42 lb/hr (440cc) Siemens Deka Fuel Injectors High Impedance (Short Style)

Category: fuel injectors

Type: fuel injector

Vendor: Siemens Deka

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Ultra-Compact, high flow injector at just 48mm end to end! These injectors flow 42 lbs/hr at 43.5 PSI ( 3 BAR ) and up to 67 lbs/hr at 87 PSI! In addition, these units are high-impedance. Despite the high flow rate, they are linear and controllable at low pulse widths and have been used in ULEV applications! This allows you to use a larger injector than normally possible without hurting idle and low speed driveability. Adding to the flexibility of application, these units are high-impedance; making them compatible with most ECUs, while delivering the most flow available in a High-Impedance injector.


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 are enhanced through the optimized spray pattern. Unlike competitors “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 with less flow.


Coil Resistance: 12.5 Ohms / High Impedance / High-Z (No ECM driver modifications required)
Static Flow Rate @ 43.5PSI ( 300kPa ) w/Gas: 42 lb/hr = 440 cc/min
Static Flow Rate @ 87PSI ( 600kPa ) w/Gas: 67 lb/hr = 703 cc/min
Turn on time
Turn off time:
Connector: Minitimer (Bosch EV1)
Series: DEKA 4 ( DEKA IV )
Orifice Type: Multi-orifice
Spray Pattern: 30 Degree Spray Cone
Factory fitted with Viton upper and lower o-rings
48mm end to end
Equivalent Part Numbers:
Siemens FI11420 or 108-420 ( 108420)

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