Flowtech 11530 Headers – GM Truck Headers 68-91283-400Pri Tube Col Size 1-3/4×3

STANDARD FULL LENGTH HEADERS, HI-TEMP BLACK PAINT — Tube Size 1.75″, Collector Size 3″, Precision Engineered To Get Maximum Performance And Fuel Economy From The Engine, Features FLOWTECH’s Exclusive Thick MandrelvFormed Power Plenum Collector, All Ports Are Precisely Fitted And Finished With Sturdy, LeakvProof OvRinged Port Seals, Comes With All Mounting Hardware Including Bolts, Nuts And Premium Gaskets, Without A.I.R. Tubes, Must Modify Stock Exhaust To Retain Catalytic Converter, Not For Pollution Controlled Vehicles, With Oxygen Sensor Use Reducer Part Number 10105FLT For 2.5″ Flange And Part Number 10110FLT For 3″ Flange, Must Use Original Factory Big Block Engine Frame Mounts & HardwareFinish: Black