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BBI Injectors: Stage 4 (2003-2007 5.9 Cummins) New



New 5.9 Cummins Performance Injectors rated at 163% Over Stock Fuel Flow= Approximately 300HP

  • Stock Injectors have a flow rate of 61.8 Liters/hour @ a pressure of 100bar.
  • For model years 2003-2007 we utilize a 143° spray angle, compatible with early and late style piston bowls
  • All injectors in each set are balanced and include a flow test sheet
  • For extreme competition projects only. The complete injector set up is altered in our stage 4 series of injectors. These injectors are designed to get the maximum amount of fuel, in the shortest amount of time, into the combustion chamber. Be careful ! These injectors are not very easy to control. These internal alterations add the advantages of better engine response and maximum performance at high rpm.

-BBI injectors may cost more than the competition, but the world of 5.9 Cummins Performance injectors is no different than anything else in life: You get what you pay for.  In other words; buy right and buy once.

-Read about spray angle compatibility below:

(In Other words, MY 04.5+ injectors are not backwards compatible to the MY03 piston design, but these MY03 Injectors ARE compatible with MY04.5+ pistons👍)

About BBI:

BBI Injectors have been developed into the finest common rail injectors presently on the market; setting the standard for common rail injectors in performance and reliability.

Big Bang Injection was founded by two Austrian gentlemen with over 30 years experience in the common rail injector industry.  Both men were previously employed directly by Bosch in their research and development facility located in Linz, Austria.

Warranty Information:

New BBI Injectors are warrantied for 2 years with unlimited miles.


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