This -8 SAE AN O-Ring fitting is designed to block off an un-used fuel rail end. If your FAST LSX fuel rail installation doesn't require an in-rail fuel pressure gauge, then use this plug to seal off the un-used rail end.
See 54027 for kit that includes the 54027A 8SAE O-Ring fitting and 54027G fuel pressure gauge to install a fuel pressure gauge onto your FAST LSX fuel rails.
LSX -8 SAE O-Ring Fuel Rail Plug Fitting
FAST Plug W/Oring Sae #8 For LSX
8 SAE O-Ring Plug for LSX Rails
8 SAE Rail Plug
AN Fitting
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