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Ford Motor Company

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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.
STAGE 8 LOCKING HEADER BOLTS NOTE: DHH = DOUBLE HEX HEAD BOLT, INCLUDES 3/16 RECESSED ALLEN HEAD
Application
  
Part #
Pricing
Description
4 CYLINDER        
  1.6 Liter   6100 $40.19 (8) 5/16-18x1" bolts 12pt
  1.9 Liter Rousch Racing Head 6101 $43.89 (10) 8mm-1.25x25mm bolts 6pt DHH
  2.0 Liter   6101 $43.89 (10) 8mm-1.25x25mm bolts 6pt DHH
  2.3 Liter   4928 $43.89 (8) 10mm-1.50x22mm bolts 6pt
           
INLINE 6 & 6 CYLINDER        
  2.9, 3.8 & 4.0 Liter   6919 $56.39 (12) 8mm-1.25x25mm bolts 6pt DHH
  144, 170, 200 & 250 cu/in Inline   6913 $49.97 (11) 3/8-16x1" bolts 6pt DHH
  240 & 300 cu/in Inline   6914 $59.46 (13) 3/8-16x1 1/4" bolts 12pt
  using 10mm bolts   6920 $59.46 (12) 10mm-1.50x22mm bolts 6pt
           
8 CYLINDER        
  4.6 & 5.4 Liter Modular   8906 $64.80 (16) 8mm-1.25x25mm bolts 6pt DHH
  2005 & Newer Modular   8906M $64.80 (16) 8mm-1.25x25mm bolts 6pt DHH
  5.0 Liter   8913 $64.80 (16) 3/8-16x3/4" bolts 6pt DHH
      8913A $71.83 (16) 3/8-16x1" bolts 6pt DHH
      8913B $71.83 (16) 3/8-16x1 1/4" bolts 12pt
      8933 $64.80 (16) 3/8-16x1" bolts 12pt
      8953 $117.36 (16) 3/8-16x1" bolts 6pt Stainless Steel DHH
  Small Blocks 260 - 351 cu/in   8913 $64.80 (16) 3/8-16x3/4" bolts 6pt DHH
 
351W
   8913 $64.80 (16) 3/8-16x3/4" bolts 6pt DHH
      8913A $71.83 (16) 3/8-16x1" bolts 6pt DHH
      8913B $71.83 (16) 3/8-16x1 1/4" bolts 12pt
      8933 $64.80 (16) 3/8-16x1" bolts 12pt
      8953 $117.36 (16) 3/8-16x1" bolts 6pt Stainless Steel DHH
  Big Blocks 390 - 460 cu/in   8912 $64.80 (16) 3/8-16x3/4" bolts 6pt DHH
(inc. 351C & 351M)
   8912A $71.83 (16) 3/8-16x1" bolts 6pt DHH
      8912B $71.83 (16) 3/8-16x1 1/4" bolts 12pt
      8932 $64.80 (16) 3/8-16x1" bolts 12pt
      8952 $117.36 (16) 3/8-16x1" bolts 6pt Stainless Steel DHH
           
10 CYLINDER        
  6.8 Liter Modular   8905 $79.39 (20) 8mm-1.25x25mm bolts 6pt DHH
           
2 Bolt Header Kits        
    8910A $10.90 (2) 3/8-16x1" bolts 6pt DHH
    8910B $10.90 (2) 3/8-16x1 1/4" bolts 12pt
         
ADDITIONAL LOCKING KITS:        
SMALL BLOCK FORD        
Header Collector (6) 3/8-16x1" bolts 6pt   8950 $26.99  
Intake Manifold   8928 $48.67  
Harmonic Balancer   8992 $40.08  
Oil Pan   8940 $41.68  
Valve Cover   8960B $40.08  
Valve Cover w/ 1" bolts   8960S $23.06  
Valve Cover w/ 1/4-20 nuts   8961 $20.06  
Distributor Hold-Down   8904 $ 7.17  
Pressure Plate   8959A $26.88  
Flex Plate   8967A $59.51  
Flywheel   8967 $35.66  
Automatic Transmission Pan        
  13 Bolt Pan w/ 5/16-18x1/2   8701 $33.02  
  17 Bolt Pan w/ 5/16-18x1/2   8702 $38.93  
         
BIG BLOCK FORD        
Header Collector (6) 3/8-16x1" bolts 6pt   8950 $26.99  
Intake Manifold   8928A $54.47  
Harmonic Balancer   8992 $40.08  
Oil Pan   8941 $50.63  
Valve Cover   8960B $40.08  
Distributor Hold-Down   8904 $ 7.17  
Pressure Plate   8959A $26.88  
Flex Plate   8967A $59.51  
Flywheel   8967 $35.66  
Automatic Transmission Pan        
  13 Bolt Pan w/ 5/16-18x1/2   8701 $33.02  
  17 Bolt Pan w/ 5/16-18x1/2   8702 $38.93  
         
DIESEL        
Powerstroke Turbo Bolts   3900 $43.89