Features

  • Cupless injector bore - no injector cups to leak again ever!
  • New aluminum casting
  • New valves, valve guides, new springs, and new valve seals
  • CNC cut, multi-angle valve job

Product Details

GMC Sierra 1 Engine VIN Character 2004, Freedom Series Duramax Cylinder Head with Cupless Injector Bore by Fleece Performance Engineering®. Fleece Performance Engineering is recognized as a premier manufacturer of aftermarket automotive and diesel performance products. The company is renowned for its innovation, quality, and outstanding service, continually setting new benchmarks in diesel performance technology.

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