Catalyst

The left-hand and right-hand downpipe assemblies feature:

Catalytic converter with palladium/rhodium coated elements. The elements are uncoated for markets with only leaded fuel.
Retained to the exhaust manifold flange by four threaded studs. Joint-to-joint sealing is with a gasket.
Engine-mounted bracket providing downpipe mounting by two nuts to the torque converter housing and two bolts to the downpipe.