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1970-1981 Corvette Fan Clutch to Water Pump Studs

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Part #: 645-257
GM Part #: 3964274
Availability: Out of Stock
Fits Years:
  • 1970-1981
$16.99
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1970-1981 Fan Clutch to Water Pump Studs

Original style 1970-1981 Corvette fan clutch to water pump studs. Includes nylon locking feature as original. Studs have both fine and coarse threads. Kit includes 4 studs with lock washers and nuts.
  • 12 Piece Car Set
  • 4 Studs with Nylon Locking Feature
  • 4 Washers
  • 4 Nuts

Note: Can also be used for replacement thermostatic or torque limiting fan clutches to mount the fan blade to the clutch.

Note: At Mid America Motorworks, we call these parts FTF, or Final Touch Fasteners. When you’ve spent countless hours of work, worry and detail, we don’t’ want you to lose that final assembly look by using incorrect, rusted or mismatched fasteners. From correct finish, to headmarks to fastener design, we endeavor to have the Restoration Correct Fasteners to add that Final Touch to your Corvette Restoration Project.



Also known under these part numbers: (For reference only)

  • 243156
  • 3964274
  • BL-35
  • BL-358