They are all M10 bolts, Head size is 17 mm Across the Flats.
the 4 into the front corners of heater channels are 50 mm long, the 2 into the top of the axle beam are 35 mm long
the 4 into the front corners of heater channels are 50 mm long, the 2 into the top of the axle beam are 35 mm long