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Master Index

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  Page number:  NP-903-4y0
GEAR, Cluster (Countershaft)
47487 parts in stock comprising 18299 unique part numbers from 55937 numbers listed. (11/14/2025)
Style Color
Code
OA/Thick OD/Deep ID/Wide Our Part Number Price Picture
Tooth Counts ID Marks
Year Miscellaneous Info  
Years   Part Info Number  
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29-23-18-14 teeth BRG       NP-903-4Y-0132-GK Price Picture
not
available
L29-23-18-R14  
  Input = 21 teeth
2nd maishaft = 25 teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8D  
    GEAR, Countershaft Cluster 1738216  
29-23-18-14 teeth LYO     1" NP-903-4Y-012W-60 Price Picture
not
available
L29-23-18-R14  
  Input = 22 teeth
2nd mainshaft = 25 teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8E  
    GEAR, Countershaft Cluster 1853627  
31-23-18-14 teeth LLE     1" NP-903-4Y-00C0-HW Price Picture
not
available
L31-23-18-R14  
  Input = 20 teeth
2nd mainshaft = 25 teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8C  
    GEAR, Countershaft Cluster 1633761  
31-23-19-31 teeth YEK     1" NP-903-4Y-014V-60 Price Picture
not
available
L31-23-19-R31  
  Input = 20 teeth
2nd mainshaft = teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8B  
    GEAR, Countershaft Cluster 1486637  
32-23-18-14 teeth LVG 6-13/16" 3-62/64" 1" NP-903-4Y-00J9-FQ Price Picture
not
available
L32-23-18-R14 <>
  Input = 19 teeth
2nd mainshaft = 25 teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8F  
    GEAR, Countershaft Cluster 1949843  
32-23-19-14 teeth BGO       NP-903-4Y-0131-EH Price Picture
not
available
L32-23-19-R14 <>
  Input = 19 teeth
2nd mainshaft = 25 teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8A  
    GEAR, Countershaft Cluster 697823  
32-25-19-14 teeth BKR       NP-903-4Y-0130-AF Price Picture
not
available
L32-25-19-R14 <>
  Input = 19 teeth
2nd mainshaft = 23 teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8  
    GEAR, Countershaft Cluster 853885  
33-24-15-12 teeth OYY 7" 4-6/64"   NP-903-4Y-00JA-N8 Price Picture
not
available
L33-24-15-R12 <>
  Input = teeth
2nd mainshaft = 24 teeth
1st/Rev mainshaft = 26 teeth
 
    GEAR, Countershaft Cluster WT243X-8  
    GEAR, Countershaft Cluster 2892808  
33-24-18-14 teeth KYE 6-13/16" 4-5/64" 1" NP-903-4Y-007L-GC Price Picture
not
available
L33-24-18-R14 <>
  Input = 18 teeth
2nd mainshaft = 24 teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8G  
    GEAR, Countershaft Cluster 2538068  
33-24-18-14 teeth LGR 6-13/16" 4-5/64" 1" NP-903-4Y-0133-JM Price Picture
not
available
L33-24-18-R14 <>
  Input = teeth
2nd mainshaft = 24 teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8G  
    GEAR, Countershaft Cluster 2205132  
34-25-18-14 teeth OYL 6-13/16" 4-12/64" 1" NP-903-4Y-012X-82 Price Picture
not
available
L34-25-18-R14  
63 Input = teeth
2nd mainshaft = 23 teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8L  
    GEAR, Countershaft Cluster 2204555  
34-25-18-14 teeth GYB 6-13/16" 4-12/64" 43/64" XW NP-903-4Y-00JC-HE Price Picture
not
available
L34-25-18-R14 <A>
  Input = teeth
2nd mainshaft = 23 teeth
1st/Rev mainshaft = 29 teeth
 
    GEAR, Countershaft Cluster WT243-8L  
    GEAR, Countershaft Cluster 2538069  
  Last updated:  11/14/2025
Master Index


Related items:

WT243-2C    MAINSHAFT
WT243-14K    RING, 2nd & 3rd Synchro Stop
1853855    GEAR, Ms 1st & Reverse Slidin
2538933    GEAR, Speedometer Driven
2125179    MAINSHAFT
640412    COUNTERSHAFT
AWT243-205    SYNCHRO ASSY, Ms 2nd & 3rd
3113036    SYNCHRO ASSY, Ms 2nd & 3rd
1484602    GEAR, Main Drive
1115595    SYNCHRO ASSY, Ms 2nd & 3rd
AWT243-205H    SYNCHRO ASSY, Ms 2nd & 3rd
WT243-16T    GEAR, Main Drive
2204616    MAINSHAFT
3113247    SYNCHRO STOP RINGS, Ms 2nd & 3rd
1347975    
640396    SLEEVE, Sec & Direct Speed
WT243-16S    GEAR, Main Drive
1350364    
1949842    GEAR, Main Drive
WT243-16M    GEAR, Main Drive
2204554    GEAR, Main Drive
1853695    GEAR, Reverse Idler
63131    
640391    SYNCHRO ASSY W/RINGS, Ms 2nd & 3rd
WT243-16A    
1322764    SLEEVE, Ms 2nd & 3rd Synchro Cl
WT243-11B    GEAR, Ms 2nd
2892811    SYNCHRO ASSY, Ms 2nd & 3rd
1949362    GEAR, Main Drive
WT243-11A    GEAR, Ms 2nd
1853954    SYNCHRO ASSY, Ms 2nd & 3rd
WT243-2E    MAINSHAFT
2464878    SYNCHRONIZER ASSEMBLY
63124    
WT243-16N    GEAR, Main Drive
WT88-15C    SYNCHRONIZER SLIDER
WT243-2D    MAINSHAFT
J3212733    GEAR, Speedometer Driven
AWT243-205B    SYNCHRO ASSY, Ms 2nd & 3rd
WT243-205D    HUB, Ms 2nd & 3rd Synchro
 
Known to fit Borg Warner, Chrysler applications.

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  Last update:  11/14/2025