service replacement cylinder heads

BIG-BLOCK SERVICE REPLACEMENT HEADS

12562925

BARE CAST-IRON GEN V AND GEN VI CYLINDER HEAD

  • Bare cast-iron head
  • 118-cc combustion chambers
  • 7/16" accessory bolt holes

12562926

BARE CAST-IRON GEN V AND GEN VI CYLINDER HEAD  

  • Bare cast-iron head
  • Machined for 2.180"/1.880" 3/8" stem valves
  • 118-cc combustion chambers
  • 3/8" accessory bolt holes (otherwise identical to P/N 12562920)

12562920

IRON GEN V AND GEN VI CYLINDER HEAD ASSEMBLY

  • Cast-iron head
  • Completely assembled with 2.180"/1.880" valves
  • 118-cc combustion chambers
  • Uses P/N 12562925 bare casting

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.