From EPC
Item 5 in red comes up as clamp.
So it looks like the tubular washers I need are not available separately.
Time to make some out of some stainless 15mm rod.



WDE000601 Silencer assembly exhaust system - RH 1 334.29 3 WDE000621 Silencer assembly exhaust system - RH 1 315.11 3 WDE000700 Silencer assembly exhaust system - RH 1 302.33 3 WDE000720 Silencer assembly exhaust system - RH 1 290.70 4 WDE000591 Silencer assembly exhaust system - LH 1 376.81 4 WDE000611 Silencer assembly exhaust system - LH 1 315.11 4 WDE000690 Silencer assembly exhaust system - LH 1 302.33 4 WDE000710 Silencer assembly exhaust system - LH 1 290.70 5 WCL000020 Clamp - 60mm - exhaust 1 29.78 6 WCD001791 Converter assembly-manifold exhaust system - RH 1 369.14 6 WCD001960 Converter assembly-manifold exhaust system - RH 1 0.00 7 WCD001811 Converter assembly-manifold exhaust system - LH 1 369.14 7 WCD001950 Converter assembly-manifold exhaust system - LH 1 0.00 8 FS106307 Screw-flanged head - M6 x 30 2 0.48 9 WDE000660 Bracket - LH, with rubbers - top OR mounting rear silencer 1 12.48 9 WDE000670 Bracket - RH, with rubbers - top OR mounting rear silencer 1 12.48 10 WDE000680 Bracket - lower - mounting rear silencer 2 7.55 11 WCS000200 Mounting-rubber exhaust system 1 0.00 12 WDB000010
Bracket-exhaust mounting - rear 2 0.00 13 WYH000200 Bracket - exhaust 1 20.88