Parts for the

Dana Model 18 Transfer Case

The Jeep & IH Dana Spicer 18 is still one of the most respected transfer cases on the trail. Professional level repair, assembly and upgrade work is possible for the conscientious shade tree builder.

In addition to our master rebuild kits, we offer nearly all parts at the component level, as well as several upgrade part options.

These kits fit all Jeep Dana 18 Transfer cases and most IH Dana 18 transfer cases.

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


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

There are three master rebuild kits available; one for each of the three major generations of the Model 18.

  • Kit 18MR-1, master rebuild, Dana Spicer Model 18 transfer case, 3/4" intermediate shaft version

  • Kit 18MR-2, master rebuild, Dana 18 transfer case with 1-1/8” intermediate shaft version

  • Kit 18MR-3, master rebuild, Dana Spicer Model 18 transfer case, 1-1/4” intermediate shaft version

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.

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.

  • Kit TCM, intermediate shaft, ¾", Model 18 transfer case

  • Kit TCE, intermediate shaft, 1-1/8”, Model 18 transfer case

  • Kit TCL, intermediate shaft, Dana 1-1/4” transfer cases

Dana 18 Billet Bottom Cover Pan

This extended capacity, anodized billet aluminum bottom pan solves a few Dana transfer case dilemmas:

  • Thick, machined mating flange replaces the dimpled, warped sheet metal original
  • Drip free sealing surface with the use of RTV or RTV + gasket
  • Increased fluid capacity by 16 oz
  • Adds rigidity to the structure of the transfer case
  • Superior heat shedding

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


Kit D328-D, billet aluminum bottom cover pan, Dana transfer cases, deep version

Dana 18 PTO Port Cover

Dana 18 Billet PTO Cover

Utility meets eye-candy. But, go ahead and get it muddy if you'd like.

After seeing the difficulty of finding Dana 18 PTO covers, we added this one to our line-up. It's made from 3/16" thick aluminum (great for heat dissipation), media tumbled and anodized black. We follow up with a little engraving. Because of its rigidity, it will seal better than factory PTO cover.

Cover, PTO port, Dana 18 transfer case, aluminum, black anodized

Dana 18 Gaskets & Seals Set

Dana 18 gasket and seal kit

There's not a better gaskets and seals kit available. The pan gasket itself (otherwise the most prone to leaking) is cut from a rubber-cork compound.

Kit GS18, gaskets, seals, and shim pack for the Model 18 & 20 transfer cases

Dana 18 Billet Tailhousing

Dana 18 output housing

Not only are factory Dana 18 tailhousings in short supply, but they're not all that great when they are available. After building more than a thousand Dana 18's, we've reimagined this crucial part of them with a 9-way o-ring sealing design and internal shimming scheme that does away with the external, leak-prone shim packs. They are then finished in gunmetal gray anodizing. We improved everything and these are now the tailhousing of choice for every Dana 18 we build in-house.

Dana 18 billet tailhousing

Kit, tailhousing, Dana 18 billet rear bearing cap assembly

Other Components

Many parts are available for the Dana 18, including gears, shafts, etc.


1. Companion Flange, #116714
2. Emergency Brake Drum, #A932
3. Emergency Brake Shoesm, #643055
4. Brake Operating Lever, #A22-2B
5. Bearing Cap Oil Seal*, #923896
6. Brake Operating Lever Stud, #1309-146-001
7. Rear Bearing Cap, #C18-19-31
8. Rear Bearing Cap Shim Set*, #A6753-N
9. Bolt
10. Lockwasher
11. Bolt
12. Transfer Case Rear Cover, #F-PTO18
13. Gasket, rear cover*, #T9-150
14. Intermediate Shaft Lock Plate, #JA001001
15. Transfer Case, #5083
16. Shift Rod
17. Poppet Plug, #942385
18. Poppet Spring*, #A966
19. Poppet Ball*, #38G25
20. Shift Rod Interlock
21. Gasket, bearing cap*, #10149
22. Cap, front bearing
23. Breather
24. Seal, oil, shift rail*, #471466V
25. End Yoke, #A1106
26. Gasket, oil seal*, #923896
27. Bolt
28. Lockwasher
29. Shift Rod
30. Front Wheel Drive Shift Fork, #A960
31. Underdrive and Direct Shift Fork, #A959
32. Filler Plug,
33. Gear, input shaft

34. Washer, input gear, #A1410
35. Washer, thrust *A1000
36. Gear, intermediate
37. Ring, retaining / snap, front output bearing*, #1300-315
38. Bearing, front output shaft*, #51575
39. Nut, companion flange, #801367
40. Washer, plain
41. Output Clutch Shaft, #807892
42. Output Clutch Shaft Gear, #809291
43. Ring, snap / retaining, front output shaft*, #A991
44. Washer, thrust*,
45. Output Shaft Gear, #809291
46. Gear, output shaft, sliding
47. Bushing, output shaft pilot*, #A987
48. Shaft, output, #807767
49. Bearing, tapered roller, rear output*, #51575
50. Cup, tapered roller, rear output*,
51. Gear, speedometer drive
52. Bearings, needle roller*, #642190
53. Spacer, bearing *
54. Shaft, intermediate idler*, #642188
55. Plug, drain
56. Gasket, bottom cover *
57. Nut, input shaft, #940970
58. Cover, bottom (pan)
59. Speedometer Driven Gear Sleeve
60. Speedometer Driven Gear (15-t)
61. Speedometer Driven Gear Bushing
62. Gasket, rear output *
63. Bolt
64. Bolt
65. Bolt
66. Bolt
67. Lockwasher
68. Nut
69. Seal, oil, felt *

Full Master Rebuilt Transfer Case

Our Dana 18 is professionally and meticulously rebuilt. We use the best components, including bearings, bushings, seals and gaskets built by our Dana 18 specialists and experts. All known updates and improvements are performed. Put the experience of thousands of Dana transfer case rebuilds to work for your Jeep.

Because of the variations involved and shipping options available, we encourage you to contact us directly by phone or e-mail. We will help you put together the transfer case which best fits your requirements.

Note that we can supply a core Dana 18 or we can arrange to have yours sent in with a core credit of $400. Transfer cases are built to order and typically take 1-3 weeks to ship. Contact us for current build times. Costs range from $1,667. to $1,795. depending on your configuration, ranging from standard versions without emergency brake to "Super 18" (Dana 18 with a Dana 20 case) with emergency brake, etc.

Dana Model 18 Transfer Case


your transfer case package is palleted and wrapped (if trucking is required) or packaged in a double-wall box (if by parcel), 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 (if trucking), as residential and liftgate fees can add up to an extra $100. per delivery.

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