6.6L Duramax MPROP - FCA 0928400535 bosch, fca, lb7, cp3, fcv, flow, control, actuator, bosch mprop, duramax, cp3, R928400535, 0928400535

6.6L Duramax MPROP - FCA 0928400535 (490523AA)

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This is a new fuel pressure regulator for common rail fuel injection pumps. These are also known as MPROP's. The symptoms of a faulty MPROP would be rail pressure that is too high or too low.The MPROP will often fail before the pump does, getting...
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