Chrysler - Mopar
  Flow Rating @ .42 BSFC - Est. HP Duty Cycle .47 BSFC - Est. HP Duty Cycle .52 BSFC - Est. HP Duty Cycle .57 BSFC - Est. HP Duty Cycle    
Part Number lbs/hr cc/min PSI BARS 80% 95% 80% 95% 80% 95% 80% 95% Impedance Application
4118661 - - - - - - - - - - - - - 6-3.3l, 6-3.8l
4275312 27.0 283.8 55 3.79 51.4 61.1 46.0 54.6 41.5 49.3 37.9 45.0 - 4-2.2l Turbo
4288276 - - - - - - - - - - - - - 4-2.5l
4306018 32.0 336.3 55 3.79 61.0 72.4 54.5 64.7 49.2 58.5 44.9 53.3 - 4-2.2l Turbo
4306024 27.0 283.8 55 3.79 51.4 61.1 46.0 54.6 41.5 49.3 37.9 45.0 - 4-2.2l Turbo
4307616 - - - - - - - - - - - - - 4-2.5l
4307618 - - - - - - - - - - - - - 4-2.5l
4307619 - - - - - - - - - - - - - 4-2.5l
4307620 - - - - - - - - - - - - - 4-2.5l
4418213 33.0 346.8 55 3.79 62.9 74.6 56.2 66.7 50.8 60.3 46.3 55.0 - 4-2.5l Turbo
4418258 33.0 346.8 55 3.79 62.9 74.6 56.2 66.7 50.8 60.3 46.3 55.0 - 4-2.2l Turbo, 4-2.5l Turbo
4418474 27.0 283.8 55 3.79 51.4 61.1 46.0 54.6 41.5 49.3 37.9 45.0 - 4-2.2l Turbo
4418475 27.0 283.8 55 3.79 51.4 61.1 46.0 54.6 41.5 49.3 37.9 45.0 - 2.2l
4504322 33.0 346.8 55 3.79 62.9 74.6 56.2 66.7 50.8 60.3 46.3 55.0 - 4-2.2l Turbo, 4-2.5l Turbo
4532586 52.0 546.5 55 3.79 99.0 117 88.5 105 80.0 95.0 73.0 86.7 - 2.5l
4554044 - - - - - - - - - - - - - 6-3.8l
4554127 - - - - - - - - - - - - High 6-3.8l, 6-3.9l
4573062 - - - - - - - - - - - - - 6-3.5l
4612402 - - - - - - - - - - - - - 6-3.3l, 6-3.8l
4612175 - - - - - - - - - - - - - 6-3.3l, 6-3.8l
4612176 - - - - - - - - - - - - - 6-3.3l
4612177 - - - - - - - - - - - - High 6-3.8l, 6-3.9l
4663376 - - - - - - - - - - - - - 4-2.0l, 6-3.3l
4669011 - - - - - - - - - - - - - 4-2.0l
4669471 - - - - - - - - - - - - - 4-2.0l
5227386 - - - - - - - - - - - - - 4-2.0l, 4-2.4l
5245344 - - - - - - - - - - - - - 10-8.0l
5277098 - - - - - - - - - - - - - 6-3.0l
5277470 - - - - - - - - - - - - - 6-3.3l
5277739 - - - - - - - - - - - - - 4-2.0l, 4-2.4l
5277751 - - - - - - - - - - - - - 6-3.0l
5277757 - - - - - - - - - - - - - 6-3.0l
5277895 34.0 357.3 55 3.79 64.8 76.9 57.9 68.7 52.3 62.1 47.7 56.7 - 2.2l, 4-2.5l
53003956 - - - - - - - - - - - - - 6-4.0l
53007232 - - - - - - - - - - - - - 4-2.5l
53007809 - - 43.5 - - - - - - - - - High v8-5.2l
53030262 - - 43.5 - - - - - - - - - High v8-5.2l, 8-5.9l
53030343 - - - - - - - - - - - - - 6-4.0l
53030778 - - - - - - - - - - - - - 4-2.5l, 6-4.0l, 8-5.2l, 8-5.9l
53040003 - - - - - - - - - - - - - 10-8.0l
53041073 - - - - - - - - - - - - - 10-8.0l
P4452204 35.0 367.9 55 3.79 66.7 79.2 59.6 70.7 53.8 63.9 49.1 58.3 - Mopar Perferance
P4452803 29.0 304.8 55 3.79 55.2 65.6 49.4 58.6 44.6 53.0 40.7 48.3 - Mopar Perferance
P4452804 34.0 357.3 55 3.79 64.8 76.9 57.9 68.7 52.3 62.1 47.7 56.7 - Mopar Perferance
P4529495 42.0 441.4 55 3.79 80.0 95.0 71.5 84.9 64.6 76.7 58.9 70.0 - Mopar Perferance
P5249452 52.0 546.5 55 3.79 99.0 117 88.5 105 80.0 95.0 73.0 86.7 Low Mopar Perferance

 


 
The flow rates shown are at 100% duty cycle (static) and are for gasoline.
Although we do show some rating pressure most injectors are designed to operate 36.25 PSI / 2.5 BAR and 43.5 PSI / 3 BAR - Chrysler and Porsche some times use 55 PSI / 3.7 BAR
Remember this is a pressure differential across the injector, this becomes important in turbo/supercharged engines.
They need to use a regulator that increases pressure as the boost increases.
Injectors are rated at "X" psi, but most will work and flow more fuel at a higher pressure.
There is a calculator on the main page to convert flow numbers from one fuel pressure differential to another.
Fuel pump flow decreases as the pressure goes higher, so make sure your fuel pump has enough flow at the pressure you raise it to.
Estimated Horsepower figures are calculated at 80% duty cycle and 95% duty cycle also based on BSFC (Brake Specific Fuel Consumption).
    .42 BSFC - Race Engine
    .47 BSFC - Hi Performance Engine
    .52 BSFC - Stock or with Light Modifications Engine
    .57 BSFC - Supercharged / Turbo Charged Engine
Electronic fuel injectors come in two types Low (1-5 ohms) and High (12-16 ohms) Resistance (Impedance). NOTE this can be measured between the 2 pins with a multi-meter.
Like with other engine parts Bigger is not always better.

These numbers have come from various magazines, web sites, and manufactures catalogs.