Siemens 60.0 (65.0) pound/hour Fuel Injectors

Siemens 60.0 (65.0) pound/hour Fuel Injectors


Part Number: LSJ-FIS-600-4

Shipping Weight: 1.00 pounds

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  • 2005-2007 Cobalt SS with LSJ (supercharged) engine
  • 2004-2007 ION Red Line with LSJ (supercharged) engine

These injectors flow 60 lbs/hr at 43.5 PSI (3 BAR) compared to the stock injectors which are rated at 34.1 lbs/hour (4.3 gps). Despite the high flow rate, these injectors provide a very linear flow rate even at low pulse widths allowing you to use a larger injector that normally possible without hurting idle and low speed driveability.

These injectors are able to function at high fuel pressures and don’t exhibit the high fuel pressure handling problems found with many other high flow high-impedance injectors. This makes these injectors very well suited to turbocharged and supercharged applications that see high fuel system pressures.

Engine performance and running quality is enhanced through the optimized spray pattern of these injectors. Unlike many “pencil stream” high flow injectors, these high flow injectors utilize a multi-orifice tip providing a true 30 degree spray pattern for improved mixture preparation. This results in lower BSFC and better idle quality than many injectors of less flow.

These injectors have EV1 connectors and require the use of our Casper's Fuel Injector Wire Harness in order to work in the LSJ 2.0L Ecotec application.


  • Custom PCM tuning is REQUIRED to run these injectors.
  • Injectors are brand new and flow-matched.

Fuel Injector Connector Reference

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