These spur gears cause less power loss by generating less lateral thrust than helical gears, which reduces bearing wear.

Volkswagen had opted for a bevel gear because it gives less noise and, with the original engine power, it does not give excessive wear to the camshaft bearings.

In the set with adjustment option, the camshaft pinion is adjustable, so that the camshaft timing can be adjusted through the hole in the oil pump.

This assembly is recommended for the mounting of reinforced valve springs.