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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

NP435 Transmission Master Rebuild 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.

NP435 Transmission Master Rebuild Kit
435MR-F;435MR-D;435MR-E

*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 top cover height

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


Billet PTO Cover

Kit PTO-K, PTO cover, six bolt style, billet

This is the rigid PTO cover that every Novak-built transmission gets, and we recommend them to our customers. They seal better and stay that way for far longer than the stamped steel versions from the factory. Stainless button-head fasteners are included.

K-PTO
Shifter Retention Kit, SM420, SM465, T176, NP435

Kit, shifter retention, SM420, SM465, NP435, T176 transmissions

This shifter retention kit and mini-boot will lock in your shifter stick and give it a better barrier than factory from dust and water ingress.

SLR-176K
NP435 Gaskets Kit

Gaskets set, NP435 Transmission

Sometimes, all you need is a reseal of your NP435. Includes gaskets for the top cover, PTO, 2wd and 4wd tailhousing, front retainer, and countershaft.

WT291-55
NP435 top shifter cover rebuild kit

Kit, rebuild, shift control housing, NP435 transmission

This is the top cover rebuild kit, including the pins, balls, detent pills, springs, pins, clips and plugs needed to put your shifter back into factory condition. #SP291-50Y

SP291-50Y
NP435 Shifter Stick

Stick, shifter cane, NP435 transmission, 3.00” finger length for 5-5/8” tall top covers, 18in cane

This is a shorter shaft version of an NP435 shifter with 3 inch fingers, more appropriate for Jeeps than full size trucks. Comes straight so you can put your own bends into it to fit your needs.

435SS-18-300
NP435 Shifter Stick

Stick, shifter cane, NP435 transmission, 3.00” finger length for 5-5/8” tall top covers, 24in. Cane

This is a longer shaft version of an NP435 shifter with 3 inch fingers, more appropriate for full-size trucks than Jeeps. Comes straight so you can put your own bends into it to fit your needs.

435SS-24-300
NP435 Shifter Stick

Stick, shifter cane, NP435 transmissions, 3.75” finger length, 18” cane

This is a shorter version of an NP435 shifter, more appropriate for Jeeps than full size trucks. Comes straight so you can put your own bends into it to fit your needs.

435SS-18-3750
NP435 Shifter Stick

Stick, shifter cane, NP435 transmissions, 3.75” finger length, 24” cane

This is a longer version of an NP435 shifter, more appropriate for full-size trucks than Jeeps. Comes straight so you can put your own bends into it to fit your needs.

435SS-24-3750

NP435 Exploded Diagram

np435_transmission_parts_exploded_view

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 "‡"" 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

np435_transmission_shifter_top_cover_diagram

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 "‡"" are not available singly, but are included in the top cover small parts kit, #A below.

A. Kit, top cover rebuild (SP291-50Y) B. Kit, shifter retention (SLR-176K) 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 *‡ 9. Plugs, expansion, shift rail bores *‡ 11. Bolt, shouldered, precision alignment 12. Gasket, top cover (WT291-55) 10. Switch, reverse lights (4S-18T) 13. Fork, shifter, reverse 14. Pin, roll, shifter interlock *‡ 15. Plunger, shifter interlock, reverse lug 16. Spring, shifter interlock, reverse lug *‡ 17. Gate, gearshift reverse, front 18. Clip, C-style, reverse shift lug plunger *‡ 19. Pin, roll, shifter interlock *‡ 20. Interlock, shift rail *‡ 21. Spring, shifter poppet *‡ 22. Ball, shifter poppet *‡ 23. Rail, shifter, reverse 24. Rail, shifter, 3rd-4th 25. Interlock, shift rail *‡ 26. Spring, shifter poppet *‡ 27. Ball, shifter poppet *‡ 28. Pin, roll, shifter interlock *‡ 29. Fork, shifter, 3rd-4th (WT291-23A) 30. Insert, shoe, shifter, 3rd-4th (993549) 31. Pin, roll, shifter interlock *‡ 32. Fork, shifter, 1st-2nd 33. Insert, shoe, shifter, 1st-2nd (996969) 34. Gate, shift rail, 1st-2nd 35. Pin, roll, shift rail interlock *‡ 36. Spring, shifter poppet *‡ 37. Ball, shifter poppet *‡ 38. Rail, shifter, 1st-2nd 39. Interlock, shift rail *‡