Flange Size: 3in flange port bolt center width is 4.1in/10.41cm, 2.5in flange port bolt center width is 3.9in/9.91cm and the height is 2in/5.08cm. 3in Flange Bolt Center Width: Approx. Application: Exhaust extension flange can quickly convert 2.5in and 3.0in exhaust fittings to extend the exhaust pipe, compatible with most vehicles.
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