Billet 6061 full-length block offs when you have spare injector spots you don't need straight away, this block offs help keep your twin rail intact and pressurised. Spec's 14mm O-ring, fill body injector Don't worry about missing injector spots - with these billet 6061 full-length block offs, your twin rail stays fully sealed and ready to run whenever you need it. With a 14mm O-ring and fill body injector, you won't have to compromise on performance or reliability for your fuel system needs.

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