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Flowtech Long Tube Headers

04-15 Nissan Titan/Armada & Infiniti QX56 5.6L 1-5/8" Long Tube Headers 409SS- Natural Finish

PART# 18000FLT

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Increase the horsepower and torque of your Nissan or Infiniti by bolting on these long tube Race Only headers from Flowtech. These headers are designed with 3/8" thick laser-cut flanges and 1-5/8" mandrel-bent primary tubes. They're available in either 304 or 409 stainless steel and are offered in a Natural or Polished finish for your application.


  • Smooth transition, mandrel-bent, 1-5/8” diameter primary tubes and 2-1/2” diameter collectors with merge spears for smooth flow and increased exhaust velocity
  • 3/8” thick exhaust flanges for maximum strength and leak-free seal
  • Heavy Duty 16-gauge tubing for increased strength and durability
  • Available in 409SS (18000FLT- Natural Finish or 18001FLT – Polished Finish) or 304SS (18002FLT – Polished Finish) materials for long term good looks and corrosion resistance
  • Premium gaskets included


Application04-15 Titan/Armada/QX56, V8 5.6L
Collector Diameter2.50 inch
Emission Code4
EngineNissan V8
Header FinishNatural
Header StyleLong Tube
Primary Tube Dia.1-5/8 inch
Product TypeHeaders
Tube Material409 Stainless Steel
Part Number18000FLT



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle


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