Located at the base of the fuel injector
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2012 Mercedes Benz CLS550 4Matic Sedan 218.391 V8 4.6L Engine Fuel Parts
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!
Includes new seal and tether
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Includes injector seal
Includes O-ring - High Pressure Pump On Engine
For High Pressure Fuel Pump
This product was last offered at the strikethrough price on
05-07-2026
One (1) Required Per Fuel Injector.