3" High Flow Y-Bridge for custom fabrication use. Not a direct OEM replacement. Does bolt to OEM intake runners. 3" Bead Roll Connection at inlet. 14 ga Aluminum neck and TIG welded CNC machined billet aluminum center section and flanges. Includes bungs for MAP sensor installation and 1/8" NPT accessory port. Gloss Black Powder Coat Finish. The factory LB7 Duramax Y-bridge is a significant restriction in the engine intake tract limiting the engine's efficiency and ability to make power when big air and fuel system modifications are in play. This kit provides a larger, better flowing, more direct path to the intake runners for high horsepower Duramax performance engines to help them breathe more efficiently.

This Part Fits:

Year	Make	Model	Submodel
2001-2004	Chevrolet	Silverado 2500 HD	Base
2001-2004	Chevrolet	Silverado 2500 HD	LS
2001-2004	Chevrolet	Silverado 2500 HD	LT
2004	Chevrolet	Silverado 2500 HD	WT
2001-2004	Chevrolet	Silverado 3500	Base
2001-2004	Chevrolet	Silverado 3500	LS
2001-2004	Chevrolet	Silverado 3500	LT
2004	Chevrolet	Silverado 3500	WT
2002-2004	GMC	Sierra 2500 HD	Base
2001-2002	GMC	Sierra 2500 HD	SL
2001-2004	GMC	Sierra 2500 HD	SLE
2001-2004	GMC	Sierra 2500 HD	SLT
2003-2004	GMC	Sierra 2500 HD	WT
2002-2004	GMC	Sierra 3500	Base
2001-2002	GMC	Sierra 3500	SL
2001-2004	GMC	Sierra 3500	SLE
2001-2004	GMC	Sierra 3500	SLT
2004	GMC	Sierra 3500	WT