Gearbox Reference / Ratio / Ring and Pinion Technical Data

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VW Type 1 / T14 and Related + Type 2 Split Screen Gearbox Reference Table

Model Year, Ring and Pinion, Ratio, Final Drive reference chart

Gearbox Codes
Code	Engine Size	Final Ratio	Model & Chassis Number
AA	1200	4.375	From Chassis No 0 981 810
AB	1300	4.375	Up to 8/70
AC	1500	4.125	also some 1300 from 8/70
AD	1200	4.375	Limited Slip Differential
AE	1300	4.375	Limited Slip Differential
AF	1500	4.125	L.S. Differential >8/70; also some 1300 8/70>
AG	1200	4.375	Type 147 Fridolin
AH	1500/1600	4.125	IRS from 8/68 – 8/72
AK	1500/1600	3.875	Type 181
AL	1500-1600	3.875	Type 181 with LSD
AM	1300	4.375	Saloon and Cabrio from 8/70
AN	1600	3.875	Karmann Ghia with IRS from 8/70
AO	1600	4.125	LSD 8/70 – 8/72
AR	1600	4.125	LSD 8/70 – 8/72
AR	1600	3.875	Karmann Ghia with LSD from 8/70
AS	1600(GT)	3.875	From 3/72
AT	1600	3.875	1303s and Cabrio from 3/72
AU	1600	3.875	1303s and Cabrio from 3/72 with LSD
BA	1300/1500	4.375	Semi Automatic from 8/68 – 8/70
BC	1300/1500	4.375	Semi Automatic from 8/68 – 8/70 with LSD
BE	1600	4.125	Semi Automatic from 8/68 – 8/70
BF	1600	4.125	Semi Automatic from 8/68 – 8/70 with LSD
BG	1300	4.125	Karmann Ghia Semi Automatic from 8/70
BH	1300	4.125	K. Ghia Semi Automatic with LSD
BJ	1300	4.375	Semi Automatic from 8/70
BK	1300	4.375	Semi Automatic from 8/70 with LSD
DA	1500/1600	4.125	Type 3 Swing-axle up to 8/68
DB	1500/1600	4.125	Type 3 Swing-axle up to 8/68 with LSD
DC	1500/1600	4.125	Type 3 IRS from 8/68
DD	1500/1600	4.125	Type 3 IRS from 8/68 with IRS

Final Drive, Ring and Pinion General Rules

Standard / General rule R&P for unmodified gearboxes are as follows:

– 4.375 T1 (1200-1300cc Gearboxes)
– 4.125 T1 (1300-1500cc Gearboxes (Also Most Split Screen Reduction Box Units))
– 3.880 T1 (1600cc Gearboxes)
– 3.440 T1 (Never originally available, reproduction only)

Note: Reduction box combinations will reduce final drive by ratio, check your year and ratios to calculate.

– 4.571 T2 (082, 091 Boxes) Some 5 and 6 Rib Only
– 4.857 T2 (Oddball Year)
– 5.375 T2 (1600c T1 Engine Bay Windows)

4th Gear standard Ratios

Gears in certain cases can be crossed between boxes, note: currently keyed shaft boxes have no available new R&P combinations since Brazil ceased production, all current final drive sets are splined (late) only. Higher values produce higher acceleration, lower values produce higher top speed.

– 0.91
– 0.889
– 0.821
– 0.770

View our full range of re-conditioned and upgraded Type 1 / 14 and Type 2 Split Screen Gearboxes available here

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VW Type 2 / 002 / 091 Bay Window Gearbox Reference Table

Final Drive, Ring and Pinion General Rules

Standard / General rule R&P for unmodified gearboxes are as follow

VIN	4th gear ratio	R&P ratio	R&P * 4th
218 000000 – 211 2 276560	0.821	5.375	4.413
211 2 276561 – 213 2 068547	0.821	5.375	4.413
213 2 068548 – 213 2 300001	0.889	5.375	4.778
214 2 000001 – 215 2 300001	0.889	4.857	4.318
216 2 000001 – 219 2 300001	0.889	4.571	4.064

Gearbox Ribs Explained (Applicable to T2 Bay Window Gearboxes only, does not work for T25 Vanagon).

If you are unsure if you have a T2 Bay Window Gearbox, it is easy to tell by where the gear linkage comes out. On a Bay Window Gearbox it comes straight out the back (opposite end to the bellhousing). If it is a T25 box it will come out of the side on the nosecone.

Note:  The terms 002 and 091 gearboxes comes from the first 3 digits on the code found on the underside of the gearbox.

There were at least twelve variations of gearbox for the 1968-71, 1972-75 & 1976-79 VW 1600cc Type 2s, including many combinations of limited-slip differential and higher final-drive ratio for mountainous territories.

The CE code, corresponds to a 1972-75 VW T2 Bay Window, with standard open differential and standard final-drive ratio

There were two manual gearbox codes for the 1974-75 VW 1800 Type 2 (Type 4 Engine):

CM – Standard open differential
CN – Limited-slip differential (LSD)

Please note: This list does NOT necessarily include, gearbox details for the 1968 onwards, Argentinian, Brazilian & Mexican built vehicles (either Bay Window models or Bay Window/Splitscreen hybrid models). Some of these models had factory-fitted VW 1600 Type 1 engines with twin carburettors, for either fuel-ethanol (high-compression ratio of 10:1) or Petrol, 1400cc or 1800cc water-cooled VW engines for either fuel-ethanol or petrol and a water-cooled VW diesel engine. 

Input Shaft Variations:

 

1968-79 VW Type 2, Four-Speed Manual Gearboxes Table Below: 

Code	Engine (CC)	M-Code	1st	2nd	3nd	4th	Reverse	Final Drive	Years
CA	1600	–	3.80	2.06	1.26	0.82	3.61	5.375	1968-71
CB	1600	M92	3.80	2.06	1.26	0.82	3.61	5.857	1968-71
CC	1600	M220	3.80	2.06	1.26	0.82	3.61	5.375	1968-71
CD	1600	M92 & M220	3.80	2.06	1.26	0.82	3.61	5.857	1968-71
CE	1600	–	3.80	2.06	1.26	0.82	3.80	5.428	1972-75
CF	1600	M92	3.80	2.06	1.26	0.82	3.80	5.857	1972-75
CG	1600	M220	3.80	2.06	1.26	0.82	3.80	5.375	1972-75
CH	1600	M92 & M220	3.80	2.06	1.26	0.82	3.80	5.857	1972-75
CK	1700	M251	3.80	2.06	1.26	0.82	3.80	5.375	1972-73
CL	1700	M220 & M251	3.80	2.06	1.26	0.82	3.80	5.375	1972-73
CM	1800	M251	3.80	2.06	1.26	0.89	3.80	4.857	1974-75
CN	1800	M220 & M251	3.80	2.06	1.26	0.89	3.80	4.857	1974-75
CP	2000	M251	3.78	2.06	1.26	0.88	3.28	4.571	1976-79
CT	2000	M220 & M251	3.78	2.06	1.26	0.88	3.28	4.517	1976-79
CU	1600	–	3.78	2.06	1.26	0.82	3.28	5.428	1976-79
CV	1600	M220	3.78	2.06	1.26	0.82	3.28	5.428	1976-79
CW	1600	M92	3.78	2.06	1.26	0.82	3.28	5.857	1976-79
CX	1600	M92 & M220	3.78	2.06	1.26	0.82	3.28	5.857	1976-79

 

M-Code Key
M92	Mountain ratio for final drive
M220	Limited-slip differential (LSD)
M251	1700/1800/2000 Type 4 Engine

 

View our full range of re-conditioned and upgraded T2 Bay Window Gearboxes available here