t a  e 
REF NO. Part categories Parameter
ENGINETECH : ECR407 Connecting Rod
ENGINETECH : ECR408 Connecting Rod
GM GENUINE : 12574879 Connecting Rod
  • Hollow Or Solid: Solid ; 
  • Length Center Bore To Center Bore (in): 5.984 ; 
  • Length Center Bore To Center Bore (mm): 152 ; 
  • Main Bearing Bore Diameter (in): 2.375 ; 
  • Main Bearing Bore Diameter (mm): 60.33 ; 
  • Main Bearing Cap Bolt Quantity: 2 ; 
  • Material: Powder Forged ; 
  • Mounting Hardware Included: Yes ; 
  • Wrist Pin Bore Diameter (in): 0.906 ; 
  • Wrist Pin Bore Diameter (mm): 23.007 ; 
GM GENUINE : 12609597 Connecting Rod
  • Hollow Or Solid: Solid ; 
  • Length Center Bore To Center Bore (in): 6.144 ; 
  • Length Center Bore To Center Bore (mm): 156.05 ; 
  • Main Bearing Bore Diameter (in): 2.348 ; 
  • Main Bearing Bore Diameter (mm): 59.628 ; 
  • Main Bearing Cap Bolt Quantity: 2 ; 
  • Mounting Hardware Included: Yes ; 
  • Wrist Pin Bore Diameter (in): 0.945 ; 
  • Wrist Pin Bore Diameter (mm): 24.014 ; 
GM GENUINE : 12613195 Connecting Rod
  • Hollow Or Solid: Solid ; 
  • Length Center Bore To Center Bore (in): 0.09 ; 
  • Length Center Bore To Center Bore (mm): 2.29 ; 
  • Main Bearing Bore Diameter (in): 1.02 ; 
  • Main Bearing Bore Diameter (mm): 58.19 ; 
  • Main Bearing Cap Bolt Quantity: 12 ; 
  • Material: Steel ; 
  • Mounting Hardware Included: Yes ; 
  • Wrist Pin Bore Diameter (in): 1.02 ; 
  • Wrist Pin Bore Diameter (mm): 25.96 ; 
  • Wrist Pin Journal Bushing Width (in): 0.92 ; 
  • Wrist Pin Journal Bushing Width (mm): 23.27 ; 
GM GENUINE : 12649190 Connecting Rod
  • Hollow Or Solid: Solid ; 
  • Length Center Bore To Center Bore (in): 6.1 ; 
  • Length Center Bore To Center Bore (mm): 154.9 ; 
  • Main Bearing Bore Diameter (in): 2.23 ; 
  • Main Bearing Bore Diameter (mm): 56.52 ; 
  • Main Bearing Cap Bolt Quantity: 6 ; 
  • Material: Forged Steel ; 
  • Mounting Hardware Included: Yes ; 
  • Wrist Pin Bore Diameter (in): 0.94 ; 
  • Wrist Pin Bore Diameter (mm): 23.97 ; 
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