2008-09 Pontiac G8 GT 6.0L Headers. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. Starting with a CNC cut 3/8" thick flanges into 1-7/8" diameter primaries, Flow into 3" slip-fit collectors with merge spike, then fitting onto a set of 3" high-flow catted leads with notched 2-1/4" ID outlets that connects to factory exhaust. This factory connection system works with minor trimming to the OEM leads. Header bolts, RTV, Dipstick spacer, Clamps and install instructions all included. Mill finish, All TIG welded for strength and durability. These kits come with a lifetime warranty and proudly made in the USA.. Stainless Works, Pg8hcatstfc, 2008-09 Pontiac G8 GT 6.0L Headers. 1-7/8" primaries, 3" High-flow Catalytic converters, 3" Slip-fit collectors, Increased Air Flow, Factory Connection Point, CNC mandrel bent, 304 Stainless Steel, O2 bungs, Mill Finish, TIG welded, Lifetime Warranty.. 2008-09 Pontiac G8 GT 6.0L Headers. All tubes are CNC mandrel bent for optimal flow. 1-7/8" primaries, 3" slip-fit collectors then fitting in to 3" high-flow cats. This factory connect system works with minor trimming to the OEM leads.. Stainless Works 2008-09 Pontiac G8 GT Headers 1-7/8in Primaries 2-1/2in Lead Factory Connect w/ Cats. Stainless Works, 2008-09 Pontiac G8 GT 6.0L Headers, Catted, Factory Connect.. 1-7/8" primaries with 3" catted lead pipes. Factory Connection.. 2008-09 Pontiac G8 GT 6.0L Headers.. 2008 thru 2009 Pontiac G8 GT 6.0L.. Exhaust Header Pipe Kit. Exhaust System. Header Kit

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