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.