Full Master Rebuilt Transfer Case


Our Dana 20 is professionally and meticulously rebuilt. We use the best components, including bearings, bushings, seals and gaskets built by our Dana 20 specialist and expert. Any available updates and improvements are performed.


Because of the many variations involved and shipping cost variations, we encourage you to contact us directly by phone or e-mail. We will help you put together your transfer case to best fit your requirements. If purchasing online, choose the "Contact me with a shipping quote cost" shipping option.


Transfer cases are built to order and take 1-6 weeks to ship. Contact us for current build times.




Your transfer case package is palleted, wrapped, fully insured and ready to bolt into your application. Novak will seek the best competitive shipping rates with our extensive trucking networks. It will arrive at a location of your choosing, though we strongly recommend a business location with a dock / forklift for delivery, as residential and liftgate fees can add up to an extra $100. per delivery.

All transmissions and transfer cases are built to order. Average lead times vary from days to weeks depending on the time of year. Please call our salesmen at 877-602-1500 for current lead times.

Parts for the

Dana Model 20 Transfer Case

The Jeep & IH Dana Spicer 20 is one of the most respected transfer cases on the trail and street. Professional level rebuild work is possible for the conscientious shade tree rebuilder. 

We offer nearly all parts at the component level, and our master rebuild kit, which includes the most thorough collection of parts offered anywhere.



The Master Kit 

Our master rebuild kit has been assembled for our customer's rebuilds as well as our own. It is the most complete kit we've seen anywhere and features all the consumable and wear item components.

Our exclusive intermediate shafts are made at Novak from a triple-alloy gear steel and case-hardened to exceptional hardness and are the strongest and hardest shafts available. They also feature o-ring grooves at both ends, assuring a better seal than factory; extra o-rings are also included.


All kits include all the bearings, seals, gaskets, shims, small parts, intermediate shaft and comprehensive rebuild guide.

Applications & Compatibility

This kit fits all Jeep Dana 20 Transfer cases and most IH Dana 20 transfer cases. NOT compatible with the Ford Bronco or other Dana 20 transfer cases.

Related Products

The Intermediate Shaft Kits

These kits are a reduced version of our Master Kits. They contain the specially hardened intermediate shaft, O-rings, thrust washers, bearings and snap ring.


Dana 20 Billet Bottom Cover Pan

This extended capacity, billet bottom pan is the answer to a few Dana transfer case dilemmas. Its rigid construction replaces the thin, warped factory pans virtually assuring a drip-free seal and adds rigidity to the transfer case. Extended depth increases fluid capacity of the Dana transfer case by about 16 oz. extending the life of components within. The pan is made of corrosion resistant 6061 aluminum and then anodized clear for further protection.

Included are the stainless socket head button cap screws, drain plug and sealing washer. Read the review at 4x4review.com

Compatible with Jeep, IH, and Chevy Dana 20 transfer cases. Will not fit a Bronco Dana 20. 


Dana 20 Front Output Rear Bearing Cap


The Novak Dana 20 front output rear bearing caps were designed as an upgrade to eliminate any gear oil leaking from this location. The factory bearing/shim cover is one of the few notorious locations a leak can be found on the Dana 20 case. This is due to the shims being placed between the case & the cap, with only a copper spray-gasket applied to the shims to seal the cover. The Novak shim/bearing cover utilizes a three tier O-ring setup to seal the case from leaking; two O-rings per bolt, one inside & one outside the cover, as well as one larger O-ring following the hole path inside the cap. This triple O-ring design is sure to eliminate your likely present oil leak at the bearing/shim cover. Installation of these kits is quite simple, especially with the help of the included detailed instructions.

Dana 20 Gaskets & Seals Set

There's not a better gaskets and seals kit available. This one makes it possible to have a Dana 20 and a drip-free garage floor. The pan gasket itself (usually the most problematic) is cut from a rubber-cork compound.


Other Components

Essentially all parts for the Dana 20, including gears, shafts, etc. are available new and affordably so. Our parts ordering module is provided below.

1. Shift Rod - Rear Output Shaft Shift Fork
2. Shift Rod - Front Output Shaft Shift Fork
3. Shift Rod Oil Seal
4. Interlock Plug
5. Interlock
6. Poppet Ball Spring *
7. Poppet Ball *
8. Front Bearing Cap
9. Front Bearing Cap Gasket *
10. Front Output Shaft Thrust Washer *
11. Front Output Shaft Gear
12. Front Output Shaft Sliding Gear
13. Setscrew
14. Front Output Shaft Shift Fork
15. Front Output Shaft
16. Front Output Shaft Spacer *
17. Front Output Shaft Front Bearing Cup *
18. Front Output Shaft Front Bearing *
19. Filler Plug
20. Transfer Case
21. Thimble Cover
22. Front Output Shaft Rear Bearing *
23. Front Output Shaft Rear Bearing Cup *
24. Front Output Shaft Rear Bearing Cup Shims *
25. Cover Plate
26. Intermediate Shaft *
27. Intermediate Shaft 0-ring *
28. Lock Plate
29. Lock Plate Bolt
30. Rear Output Shaft Front Bearing *
31. Rear Output Shaft Front Bearing Cup *
32. Speedometer Drive Gear
33. Rear Output Shaft Bearing Shim *
34. Rear Bearing Cap Gasket *
35. Rear Bearing Cap
36. Breather
37. Rear Output Shaft Rear Bearing Cup *
38. Rear Output Shaft Rear Bearing *
39. Rear Bearing Cap Oil Seal *
40. Rear Yoke
41. Rear Yoke Washer
42. Rear Yoke Nut
43. Speedometer Sleeve
44. Speedometer Driven Gear
45. Speedometer Bushing
46. Bottom Cover Gasket *
47. Bottom Cover
48. Drain Plug
49. Rear Output Shaft
50. Rear Output Shaft Sliding Gear
51. Main Shaft Gear
52. Setscrew
53. Rear Output Shaft Shift Fork
54. Intermediate Gear Thrust Washer *
55. Intermediate Gear Bearing Spacer *
56. Intermediate Gear Shaft Needle Bearings *
57. Intermediate Gear Bearing Spacer *
58. Intermediate Gear
59. Intermediate Gear Shaft Needle Bearings *
60. Intermediate Gear Bearing Spacer *
61. Intermediate Gear Thrust Washer *
62. Front Bearing Cap *

Installation Requirements

It is very common for our customers to do top-level rebuild work, using good methods and by following our included instruction guide. We suggest the rebuilder have access to a set of snap ring pliers, and a small arbor press, in addition to standard shop tools. The full rebuild procedure is covered here.

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