Parts for the
New Process 435 Transmission
The NP435 has proven to be one of the best transmissions ever built. Their unique design influenced a generation of transmissions to follow.
The Master Kit
Our NP435 rebuild kit is like no other on the market. They are informed and curated by the hundreds of builds we have done on these in our own shop. Included are all the gaskets, synchros, bearings, spacers, shims, shoes, pins, retaining rings, seals and selective shims needed to do a proper rebuild. Additionally, our included instructions are second to none.
Top shifter cover rebuild kits and shift tower rebuild kits are included.
*Dodge 435 input bearings changed back and forth through their production years. The earlier ones (starting in 1962-) generally used a deep ball roller bearing input. They switched to a tapered input bearing and cup around 1969, which version persisted until the 1980's. In about 1986, the ball roller bearing style returned.
Rebuild Requirements
It is 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.
A terrific online guide to help one size up an NP435 rebuild has been written by Four Wheeler's Verne Simmons. See it here.
Shifter Cane Selection
NP435's have two available finger lengths, one for the shorter, long throw top cover, and one for taller, short throw top cover. Choose you finger length accordingly when selecting a new stick in Related Products, below.
Related Products
NP435 Exploded Diagram
For your reference, all asterixed * items below are included in our master rebuild kit, above.
Items indicated with a double asterix ** below are not available singly, but are included in our master rebuild kit, above.
Items indicated with a triple asterix *** below are not available singly, but are included in assembly #25 below.
Items indicated with a "â¡" are not available singly, but are included in the Small Parts Kit, #A below.
A. Kit, small parts * 1. Bolt, front input retainer 2. Retainer, bearing, front input (WT291-6) 2. Retainer, bearing, front input (WT291-6A) 2. Retainer, bearing, front input (4340264) 2. Retainer, bearing, front input (96012) 2. Retainer, bearing, front input (96373) 2. Retainer, bearing, front input (WT291-6AA) 3. Gasket, front input bearing retainer (WT291-55) 3. Gasket, front input bearing retainer (4626-5) 3. Gasket, front input bearing retainer (4626-10) 3. Gasket, front input bearing retainer (4626-15) 3. Gasket, front input bearing retainer (4626-20) 4. Seal, oil, input shaft (13557) 4. Seal, oil, input shaft (12363) 4a. Ring, snap, retaining, front input shaft *‡ (Uncommon & early ball bearing version only) 4b. Bearing, ball roller style (rare: GM & early Dodge / Ford only) (643721) 4c. Slinger, oil, input shaft bearing 5,6. Bearing, Cup, tapered roller, front input (88649) 7. Shaft, input (or main drive gear) (WT291-16J) 8. Bearings, needle roller, mainshaft pilot (14) * 9. Washer, retaining *‡ 10. Ring, snap, retaining *‡ 11. Bearing, drawn cup, needle roller, closed end, cluster, front (C4TZ-7118-A) 12. Plug, drain / fill (PP627-100) 13. Bolt & lockwasher 14. Cover, PTO port 14. Cover, PTO port (T53-160B) 14. Cover, PTO port (T53-160A) 15. Gasket, PTO port cover (T9150) 16. Washer, thrust, cluster shaft *‡ 17. Gear, cluster, countershaft (WT291-3C) 17. Gear, cluster, countershaft (WT291-3D) 18. Bearing race, thrust, cluster gear ** 19. Bearing, thrust, needle rollers, cluster shaft, rear (2507996) 20. Gasket, rear, countershaft retainer * 21. Bearing, needle roller, caged, countershaft rear (B3216) 22. Retainer, countershaft rear bearing - New, billet version (C95734-N) 23. Bolt & lockwasher 25. Assembly, synchronizer, 3rd - 4th, includes aluminum rings & slider, one-piece bonded style, updated (AWT275-2_5B) 24. Plate, synchronizer, 3rd-4th, outer steel (Only Used Synchronizers Available) (WT258-14) 34. Ring, snap, retaining, 2nd gear synchro ring (WT291-21) 35. Gear, 2nd (WT291-2B) 37. Ring, synchronizer, 1st - 2nd, aluminum w/pins (AWT291-83) 38. Shaft, main - Novak carries various good used versions. Contact us with your application. 39. Gear, 1st & reverse, slider, 37 tooth (WT291-12) 40. Spacer, mainshaft bearing (96187) 41. Bearing, mainshaft, rear (6308N) 42. Gear, speedometer drive (2wd models) varies 43. Gasket, rear, tailhousing / adapter (5362) 44. Tailhousing (2wd) or Adapter (4wd), rear output - Novak carries various good used versions. Contact us with your application. 45. Bolt & lockwasher 46. Seal, oil, rear output (6879H) 46. Seal, oil, rear output (21098) 47. Nut, mainshaft yoke, 1" x 20, 1-1/2" socket (some models) 48. Ring, snap, retaining *‡ 49. Washer, needle bearing retaining * 50. Bearings, needle roller, reverse idler gear (68) *(some models only) 51. Washer, needle bearings separator * (some models only) 52. Race, inner, needle bearing 53. Gear, reverse idler (AWT291-10C) 54. Shaft, idler, reverse (WT258-35A) 55. Cover, PTO port (T53-160B) 55. Cover, PTO port (T53-160A) 56. Gasket, PTO port cover *Transmission Shifter Control Housing Top Cover Kits & Components
For your reference, all asterixed * items below and shaded in red on the above diagram are included in our top cover small parts kit #SP291-50Y. Diagramed items shaded in green are in our #SLR-176K shift retention kit.
Items indicated with a "â¡" are not available singly, but are included in the top cover small parts kit, #A below.
A. Kit, top cover rebuild (see #SP291-50Y, Related Products, above)B. Kit, shifter retention (see #SLR-176K, Related Products, above)
1. Knob, shifter, #K103
2. Nut, jam, 3/8-24
3. Boot, mini, shifter tower housing
4. Cap, retaining, transmission shifter stick
5. Washer, domed, shifter stick seat
6. Spring, shifter stick seat
7. Stick, shifter cane (see, adjacent)
8. Pins, shifter stick alignment *â¡
9. Plugs, expansion, shift rail bores *â¡
11. Bolt, shouldered, precision alignment
12. Gasket, top cover (available with gasket kit only), WT291-55
10. Switch, reverse lights, 4S-18T
13. Fork, shifter, reverse
14. Pin, roll, shifter interlock *â¡
15. Plunger, shifter interlock, reverse lug
16. Spring, shifter interlock, reverse lug *â¡
17. Gate, gearshift reverse, front
18. Clip, C-style, reverse shift lug plunger *â¡
19. Pin, roll, shifter interlock *â¡
20. Interlock, shift rail *â¡
21. Spring, shifter poppet *â¡
22. Ball, shifter poppet *â¡
23. Rail, shifter, reverse
24. Rail, shifter, 3rd-4th
25. Interlock, shift rail *â¡
26. Spring, shifter poppet *â¡
27. Ball, shifter poppet *â¡
28. Pin, roll, shifter interlock *â¡
29. Fork, shifter, 3rd-4th, #WT291-23A
30. Insert, shoe, shifter, 3rd-4th * #993549
31. Pin, roll, shifter interlock *â¡
32. Fork, shifter, 1st-2nd
33. Insert, shoe, shifter, 1st-2nd * #996969
34. Gate, shift rail, 1st-2nd
35. Pin, roll, shift rail interlock *â¡
36. Spring, shifter poppet *â¡
37. Ball, shifter poppet *â¡
38. Rail, shifter, 1st-2nd
39. Interlock, shift rail *â¡