4 X 1978-83 Mercedes 240D Cylinder Head Bolt 12 X 100 mm 12 Point 615 990 01 12

4 X OEM Victor Reinz 12 mm X 100 mm XZN 12 Point Cylinder Head Bolt for 1978 - 1983 Mercedes 240D, 615 990 01 12

• "Using new head bolts when performing a cylinder head installation is always a good idea however, on late-model engines that came from the factory with TTY (torque-to yield) head bolts, replacement is an absolute necessity. TTY bolts are designed to exert the maximum clamping force for a tight head gasket seal, however they permanently stretch and could fail if re-used."
  
  

• This is a set of 4 M12 X 1.75 X 100 mm 12 point XZN later style cylinder head bolt.
  
  
• These will fit select models of the 1978 thru 1983 Mercedes 240D diesel engines, PLEASE see the application fitment table to verify fit and quantity used.
  
  
• These bolts also use a washer, which must also be used.
  
  
• We also sell the following items:
  
  
  • M12 X 120 mm cylinder head bolt.
    
    
  • Head bolt washer.
    
    
  • XZN 12 point drive socket head tool.