t a  e 
REF NO. Part categories Parameter
GM GENUINE : 12611587 Water Pump Pulley
  • Attachment Type: Bolt or Stud
  • Belt Type: Serpentine
  • Color: Black
  • Groove Quantity: 6
  • Material: Steel
  • Mount Hole Diameter (IN): 0.268in
  • Mount Hole Diameter (MM): 6.8mm
  • Mount Hole Quantity: 4
  • Mounting Hardware Included: No
  • Outside Diameter (IN): 5.4
  • Outside Diameter (MM): 137
  • Pulley Type: Grooved
GM GENUINE : 24405900 Water Pump Pulley
  • Attachment Type: Bolt or Stud
  • Belt Type: Serpentine
  • Color: Black
  • Groove Quantity: 5
  • Inside Diameter (IN): 1.18
  • Inside Diameter (MM): 30
  • Material: Steel
  • Mount Hole Diameter (IN): 0.327in
  • Mount Hole Diameter (MM): 8.3mm
  • Mount Hole Quantity: 3
  • Mounting Hardware Included: No
  • Outside Diameter (IN): 4.9
  • Outside Diameter (MM): 124.6
  • Pulley Type: Grooved
GM GENUINE : 12577763 Water Pump Pulley
  • Attachment Type: Bolt or Stud
  • Belt Type: Serpentine
  • Color: Black
  • Inside Diameter (IN): 1.02
  • Inside Diameter (MM): 25.98
  • Material: Steel
  • Mount Hole Diameter (IN): 0.354in
  • Mount Hole Diameter (MM): 9mm
  • Mount Hole Quantity: 4
  • Mounting Hardware Included: No
  • Outside Diameter (IN): 4.7
  • Outside Diameter (MM): 120
  • Pulley Type: Smooth
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    Size/Parameters

    Annotated Parameter name Size range Unit