Dorman 674-859XD Driver Side Exhaust Manifold for Specific Models

Want to make sure your new exhaust manifold performs better and lasts longer than the original? No need to buy a replacement and get it specially coated. This manifold comes with a specialized ceramic coating that more evenly distributes heat, both helping to prevent thermal cracking as well as enabling smoother exhaust gas flow.

• Premium replacement - this exhaust manifold features a specialized ceramic coating designed to improve durability and performance on select vehicles
• Reduces future failures - by evenly distributing heat, coating reduces uneven hot and cold spots that lead to cracks, and decreases inconsistent expanding and contracting that leads to gasket failures
• Optimizes performance - made to smooth the interior manifold surface and keep heat within the manifold, leading to higher exhaust velocity and optimal operation
• Improves appearance - coating is highly corrosion-resistant, maintaining like-new appearance for years while other cast manifolds show significant unsightly rust
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  Vehicle model years this part fits:
  Chevrolet W3500 Tiltmaster: 2003, 2004, 2005, 2006, 2007
  Chevrolet W4500 Tiltmaster: 2003, 2004, 2005, 2006, 2007
  GMC W3500 Forward: 2004, 2005, 2006, 2007
  
• GMC W4500 Forward: 2003, 2004, 2005, 2006, 2007
  Isuzu NPR: 2003, 2004, 2005, 2006, 2007
  Isuzu NPR-HD: 2003, 2004, 2005, 2006, 2007
  Workhorse Custom Chassis P42: 2004, 2005
  Workhorse Custom Chassis W42: 2006, 2007
  
• Workhorse FasTrack FT1461: 2004, 2005
  Workhorse FasTrack FT1801: 2004, 2005
  Workhorse W16: 2006, 2007
  Workhorse W18: 2006, 2007
  Workhorse W42: 2006, 2007
  Workhorse W62: 2006, 2007