High flow catalytic converter to be used with our 251 235L
MK4 12V downpipe and 253 236
MK4 24V downpipes. Two O2
fittings (2.5" reduced to 55mm to OEM clamping sleeve)(46 State Only) (California, Colorado, Maine and New York use California Cats). Full 2.5" exit to be used with our "T" version exhaust.
If extra flange is needed order 253 125