04-05 GM Duramax LLY GDP High Flow 3" Y Bridge and Cold Side Kit Finish:Raw Off-road and race use only

Off-road and race use only

These manifolds also come with 1/8" NPT ports for nitrous

Trucks with the Regular Production Option (RPO) "YF5" may require an aftermarket downpipe such as Diamond Eye 321055

Available in Raw

Base kit includes 3" Pusher Max HD Charge Tube that properly supports the factory y-bridge at over 70 PSI of boost

04-05 GM Duramax LLY GDP High Flow 3" Y Bridge and Cold Side Kit Finish:Raw Off-road and race use onlyIncrease performance and flow with our upgraded 3 Inch Max Flow Bridge and Cold Side Kit. Our precision cast and CNC machined bridge section allows for maximum efficiency, as well as a perfect fit every time. Our two piece design allows for a much easier installation than the other kits on the market. (Black Powder Coat finish or Raw options)