3 Bolt Flange, 3" OD Collector to 3" OD Tailpipe, One Pair 2009-chevrolet-silverado-1500-esi6868132 5 in - 5 Rockers

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3 Bolt Flange, 3" OD Collector to 3" OD Tailpipe, One Pair 2009-chevrolet-silverado-1500-esi6868132 5 in - 5 RockersJust pick the reducer size that matches the diameter of the header collector. Bolt it to the collector ring, and weld on the tailpipe. If you have a header without the collector ring, use Hooker slip on reducers. They're sized to slip over the collector and weld to the exhaust pipe.