DoctorDiff Drivetrain

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8 3/4" Pinion Snubber
$45.00

Powder-coated OEM Mopar passenger car 8.75" pinion snubber (various years). 

Out-of-stock
Pinion seal for 741 or 489 case
8 3/4" Pinion Seal
$8.00
For 741 or 489 Case

Premium quality Mopar 8.75" pinion seal.  Choose 742 or 741/489 case

In stock
 
Select a Variation
8 3/4" or Dana 60 Pinion Yoke Repair Sleeve
$15.00
Repair sleeve fits 10 or 29 spline Mopar 8.75" and Dana 60 pinion yokes. 
In stock
+ −
489 Case
8 3/4" Nodular Iron Casting
$275.00

New, Mopar  8 3/4" nodular iron 489 casting includes forged steel caps and billet steel adjusters.

In stock
Select options
8 3/4" Minimum Installation Kit
$43.00
741

Handy kit includes the small parts required to perform a Mopar 8 3/4" gear swap.

In stock
 
Select a Variation
30 spline 8 3/4" spool
8 3/4" Lightweight Spool
$100.00
30 Spline

Lightweight 30 and 35 spline spool fits all 8 3/4" castings and all ratios.

In stock
 
Select a Variation
8 3/4" Inner Axle Seal
$4.00
Premium quality inner axle seal fits OEM '65-'74 8.75" housings
In stock
+ −
8 3/4" Helical Gear Sure-Grip ("Sure-Trac II")
$595.00
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
Select options
8 3/4" Eaton Truetrac Differential
$575.00

8.75" Eaton True-Trac fits all 8.75" castings all ratios and all stock axles.

Out-of-stock
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