15 x 3 HydraMat®, Rectangle 16 105 dad 4 V8 1999 2007 mr gasket 4 V8 1999 2007 Ford F 150 281 4 25 Brand Hooker Color Silver Emission Code 5 Fitment Universal Inlet Connection Type Pipe Connection Inlet Diameter (in) 3 Inlet Position Center Material Aluminized Steel Mounting Type Uses Factory Hangers Muffler Series Aero Chamber Muffler Type Reflection Outlet Connection Type Pipe Connection Outlet Diameter (in) 3 Outlet Position Center Overall Length (in) 17 Product Type Muffler Shape Oval Sound Level Aggressive Type of Muffler Chambered Warning California Proposition 65 HydraMats are also available in other sizes and shapes to fit a variety of stock fuel tanks and or race fuel cells Surface tension and fluid wicking are the secrets of the HydraMat