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E46 Fuel Pressure Regulator Modification

From MS4X Wiki
Pierburg (bottom) vs. Bosch (top) FPR

How to increase return flow and change fuel pressure.

Pierburg part numbers:

  • 3.0bar 7.21548.50.0
  • 3.5bar 7.21548.51.0
  • 5.0bar 7.21548.53.0


FPR Remove Old Bosch.png

FPR Remove Old Bosch 2.png

FPR Fit New Pierburg.png

FPR Fit New Pierburg 2.png