The flywheels used with these gearboxes are dual mass versions (petrol engines) to eliminate the noise that 3-axle (3-shift) gearboxes can make in neutral, and a regular (single mass) flywheels for the diesel engine.
Dual-mass flywheels are used with these gearboxes for petrol engines to reduce the noise they make when in neutral, while single-mass flywheels are utilized for diesel engines.