RPC Copper Collector Gasket Inside Dia 2.5" #R7501X 5633100 The bore diameter size -

The bore diameter size - 105mm

010" thick

5 Bar) and adaptor hose Professional 9 piece kit supplied in a blow mould case with custom moulded storage tray

HEDMAN HEADER FLANGE Gaskets for CHEVY 396-454 and ZZ502

RPC Copper Collector Gasket Inside Dia 2.5" #R7501X 5633100 The bore diameter size -RPC Exhaust Header Reducers are a must when updating your exhaust system or just simply adding or replacing a set of headers. These header reducers are made from heavy gauge aluminized tubing and designed for headers with a 3 bolt triangular flange. RPC Collector Gaskets will keep all exhaust gases flowing through your headers, not around the flange, for a leak proof seal. Each header collector gasket is made of the same copper high temperature