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WANSMOKE  has the best products with the best prices.  
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      Features & Benefit:       Cast passenger T4 manifold - thick head flange w/ 2.5" v-band outlet  
  Cast driver side manifold  
  Designed to Integrate w/ LS Swap Applications & Components  
  Increase Engine Exhaust Output and Efficiency  
  Computerized Mandrel-Bended to Maximize Air Flow Smoothness  
  (1) O2 Sensor Insertion Bungs Insertion  
  100% Brand New Items, Never Used Or Installed  
     Application:       1999-2013 Silverado 1500  
  2001-2006 Silverado 1500 HD  
  1999-2013 GMC Sierra 1500  
  2001-2006 GMC Sierra 1500 HD  
  2002-2006 Avalanche 1500  
      Item Content:       1x HotSide Manifold  
  1x ColdSide Manifold  
      Specifications:       T4 flange  
  2.5" Exhaust V-band outlet  
           Attention:       Compatible with Chevy Vortec LS 4.8L / 5.3L / 6.0L / 6.2L engine or swap only  
  **294Cu / 325Cu / 364Cu / 376 Cu Engine  
  Your valid phone number is very necessary for the shipping, otherwise we can't guarantee that the package would safely arrive.  
  Don't hassle to contact us if item stuck, unknown or fault installation !!