Ford Transit 2002 Owner's Manual page 479

77. Loosen the bolts of the rear retaining strap of the
catalytic converter.
78. NOTE: Install a new catalytic converter
gasket.
NOTE: Do not tighten the catalytic converter
bolts for the moment.
Install the catalytic converter.
79. Loosely attach the catalytic converter to the
catalytic converter bracket using
80. Tighten the catalytic converter bolts.
81. Install the front retaining strap of the catalytic
converter.
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M8 x 40 bolts.