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Sitemap for Stage 8 - The World's Best Locking Fasteners & Nuts and Bolts
amcsideLocking Header Bolts
AMC Locking Header Bolt Kits

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Stage 8 Locking Header Bolts easy to use and they are real assurance against horsepower loss or gasket failure created by loose nuts or bolts. The unique patented and trademarked functional design is just three pieces: a bolt (4130 Alloy Steel), a locking retainer and a spring clip. The header bolt kits are application specific as either hex head with a 3/16 recessed allen head or 12 point, USA or metric. All Stage 8 Locking Header Bolt Kits are sold with all of the necessary hardware for your application.

locking header bolts
STAGE 8 LOCKING HEADER BOLTS NOTE: DHH = DOUBLE HEX HEAD BOLT, INCLUDES 3/16 RECESSED ALLEN HEAD
Application
 
Part #
 
Description
4 CYLINDER       Please Call For Pricing
  150 cu/in   4918   (8) 3/8-16x1 1/4" bolts 12pt
           
6 CYLINDER        
  192, 232, 258 cu/in   6917   (12) 3/8-16x1 1/4" bolts 12pt
  242 cu/in EFI   6918   (11) 3/8-16x1 1/4" bolts 12pt
           
8 CYLINDER        
  V8's with 3/8" bolts   8916S   (12) 3/8-16x3/4" bolts 6pt DHH
      8916A   12) 3/8-16x1" bolts 6pt DHH
      8936   (12) 3/8-16x1" bolts 12pt
      8956   (12) 3/8-16x1" bolts 6pt DHH
  V8's with 5/16" bolts   8915   (12) 5/16-18x7/8" bolts 6pt DHH
      8935   (12) 5/16-18x1" bolts 12pt
  V8's with 5/16" & 3/8" bolts   8918S   (8) 5/16-18x7/8" & (4) 3/8-16x3/4" bolts 6pt DHH
      8939   (8) 5/16-18x1" & (4) 3/8-16x1" bolts 12pt
           
ADDITIONAL LOCKING KITS:        
         
Turbo Kit (4) 8mm-1.25 nuts   3950   (4) 8mm-1.25 nuts
Turbo Kit (4) Bolts   3902   (4) 8mm-1.25x 25mm bolts 6pt
Turbo Kit (4)10mm-1.25 nuts   3951   (4) 10mm-1.25 nuts
Turbo Kit (4) Bolts   3903   (4) 10mm-1.25x 25mm bolts 6pt
Turbo Kit (4)10mm-1.50 nuts   3952   (4) 10mm-1.50 nuts