The stock HPFP on the M278 Motors is severely limited in capacity when trying to raise the output of the motor. The FX-170 adds 50% more flow, raising the fueling limits and helping you achieve more power!
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2012 Mercedes Benz S550 Base Sedan 221.173 V8 4.6L Fuel Pumps & Parts
Includes O-ring - High Pressure Pump On Engine
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Secures fuel pump into tank
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For High Pressure Fuel Pump
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This product was last offered at the strikethrough price on
05-07-2026