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4:1 Headers with Y-pipes 2005-09 Chevrolet Monte Carlo SS 2006-09 Chevrolet Impala SS 2005-08 Pontiac Grand Prix GXP 5.3L V8 Header Style: 4:1 Headers Material: Steel Finish: Silver Ceramic Coated Primary Tube Diameter: 1-3/4" Primary Tube Gauge: 14 Gauge Collector Attachment: 2-bolt Flange / Slip-fit Collector Diameter: 2-1/2" Tuned: No Flange Thickness: 3/8" Bolts and/or Studs Included: Yes Gaskets Included: Re-use factory manifold gaskets Y-Pipe (Crossover) Included: Yes Y-Pipe Inlet Diameter: 2-1/2" Y-Pipe Outlet Diameter: 3" Weld Up: Y-pipe outlet must be welded to exhaust inlet Catalytic Converter(s) Included: No Quantity: Sold as a Complete Kit CARB E.O. #: NOT LEGAL FOR STREET USE ON POLLUTION CONTROLLED VEHICLES Warranty: Limited Lifetime to original purchaser Notes: There is no better way to squeeze a little more power out of your V8 motor than this header kit! These shortie headers are a fantastic way to work some extra horsepower out of your car, and will have you back out on the road in no time getting where you're going a little faster. To make these headers last, we built them using industry leading 14-gauge steel tubing with 3/8" thick flanges. Topping all of that off, our headers come beautifully ceramic coated to greatly reduce under-hood temperatures and protect them from the environment. All 100% American made, and backed by our lifetime warranty. Install these headers today and feel your car's true power potential!
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