Vibrant Exhaust Manifold Flange for Porsche 996/911 Motor - 3/8in Thick - Sold in Pairs Cat-Back Systems This real world testing is

This real world testing is combined with testing performed at K&N's own Dust Retention Laboratory in conformity with the ISO 5011 test protocol

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Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 50137

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Vibrant Exhaust Manifold Flange for Porsche 996/911 Motor - 3/8in Thick - Sold in Pairs Cat-Back Systems This real world testing isVibrant Performance has developed one of the largest offerings of Exhaust Manifold Flanges in the industry. All of our Exhaust Manifold Flanges have had their exhaust port size optimized for either standard wall round tubing or Schedule 10 weld fittings.