VW Syncro Axle Codes and Gear Ratios

Rear gearbox and differential (transaxle unit) OEM Wheel Size Front axle differential
Diff-Lock   No Diff-Lock Diff-Lock   No Diff-Lock
Code 1.G 2.G 3.G 4.G (Top) G-G R-G Nom. Ratio Exact Final Drive Ratios Engine KW (BHP) Code Code Ratio Engine KW Code
                  Diff. Ratio Diff. x Top (1 BHP = 746 W)            
AKG 3.78 2.06 1.225 0.85 6.03 6.03 4.57 32:7 4.571428571 3.904761905 54,70,78,82 AKE 14 AKH 32:7 64,70,82 AKF
Gear teeth 34:9 33:16 49:40 41:48 31:9x28:16 31:9x28:16         (72,94,105,110)            
Exact ratio 3.77778 2.0625 1.225 0.854167 6.0277778 6.0277778                      
                                   
AAN 3.78 2.06 1.225 0.85 6.03 6.03 4.86 34:7 4.857142857 4.148809524 54,57,64,70,82 AAK 14 ADH 34:7 57,70,82 ACU
6PA 3.78 2.06 1.225 0.85 6.03 6.03 5.43 38:7 5.428571429 4.636904762 54,57,64,70,82 6P 14 ADM 38:7 51,57,70,82 6N
                      (72,76,86,94,110)            
AHA 3.78 2.06 1.225 0.78 6.03 6.03 5.83 35:6 5.833333333 4.55 51 TD (68) AKK 14       (6N)
Gear teeth 34:9 33:16 49:40 39:50 31:9x28:16 31:9x28:16                      
Exact ratio 3.77778 2.0625 1.225 0.780000 6.0277778 6.0277778                      
                                   
ALE 3.78 2.06 1.225 0.85 6.03 6.03 5.83 35:6 5.833333333 4.982638889 64,70 (86,94)   16 AAM 35:6 64,70 AHB
AHF 3.78 2.06 1.225 0.78 6.03 6.03 5.43 38:7 5.428571429 4.234285714 51 TD AGZ 14       (6N)
6ZA 3.78 2.06 1.225 0.85 6.03 6.03 5.43 38:7 5.428571429 4.636904762 57,70,82   14 ADN 38:7 57,70,82  
                      (76,94,110)            
ALK 3.78 2.06 1.225 0.85 6.03 6.03 5.43 38:7 5.428571429 4.636904762 82(16 Zoll)   16        
AND 3.78 2.06 1.225 0.85 6.03 6.03 6.16 37:6 6.166666667 5.267361111 51 TD   16        
  3.78 1.88 1.225 0.85 6.03 6.03 4.86 34:7 4.857142857 4.148809524 57,70,82 (16 Zoll) AVV 16        
  3.78 1.88 1.225 0.85 6.03 6.03 5.43 38:7 5.428571429 4.636904762 57,70 (76,94) AVH 14        
AVM 3.78 1.88 1.225 0.78 6.03 6.03 5.83 35:6 5.833333333 4.55 57,70   16        
AVN 3.78 1.88 1.225 0.85 6.03 6.03 4.86 34:7 4.857142857 4.148809524 57,70,82 (16 Zoll)   14        
AVL 3.78 1.88 1.225 0.85 6.03 6.03 5.43 38:7 5.428571429 4.636904762 57,70   14        
AVR 3.78 1.88 1.225 0.85 6.03 6.03 5.43 38:7 5.428571429 4.636904762 82 (16 Zoll)   16        
  3.78 1.88 1.225 0.78 6.03 6.03 5.83 35:6 5.833333333 4.55 51 TD AVF 14 ALN 35:6 51 ALM
  3.78 1.88 1.225 0.78 6.03 6.03 5.43 38:7 5.428571429 4.234285714 51 TD AVJ 14        
AVS 3.78 1.88 1.225 0.78 6.03 6.03 5.83 35:6 5.833333333 4.55 51 TD   14        
AVK 3.78 1.88 1.225 0.78 6.03 6.03 5.43 38:7 5.428571429 4.234285714 51 TD   14        
AVU 3.78 1.88 1.225 0.85 6.03 6.03 6.16 37:6 6.166666667 5.267361111 51 TD   16 ANB 37:6 51 ANC
                          16 AOM 37:6 51 AOL
   Without Viscous Coupling (manually operated 4WD)
AAM 3.78 2.06 1.225 0.85 6.03 6.03 4.86 34:7 4.857142857 4.148809524 57,70,82 AAL 14 ADK ** 34:7   ADG
6ZA 3.78 2.06 1.225 0.85 6.03 6.03 * 5.43 38:7 5.428571429 4.636904762 57,70,82 6Z 14 ADN 38:7   ADL
   With auxilary power take-off (Finland only)
AHX                                  
  Highest top gear ratio by combining diff. unit and gearbox ratios  (e.g. AKG diff/ AHA gears)                    
AKG/?       0.78         4.571428571 3.565714286              
Notes * 6.03 since 07/84, previously the ratio from 2WD used (only used on prototypes).   ** Differential only used on prototypes Viscous Coupling Part No.  094 409 435
Credits Chart originally compiled by Harald Holecek, Graz, Austria.  (additional calculations and amendments by Clive Smith - Club80-90) Harald@vwbus-online.de

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