 rearends

In stock