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With the shallow head on the stock bolt, it is common for the head to round out during removal. This HEAVY DUTY Bolt has been redesigned to allow nearly double the tool engagement. Proper engagement of the Allen wrench is crucial for accurate torque during reassembly to avoid a fuel leak at the return line fitting. The unique head shape offers the needed strength while maintaining proper clearance on other engine components.
Unique head shape maintains proper clearance
Posted by Bill on 11th Jan 2017
After stripping numerous "oem" banjo bolts, following the torque specifications, being extra careful, etc etc...I finally found these bolts! The 5mm hole is twice as deep allowing for more contact patch, positive engagement of your tools, and consistent torque (AND REMOVAL) of your injector line bolts. These are only a few bucks more each than the GM bolts that strip....don't even consider an injector replacment without replacing all of your bolts with these, you will thank me!