t a  e 
REF NO. Part categories Parameter
ENGINETECH : ECR321 Connecting Rod
ENGINETECH : ECR322 Connecting Rod
GM GENUINE : 12590584 Connecting Rod
  • Hollow Or Solid: Solid ; 
  • Length Center Bore To Center Bore (in): 6 ; 
  • Length Center Bore To Center Bore (mm): 152.4 ; 
  • Main Bearing Bore Diameter (in): 2.374 ; 
  • Main Bearing Bore Diameter (mm): 60.298 ; 
  • Main Bearing Cap Bolt Quantity: 2 ; 
  • Material: Steel ; 
  • Mounting Hardware Included: Yes ; 
  • Wrist Pin Bore Diameter (in): 0.945 ; 
  • Wrist Pin Bore Diameter (mm): 24.014 ; 
ENGINETECH : ECR327 Connecting Rod
ENGINETECH : ECR328 Connecting Rod
GM GENUINE : 12654958 Connecting Rod
  • Hollow Or Solid: Solid ; 
  • Length Center Bore To Center Bore (in): 6.565 ; 
  • Length Center Bore To Center Bore (mm): 166.76 ; 
  • Main Bearing Bore Diameter (in): 2.052 ; 
  • Main Bearing Bore Diameter (mm): 52.126 ; 
  • Main Bearing Cap Bolt Quantity: 2 ; 
  • Mounting Hardware Included: Yes ; 
  • Wrist Pin Bore Diameter (in): 0.788 ; 
  • Wrist Pin Bore Diameter (mm): 20.012 ; 
GM GENUINE : 12608432 Connecting Rod
  • Hollow Or Solid: Solid ; 
  • Length Center Bore To Center Bore (in): 5.921 ; 
  • Length Center Bore To Center Bore (mm): 150.4 ; 
  • 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 ; 
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