Main bearing set. Silverline steel backing on an aluminium face.
.5 case/ .25 crank/1.0 thrust
T2 Splitscreen to 1967
T2 Kombi 1600cc 1968 to 1979
If you are replacing old bearings without machining your crank or case, you just measure the old bearings to determine their sizes.
If you are having the crank and/or case machined, find out from your machinist what size they have been machined too.
Finally, many old cases have had the thrust surface of the rear main bearing cut, so this requires a special OVERSIZED thrust. The standard size between the two flanges on the rear main is 22mm. Oversized thrust are available in plus 1mm and plus 2mm. This is identified with a “OS” at the end of the part number.
The standard engine case bearing saddle size is 65MM. This is the bearing O.D.(outside diameter)