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Parts for the
New Process 435 Transmission

NP435 Parts

The NP435 has proven to be one of the best transmissions ever built. Their unique design influenced a generation of transmissions to follow.

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 know of. It features all the typical consumable and wear item components, and includes items that are not usually supplied by others, such as the selective front shims, top cover rebuild kit, updated 3rd-4th synchro ring assembly, fork inserts, etc.

Rebuild 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.

Other Components
Essentially all parts for the NP435, including gears, shafts, etc. are available new and affordably so. Contact us.

 

435 Master Rebuild Kit



Kit, master rebuild, NP435 transmission, Ford version
Part #: 435MR-F
Weight: 9.15
Price: $248.00
Buy:
Includes: bearings, small parts, snap rings, syncrho rings (including full updated, one-piece bonded 3rd-4th syncrho selector), gaskets, seals, selective gaskets, shims, fork inserts, top cover rebuild kit and rebuild instructions

Kit, master rebuild, NP435 transmission, Dodge version
Part #: 435MR-D
Weight: 9.10
Price: $294.00
Buy:
Includes: bearings, small parts, snap rings, syncrho rings (including full updated, one-piece bonded 3rd-4th syncrho selector), gaskets, seals, selective gaskets, shims, fork inserts, top cover rebuild kit and rebuild instructions

Kit, master rebuild, NP435 transmission, ball bearing input version
Part #: 435MR-E
Weight: 8.98
Price: $288.00
Buy:
For early Dodge and all GM NP435 versions with the ball bearing style input. Includes: bearings, small parts, snap rings, syncrho rings (including full updated, one-piece bonded 3rd-4th syncrho selector), gaskets, seals, selective gaskets, shims, fork inserts, top cover rebuild kit and rebuild instructions

NP435 Transmission Exploded Diagram

 

Transmission Parts
Click on any item description in blue below to expand its details for purchase. You can use your browser's Back button to return to this page and your cart items will remain.

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.

Kit, small parts, NP435 transmission
Part #: SP291-50
Weight: 0.47
Price: $28.81
Buy:
1. Bolt, front input retainer
Retainer, front input bearing, NP435 transmission, for 9.00" input shaft (common)
Part #: WT291-6
Weight: 2.56
Price: $33.41
Buy:

Retainer, front input bearing, Dodge NP435 transmission. 19 spline, tapered bearing version. 1968-1987
Part #: WT291-6A
Weight: 3.05
Price: $32.74
Buy:

Retainer, front input bearing, Dodge NP435 transmission. 1988-
Part #: 4340264
Weight: 2.50
Price: $118.14
Buy:

Retainer, front input bearing, Dodge NP435 transmission. Ball bearing version, 1963-1968
Part #: 96012
Weight: 0.00
Price: $0.00
Buy:

Retainer, front input bearing, Ford NP435 transmission. For 10.06" HD input (uncommon)
Part #: 96373
Weight: 0.00
Price: $0.00
Buy:

Retainer, front input bearing, Ford NP435 transmission. For 9.31" HD input (uncommon)
Part #: WT291-6AA
Weight: 0.00
Price: $0.00
Buy:
Gaskets set, NP435 Transmission
Part #: WT291-55
Weight: 0.50
Price: $9.57
Buy:

Gasket, selective shimming, NP435 front bearing retainer, .005 in.
Part #: 4626-5
Weight: 0.01
Price: $1.60
Buy:

Gasket, selective shimming, NP435 front bearing retainer, .010 in.
Part #: 4626-10
Weight: 0.01
Price: $1.60
Buy:

Gasket, selective shimming, NP435 front bearing retainer, .015 in.
Part #: 4626-15
Weight: 0.01
Price: $1.60
Buy:

Gasket, selective shimming, NP435 front bearing retainer, .020 in.
Part #: 4626-20
Weight: 0.10
Price: $1.66
Buy:
Seal, oil, input, NP435 transmission, Ford/Dodge with tapered input bearing
Part #: 13557
Weight: 0.03
Price: $12.02
Buy:

Seal, oil, front input, IH T19, IH T90 and IH NP435 transmissions
Part #: 12363
Weight: 0.03
Price: $9.01
Buy:
Uncommon & early ball bearing version only
Bearing, deep groove ball, single row, with external retaining ring groove, T90 & early NP435 transmission, front
Part #: 643721
Weight: 0.80
Price: $14.95
Buy:
4c. Slinger, oil, input shaft bearing
Cup, tapered bearing, input, NP435 transmission
Part #: 88610
Weight: 0.28
Price: $8.32
Buy:
Bearing, tapered roller, Dana 300 front output, 2 required & NP435 input shaft
Part #: 3156063
Weight: 0.49
Price: $17.63
Buy:
*NOTE: This part is no longer available new. Please call for good used condition availability.* Shaft, input, NP435 Ford, 17 tooth, 10 spline, 1-1/16". 9.00"
Part #: WT291-16J
Weight: 3.37
Price: $91.69
Buy:
8. Bearings, needle roller, mainshaft pilot (14) *
9. Washer, retaining *
10. Ring, snap, retaining*
Bearing, drawn cup, needle roller, closed end, NP435 cluster, front
Part #: C4TZ-7118-A
Weight: 0.00
Price: $17.03
Buy:
Plug, pipe, 1/2", square head, transmission drain
Part #: PP627-100
Weight: 0.10
Price: $2.24
Buy:
13. Bolt & lockwasher
Cover, PTO port, six bolt
Part #: T53-160B
Weight: 0.30
Price: $6.43
Buy:

Cover, PTO port, six bolt, billet aluminum
Part #: T53-160A
Weight: 0.77
Price: $28.20
Buy:
Also available in kit form with stainless fastening hardware
Gasket, PTO cover, six bolt
Part #: T9150
Weight: 0.05
Price: $1.49
Buy:
Washer, thrust, cluster shaft, NP435 transmission
Part #: 95713
Weight: 0.01
Price: $4.92
Buy:
Gear, cluster, NP435, R43-35-25-S14T, , 1.66:1 3rd gear
Part #: WT291-3
Weight: 25.00
Price: $231.66
Buy:

Gear, cluster, NP435, R38-33-25-S14T, Dodge 4.56:1 first gear
Part #: WT291-3C
Weight: 25.00
Price: $0.00
Buy:

Gear, cluster, NP435, R43-34-25-S14T, 1.74:1 3rd gear
Part #: WT291-3D
Weight: 25.00
Price: $198.00
Buy:
18. Bearing race, thrust, cluster gear **
Bearing, thrust, needle rollers, cluster shaft, rear, NP435 transmission
Part #: 2507996
Weight: 0.10
Price: $11.00
Buy:
20. Gasket, rear, countershaft retainer *
Bearing, needle roller, NP435 cluster, rear
Part #: B3216
Weight: 0.00
Price: $18.88
Buy:
(Not currently available)
23. Bolt & lockwasher
Plate, synchronizer, 3rd - 4th, outer, steel, NP435 transmission, 2 required
Part #: WT258-14
Weight: 1.00
Price: $20.80
Buy:
Assembly, synchronizer, 3rd - 4th, NP435 transmission, includes aluminum rings & slider, one-piece bonded style, updated
Part #: AWT275-2.5B
Weight: 2.32
Price: $52.47
Buy:
Ring, synchronizer, 3rd - 4th, NP435 transmission, aluminum. Earlier, separate design
Part #: WT275-14
Weight: 0.34
Price: $23.71
Buy:
Slider, synchronizer clutch, 3rd - 4th, NP435 transmission, earlier, separate design
Part #: WT275-15
Weight: 0.00
Price: $20.63
Buy:
28. Ring, snap, retaining, 3rd-4th syncrho hub (early ball bearing input design only) *
29. Bearing, thrust, needle rollers, 3rd-4th synchro hub face (later, front tapered bearing version only) **
30. Hub, synchronizer, 3rd - 4th gear
Shims, syncrhonizer assembly, 3rd - 4th gear, NP435 transmission
Part #: 69241B
Weight: 0.01
Price: $0.97
Buy:
Gear, 3rd, NP435 transmission, L23T, 1.66:1
Part #: WT291-11
Weight: 2.20
Price: $46.38
Buy:

Gear, 3rd, NP435 transmission, L25T, 1.31:1
Part #: WT291-11B* Item in Production
Weight: 2.19
Price: $0.00
Buy:

* We're currently working on restocking this part. Please call us at 435-753-2513 for product lead time.

Gear, 3rd, NP435 transmission, L24T, 1.74:1
Part #: WT291-11C
Weight: 2.19
Price: $47.84
Buy:
33. Ring, snap, retaining, split, 2nd gear *
34. Ring, snap, retaining, 2nd gear synchro ring *
Gear, 2nd, NP435 transmission, L32T. Dodge
Part #: WT291-2B
Weight: 0.00
Price: $174.64
Buy:

Gear, 2nd, NP435 transmission. L33T. Ford & Dodge
Part #: WT291-21
Weight: 3.50
Price: $46.19
Buy:
36. Spring, flat, coil, 1st-2nd gear syncrhonizer
Ring, synchronizer, 1st - 2nd, NP435 transmission, aluminum w/pins
Part #: AWT291-83
Weight: 0.73
Price: $35.73
Buy:
- Novak carries various good used versions. Contact us with your application.
Gear, 1st & reverse, slider, NP435 transmission, 37 tooth
Part #: WT291-12
Weight: 5.80
Price: $69.99
Buy:
Spacer, mainshaft bearing, NP435
Part #: 96187
Weight: 0.07
Price: $16.80
Buy:
Bearing, deep groove ball, single row, with external retaining ring groove, 6308N
Part #: 6308N
Weight: 1.42
Price: $20.41
Buy:
42. Gear, speedometer drive (2wd models) varies
Part #: B9TZ-7086-A
Weight: 0.00
Price: $0.00
Buy:

Gasket, output housing, NP435 transmission, 2wd, Ford, later rectangular style
Part #: 5362
Weight: 0.02
Price: $2.15
Buy:

Gasket, output housing, NP435 transmission, 4wd, Ford & Dodge, trapezoidal style
Part #: 6355
Weight: 0.02
Price: $1.75
Buy:
- Novak carries various good used versions. Contact us with your application.
45. Bolt & lockwasher
Seal, oil, rear output, Novak 124 & 152 adapters, and Dodge 35 spline 2wd NP435
Part #: 6879H
Weight: 0.09
Price: $29.48
Buy:

Seal, rear output, NP435, IH 2wd version
Part #: 21098
Weight: 0.00
Price: $12.13
Buy:
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
Gear, reverse idler, NP435 transmission. S17T-S21T. Bushing style
Part #: AWT291-10C
Weight: 3.40
Price: $69.95
Buy:
Shaft, idler, reverse, NP435 transmission *NOTE: This part is no longer available new. Please call for good used condition availability.*
Part #: WT258-35A
Weight: 0.00
Price: $31.72
Buy:
55. Plate, lock, reverse idler 56. Bolt & lockwasher

Key items of interest:

Billet aluminum PTO cover for transmissions
Kit PTO-K, PTO cover, six bolt style, billet
Part #: K-PTO
Weight: 1.01
Price: $41.00
Buy:

 

Gaskets for the NP435
Gaskets set, NP435 Transmission
Part #: WT291-55
Weight: 0.50
Price: $9.57
Buy:

 

 

 

 

NP435 transmission shifter assembly parts diagram

Transmission Shifter Control Housing Top Cover Kits & Components
Click on any item description in blue below to expand its details for purchase. You can use your browser's Back button to return to this page and your cart items will remain.

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 (see #SP291-50Y, adjacent)
B. Kit, shifter retention (see #SLR-176K, adjacent)
Knob, transmission shifter, typ. 4 speed, blank
Part #: K103
Weight: 0.30
Price: $8.32
Buy:
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 *
Switch, reverse, four-speed transmissions, spade style plugs
Part #: 4S-18
Weight: 0.13
Price: $19.44
Buy:
Uses spade style plugs to work with more universally in a variety of applications. Building a custom pigtail may be required.
11. Bolt, shouldered, precision alignment
Gaskets set, NP435 Transmission
Part #: WT291-55
Weight: 0.50
Price: $9.57
Buy:
Fork, shifter, reverse, NP435 transmission
Part #: WT291-23B
Weight: 2.50
Price: $48.71
Buy:
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 *
Fork, shifter, 3rd - 4th, NP435 transmission
Part #: WT291-23A
Weight: 2.50
Price: $45.68
Buy:
Insert, shoe, shifter fork, 3rd - 4th, NP435 transmission
Part #: 993549
Weight: 0.01
Price: $0.60
Buy:
31. Pin, roll, shifter interlock *
Fork, shifter, 1st - 2nd, NP435 transmission
Part #: WT291-23
Weight: 2.50
Price: $42.74
Buy:
Insert, shoe, shifter fork, 1st - 2nd, NP435 transmission
Part #: 996969
Weight: 0.01
Price: $0.60
Buy:
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 *

 

Key Items of Interest:

Measuring the NP435 Shifter Top Cover Height
Stick, shifter cane, NP435 transmission, 3.00" finger length for 5-5/8" tall top covers
Part #: 11307
Weight: 3.40
Price: $72.54
Buy:

Stick, shifter cane, NP435 transmissions, 3.75" finger length for 6-3/8" tall top covers
Part #: 11306
Weight: 3.40
Price: $69.30
Buy:

 

Shifter control rebuild kit
Kit, rebuild, shift control housing, NP435 transmission
Part #: SP291-50Y
Weight: 0.21
Price: $32.24
Buy:

 

 

Shifter stick retention and boot kit
Kit, shifter retention, SM420, SM465, NP435, T176
Part #: SLR-176K
Weight: 0.32
Price: $17.20
Buy:
Includes retention spring, domed washer, retainer and rubber boot