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    Parts for the
    New Process 435 Transmission

    Shop individual NP435 parts on the exploded diagramClick any number on the diagram to find that part · 33 parts available online

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

    kit 435mr

    435MR-F;435MR-D;435MR-E

    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.



    Quality you can count on.

    Our master rebuild kits have been assembled for our customer's rebuilds as well as the thousands of rebuilds we do at Novak. It is the most complete kit we've seen anywhere and features all the consumable and wear item components. Cut-rate "BK" basic kits seen on the market don't hold a candle to the Novak kits' quality and completeness.

    These rebuild kits set the industry standard for reliability, using only premium bearings and seals from proven manufacturers like Timken, JTEKT, Nachi, CR Seals, and more. No single brand makes every part we require, so we hand-select each component to ensure unrivaled performance and longevity.

    Novak kits include:

    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

    Billet PTO Cover, 6-Bolt

    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

    SM420/SM465/NP435/T176 Shifter tower retention rebuild Kit

    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
    New Process 435 Gaskets Kit

    NP435 Transmission Gasket Set

    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

    NP435 Lid Rebuild Kit

    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
    435 Shifter

    NP435 Shifter Cane, 18" Cane, 3.00" Finger

    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-18-300
    NP435 Shifter Stick

    NP435 Shifter Cane, 24" Cane, 3.00" Finger

    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-24-300
    435 Shifter

    NP435 Shifter Cane, 18" Cane, 3.75" Finger

    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

    NP435 Shifter Cane, 24" Cane, 3.75" Finger

    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 Parts Diagram

    Click a number on the diagram to find that part, or search the list. 33 of the 75 parts listed can be ordered online — for anything else call 877-602-1500.

    Red callouts on the diagram are in the master rebuild kit. Parts 26 and 27 come in the 3rd/4th synchronizer assembly (#25). Parts in the boxes marked * are for the early ball-bearing input only.

    NP435 Transmission exploded diagram
    Pinch or use + to zoom
    Available onlineCall to order / not sold separately
    1. Bolt, front input bearing retainer
      Not sold separately
    2. Front input bearing retainer, 9.00" input shaft
      #WT291-6 NP435 Front Input Bearing Retainer (9.00" Input Shaft)
      $35.95
    3. Front input bearing retainer, Dodge 1968–87 (19-spline)
      #WT291-6A Dodge NP435 Front Input Bearing Retainer (1968-1987, 19 Spline)
      Call to order
    4. Front input bearing retainer, Dodge 1988–
      #4340264 Dodge NP435 Front Input Bearing Retainer (1988-)
      Call to order
    5. Front input bearing retainer, Dodge ball-bearing 1963–68
      #96012 Retainer, front input bearing, Dodge NP435 transmission. Ball bearing version, 1963-1968
      Call to order
    6. Front input bearing retainer, Ford 9.31" HD input
      #WT291-6AA Retainer, front input bearing, Ford NP435 transmission. For 9.31” HD input (uncommon)
      Call to order
    7. Front retainer shim gasket, 0.005"
      #4626-5 NP435 Front Bearing Retainer Shim Gasket, 0.005"
      In master rebuild kit
      $2.21
    8. Front retainer shim gasket, 0.010"
      #4626-10 NP435 Front Bearing Retainer Shim Gasket, 0.010"
      In master rebuild kit
      $2.21
    9. Front retainer shim gasket, 0.015"
      #4626-15 NP435 Front Bearing Retainer Shim Gasket, 0.015"
      In master rebuild kit
      $2.21
    10. Front retainer shim gasket, 0.020"
      #4626-20 NP435 Front Bearing Retainer Shim Gasket, 0.020"
      In master rebuild kit
      $6.32
    11. Input shaft oil seal
      #13557 NP435 Input Oil Seal (Ford/Dodge, Tapered Input Bearing)
      In master rebuild kit
      $12.95
    12. Input shaft snap ring (early ball-bearing input)
      #SP291-50 NP435 Small Parts Kit
      In master rebuild kit
      Sold in the NP435 small parts kit
      $30.95
    13. Input ball bearing (GM & early Dodge/Ford)
      #643721 T90/Early NP435/T150/SM420 35-Spline Output Ball Bearing w/ Retaining Ring Groove
      $29.95
    14. Input bearing oil slinger
      Not sold separately
    15. Input tapered roller bearing set
      #88649/88610 NP435 Input Tapered Roller Bearing Set (88649/88610)
      In master rebuild kit
      $44.95
    16. Input tapered roller bearing race
      #88610 NP435 Input Tapered Roller Bearing Race
      $20.95
    17. Input shaft (main drive gear)
      Several versions — call with your application
      Not sold separately
    18. Mainshaft pilot needle rollers (14)
      In master rebuild kit
      Comes in the master rebuild kit
    19. Retaining washer
      #SP291-50 NP435 Small Parts Kit
      In master rebuild kit
      Sold in the NP435 small parts kit
      $30.95
    20. Snap ring
      #SP291-50 NP435 Small Parts Kit
      In master rebuild kit
      Sold in the NP435 small parts kit
      $30.95
    21. Cluster front needle bearing, closed-end drawn cup
      #C4TZ-7118-A NP435 Cluster Front Closed-End Needle Bearing (Drawn Cup)
      In master rebuild kit
      $29.00
    22. Drain / fill plug, 1/2" square head
      #PP627-100 Transmission Drain Pipe Plug, 1/2" Square Head
      $2.35
    23. Bolt & lock washer
      Not sold separately
    24. PTO port cover — billet
      #K-PTO Billet PTO Cover, 6-Bolt
      Novak upgrade
      $39.95
    25. PTO port cover — stamped steel
      #T53-160B Cover, PTO port, six bolt, stamped steel
      Call to order
    26. PTO port cover gasket
      #WT291-55 NP435 Transmission Gasket Set
      In master rebuild kit
      Sold in the NP435 gasket set
      $23.95
    27. Cluster shaft thrust washer
      #SP291-50 NP435 Small Parts Kit
      In master rebuild kit
      Sold in the NP435 small parts kit
      $30.95
    28. Cluster gear, Dodge 4.56:1 1st
      #WT291-3C Gear, cluster, NP435, R38-33-25-S14T, Dodge 4.56:1 first gear
      R38-33-25-S14T
      Call to order
    29. Cluster gear, 1.74:1 3rd
      #WT291-3D Gear, cluster, NP435, R43-34-25-S14T, 1.74:1 3rd gear
      R43-34-25-S14T
      Call to order
    30. Cluster gear thrust bearing race
      In master rebuild kit
      Not sold separately — in the master rebuild kit
      Comes in the master rebuild kit
    31. Cluster shaft rear thrust needle bearing with washers
      #2507996 NP435 Rear Cluster Shaft Thrust Needle Bearing (Incl. Thrust Washers)
      In master rebuild kit
      $16.95
    32. Countershaft rear retainer gasket
      #WT291-55 NP435 Transmission Gasket Set
      In master rebuild kit
      Sold in the NP435 gasket set
      $23.95
    33. Countershaft rear caged needle bearing
      #B3216 NP435 Cluster Rear Needle Bearing
      In master rebuild kit
      $16.95
    34. Countershaft rear bearing retainer — billet kit
      #C95734-N NP435 Rear Countershaft Bearing Retainer Kit
      Novak upgrade
      $89.00
    35. Bolt & lock washer
      Not sold separately
    36. 3rd/4th synchronizer outer plate, steel
      #WT258-14 NP435 3rd-4th Outer Synchronizer Plate, Steel (Qty 2)
      Used only
      Call to order
    37. Synchronizer assembly, 3rd/4th — one-piece bonded, updated
      #AWT275-2.5B Assembly, synchronizer, 3rd – 4th, NP435 transmission, includes aluminum rings & slider, one-piece b
      In master rebuild kitNovak upgrade
      Includes aluminum rings & slider
      Call to order
    38. Synchronizer assembly shim kit, 3rd/4th
      #K-69241B Kit,Shims, syncrhonizer assembly, 3rd - 4th gear, NP435 transmission, qty 4
      In master rebuild kit
      Call to order
    39. Synchronizer ring, 3rd/4th
      Part of assembly #25
      Not sold separately
    40. Synchronizer hub & slider, 3rd/4th
      Part of assembly #25
      Not sold separately
    41. Snap ring (early ball-bearing input only)
      In master rebuild kit
      Comes in the master rebuild kit
    42. 3rd/4th hub face thrust needle bearing
      #96828 NP435 3rd-4th Synchro Hub Face Thrust Needle Bearing
      In master rebuild kit
      $14.95
    43. 3rd gear needle bearing
      Not sold separately
    44. Thrust washer
      In master rebuild kit
      Comes in the master rebuild kit
    45. 3rd gear
      Not sold separately
    46. Snap ring
      In master rebuild kit
      Comes in the master rebuild kit
    47. 2nd gear synchronizer ring snap ring
      Not sold separately
    48. 2nd gear, Ford & Dodge (33-tooth)
      #WT291-21 Gear, 2nd, NP435 transmission. L33T. Ford & Dodge
      Call to order
    49. 2nd gear, Dodge (32-tooth)
      #WT291-2B NP435 2nd Gear, L32T (Dodge)
      Call to order
    50. Synchronizer ring springs, 1st/2nd
      Not sold separately
    51. Synchronizer ring, 1st/2nd — aluminum with pins
      #AWT291-83 Ring, synchronizer, 1st – 2nd, NP435 transmission, aluminum w/pins
      Call to order
    52. Mainshaft
      Good used versions available — call with your application
      Not sold separately
    53. 1st/reverse slider gear, 37-tooth
      #WT291-12 NP435 1st-Reverse Slider Gear, 37-Tooth
      $91.00
    54. Mainshaft bearing spacer
      #96187 NP435 Transmission Mainshaft Bearing Spacer
      $18.95
    55. Mainshaft rear bearing
      #6308N T18/NP435/SM465 Rear Ball Bearing w/ Retaining Ring Groove
      In master rebuild kit
      $28.95
    56. Speedometer drive gear (2WD)
      Varies by model
      Not sold separately
    57. Rear tailhousing / adapter gasket
      #5362 Ford NP435 2WD Output Housing Gasket (Later Rectangular)
      $1.88
    58. Tailhousing (2WD) or adapter (4WD)
      Good used versions available — call with your application
      Not sold separately
    59. Bolt & lock washer
      Not sold separately
    60. Rear output seal, Dodge 35-spline 2WD
      #6879H Novak 124/152 Adapter Rear Output Oil Seal & Dodge 35-Spline 2WD NP435
      In master rebuild kit
      Call to order
    61. Rear output seal, IH 2WD
      #21098 NP435 Rear Output Seal (IH 2WD)
      $18.95
    62. Mainshaft yoke nut, 1" x 20 (some models)
      Not sold separately
    63. Snap ring
      #SP291-50 NP435 Small Parts Kit
      In master rebuild kit
      Sold in the NP435 small parts kit
      $30.95
    64. Needle bearing retaining washer
      In master rebuild kit
      Comes in the master rebuild kit
    65. Reverse idler needle rollers (68)
      In master rebuild kit
      Some models only
      Comes in the master rebuild kit
    66. Needle bearing separator washer
      In master rebuild kit
      Some models only
      Comes in the master rebuild kit
    67. Needle bearing inner race
      Not sold separately
    68. Reverse idler gear, bushing style
      #AWT291-10C NP435 Reverse Idler Gear, S17T-S21T, Bushing Style
      S17T-S21T
      $114.00
    69. Reverse idler shaft
      #WT258-35A Shaft, reverse idler, NP435 transmission
      Call to order
    70. Reverse idler shaft lock key
      Not sold separately
    71. Lock bolt
      Not sold separately

    Also for the NP435 — not pictured

    1. Small parts kit
      #SP291-50 NP435 Small Parts Kit
      In master rebuild kit
      $30.95
    2. Gasket set
      #WT291-55 NP435 Transmission Gasket Set
      In master rebuild kit
      $23.95
    3. Lid (shift cover) rebuild kit
      #SP291-50Y NP435 Lid Rebuild Kit
      In master rebuild kit
      $41.95
    4. Shifter tower retention rebuild kit
      #SLR-176K SM420/SM465/NP435/T176 Shifter tower retention rebuild Kit
      In master rebuild kit
      $23.95

    NP435 Shifter Top Cover Exploded Parts Diagram

    Click a number on the diagram to find that part, or search the list. 27 of the 41 parts listed can be ordered online — for anything else call 877-602-1500.

    Red parts on the diagram are in the SP291-50Y top cover rebuild kit; green parts are in the SLR-176K shifter retention kit.

    NP435 Shifter Top Cover exploded diagram
    Pinch or use + to zoom
    Available onlineCall to order / not sold separately
    1. Shifter knob, 4-speed (blank)
      #K103 Knob, transmission shifter, typ. 4 speed, blank
      Call to order
    2. Jam nut, 3/8-24
      Not sold separately
    3. Shifter tower boot, mini
      #SLR-176K SM420/SM465/NP435/T176 Shifter tower retention rebuild Kit
      Shifter retention kit
      $23.95
    4. Shifter stick retaining cap
      #SLR-176K SM420/SM465/NP435/T176 Shifter tower retention rebuild Kit
      Shifter retention kit
      $23.95
    5. Shifter stick seat domed washer
      #SLR-176K SM420/SM465/NP435/T176 Shifter tower retention rebuild Kit
      Shifter retention kit
      $23.95
    6. Shifter stick seat spring
      #SLR-176K SM420/SM465/NP435/T176 Shifter tower retention rebuild Kit
      Shifter retention kit
      $23.95
    7. Shifter cane
      Not sold separately
    8. Shifter stick alignment pins
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    9. Shift rail bore expansion plugs
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    10. Reverse light switch
      #4S-18T Switch, reverse, four-speed transmissions, spade style plugs
      Call to order
    11. Shouldered alignment bolt
      Not sold separately
    12. Top cover gasket
      #WT291-55 NP435 Transmission Gasket Set
      Sold in the NP435 gasket set
      $23.95
    13. Shift fork, reverse
      Not sold separately
    14. Shifter interlock roll pin
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    15. Reverse lug interlock plunger
      Not sold separately
    16. Reverse lug interlock spring
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    17. Reverse gate, front
      Not sold separately
    18. Reverse lug plunger C-clip
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    19. Shifter interlock roll pin
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    20. Shift rail interlock
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    21. Shifter poppet spring
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    22. Shifter poppet ball
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    23. Shift rail, reverse
      Not sold separately
    24. Shift rail, 3rd/4th
      Not sold separately
    25. Shift rail interlock
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    26. Shifter poppet spring
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    27. Shifter poppet ball
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    28. Shifter interlock roll pin
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    29. Shift fork, 3rd/4th
      #WT291-23A NP435 3rd-4th Shifter Fork
      Call to order
    30. Shift fork insert shoe, 3rd/4th
      #993549 NP435 3rd/4th Shifter Insert Shoe
      In Top cover rebuild kit
      $0.79
    31. Shifter interlock roll pin
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    32. Shift fork, 1st/2nd
      Not sold separately
    33. Shift fork insert shoe, 1st/2nd
      #996969 NP435 1st/2nd Shifter Insert Shoe
      In Top cover rebuild kit
      $0.79
    34. Shift rail gate, 1st/2nd
      Not sold separately
    35. Shift rail interlock roll pin
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    36. Shifter poppet spring
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    37. Shifter poppet ball
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95
    38. Shift rail, 1st/2nd
      Not sold separately
    39. Shift rail interlock
      #SP291-50Y NP435 Lid Rebuild Kit
      In Top cover rebuild kit
      $41.95

    Also for the NP435 Shifter Top Cover — not pictured

    1. Top cover rebuild kit
      #SP291-50Y NP435 Lid Rebuild Kit
      $41.95
    2. Shifter tower retention rebuild kit
      #SLR-176K SM420/SM465/NP435/T176 Shifter tower retention rebuild Kit
      $23.95