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DANA 20 TRANSFER CASE



All 66-77 Broncos came with the Dana 20 transfer case. The most notable differences between the Bronco Dana 20s are the early version 66-72 known as the T-shift with 2.46 low gear, verses the J-shift which was used from 73-77 and has a 2.34 low gear.

Early 66's had a round shift knob. Later 66-72 used the T-shifter which has a push button T-handle. All 66-72s shift in a straight up and down pattern while the 73-77 used a J-shifter. It has a backwards J-shift pattern. Front output shaft and bearings, shift rails and detents are also different from early to later Dana 20s.

Dana 20 Rebuild Kits

WILD HORSES kits include all the bearings needed to build your early and later model Dana 20. Yes, you will end up with 2 bearings you don't use but this way there is no chance of coming up with the wrong bearings on rebuild day! We offer 3 levels of rebuild kits. The basic kit includes gaskets, selas and bearings. The deluxe kit adds a new cluster shaft with thrust washers and shims. The super deluxe kit has all of the above plus the adapter housing bearing.

Gear Ratio Calculation

How low can you go? Take the lowest gear in your transmission and multiply that by the low gear in your t-case and then by your ring and pinion gear.

Example 1: NP 435 first gear is 6.69 x 2.34 in your T-case x 4.11 ring and pinion = 64.34 which we would call 64 to 1. Not bad.

Example 2: Now let's throw in a Dual T-case. NP 435 first gear is 6.69 x 2 in your Super Crawler x 2.34 in your T-case x 4.11 ring and pinion = 128.68 or 128 to 1.

Click here for a printable version
Dana 20 Transfer Case Rebuild Kit Basic
Item #: 8514
Dana 20 Transfer Case Basic Rebuild Kit.
WILD HORSES kits include all the bearings needed to build your early an...  [read more]
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Dana 20 Transfer Case Rebuild Kit Deluxe
Item #: 8519
Dana 20 Transfer Case Rebuild Kit Deluxe
WILD HORSES kits include all the bearings needed to build your early and ...  [read more]
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Dana 20 Rebuild Kit - Gaskets Only
Item #: 8510
Dana 20 Transfer Case Rebuild Kit - Gaskets Only
  [read more]
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Dana 20 Seal & Gasket Kit
Item #: 8526
Dana 20 Seal & Gasket Kit
Includes all gaskets as well as both output shaft seals, shift rail seals and input sh...  [read more]
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Dana 20 Adapter Housing Double Lip Seal
Item #: 8524
Dana 20 Adapter Housing Double Lip Seal
  [read more]
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Dana 20 Adapter Housing Bearing
Item #: 8530
Dana 20 Adapter Housing Bearing
  [read more]
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Extreme Dana 20 Output System
Item #: 8280
Our completely assembled ready to bolt in Extreme duty Dana 20 output system makes replacing your 20's old output shaft ...  [read more]
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Extreme Dana 20 Output System Kit
Item #: 8272
Extreme Dana 20 Output System Kit
By far one of the weakest links in your Bronco's drivetrain is the stock Dana ...  [read more]
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Dana 20 Crawler Transfer Case Gears Kit
Item #: 8513
Have a low geared Dana 20 without breaking the bank. Is it time to rebuild your transfer case? Well, there's no time lik...  [read more]
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Dana 20 rear output shims
Item #: 8517
Rear Shims for Dana 20
  [read more]
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Atlas Speedometer Combo
Item #: 8498
Speedometer Connection for Atlas or #8280
When purchasing the Atlas or the WH #8280 Extreme Dana 20 Output S...  [read more]
Prices start at: $21.98
Various Options Available

Dana 20 front output shims
Item #: 8518
Front Shims for Dana 20
  [read more]
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Dana 20 Shaft and Thrust Washer
Item #: 8516
Dana 20 Shaft and Thrust Washer
  [read more]
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T-shifter Bushings (Pair)
Item #: 8539
T-shifter Bushings (Pair)
Replacement bushing for stock T-shifter.
  [read more]
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Shifter Knob
Item #: 8540NET
Many customers have asked us for a matching set of shift knobs. So here they are. These are easy to read, truck-style sh...  [read more]
Prices start at: $12.99
Various Options Available

T-Shifter Link Rod ( Used )
Item #: 8542
T-Shifter Link Rod ( Used )
  [read more]
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T-shifter Lock Plate (used)
Item #: 8545
T-shifter Lock Plate (used)
  [read more]
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Billet Aluminum T-Shifter Knob
Item #: 8546
Billet Aluminum T-Shifter Knob
  [read more]
Prices start at: $32.99
Various Options Available

J-shifter Twin Stick
Item #: 8555
The original twin stick for the J-shift transfer cases! Slight modification to shift rail and tunnel cover hole is neces...  [read more]
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Twin Stick Shifter Boot
Item #: 8556
Twin Stick Shifter Boot
  [read more]
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T-shifter (66-72) w/Boot
Item #: 8557
T-shifter (66-72) w/Boot.
Just unbolt your old shifter and install our new one. It mounts in the same place as ori...  [read more]
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T-Shifter Boot
Item #: 8558
T-Shifter Boot
  [read more]
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T-Shift Twin Stick
Item #: 8559
T-Shift Twin Stick
Dana 20 Twin Stick Shifters We get calls all the time about the Dana 20 being "hard t...  [read more]
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New J-shift Replacement
Item #: 8564
New J-shift Replacement
Just unbolt your old shifter and install our new one. It mounts in the same place as ori...  [read more]
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T-Case Cross Member Mounts
Item #: 8566
T-Case Cross Member Mounts
If you're replacing a clutch, transmission or transfer case, it would be a good time to...  [read more]
Prices start at: $35.00
Various Options Available

T-Case Mount Hardware Kit
Item #: 8568
T-Case Mount Hardware Kit
  [read more]
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Transfer Case Snubber
Item #: 8569
Transfer Case Snubber
  [read more]
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Speedometer Cable
Item #: 7100
Speedometer Cable
  [read more]