Delphi Mechanical Fuel Pump P/N:MF0121
Delphi MF0185 mechanical fuel pump for the 1959-1961 Chevrolet Impala V8 5.7L, the 1961-1965 Impala V8 6.7L, the 1962-1963 Impala V8 5.3L, the 1964-1966 Impala V8 5.4L, the 1966 Impala V8 4.6L and other vehicles moves fuel from the tank toward the engine. Delphi builds all of its fuel pumps to its OE standards.
Hard starting, sputtering under load or a fuel smell near the pump can mean the pump is weak or leaking. A clogged fuel filter or a restricted fuel line can be behind the same signs, so find the cause before you buy. Each engine takes one pump.
The vehicles it fits include the 1958 Chevrolet Bel Air V8 4.6L, the 1958-1961 Bel Air V8 5.7L, the 1961-1963 Bel Air V8 6.7L, the 1963-1966 Bel Air V8 5.3L and the 1966 Bel Air V8 4.6L, plus the 1958 Chevrolet Biscayne V8 4.6L, the 1958-1961 Biscayne V8 5.7L, the 1961-1963 Biscayne V8 6.7L, the 1963-1966 Biscayne V8 5.3L and the 1966 Biscayne V8 4.6L. If your car is not named here, look up its year and engine under the Buyer's Guide tab.
Fit and size
Build and materials
One mechanical fuel pump, one gasket and one instruction sheet.
Interchange: 4030172 · 4030194 · 4657 · AMF0185 · M3120 · 6415616 · M23017 · B0093P · SP1062MP · SP1227MP
This part cross-references / interchanges with the following part numbers:
Will the Delphi MF0185 fit a 1966 Chevrolet Impala V8 4.6L?
Yes. Delphi MF0185 fits the 1966 Chevrolet Impala V8 4.6L, and that application takes one pump.
Does the Delphi mechanical fuel pump come with a gasket?
Yes. The Delphi MF0185 box holds the pump, a gasket and an instruction sheet.
What can a failing mechanical fuel pump feel like while driving?
Hard starting, sputtering or stalling under load, or a fuel smell can point to a weak pump or a leak. A fuel leak needs prompt attention from a shop.
What should I check on the fuel filter when swapping this fuel pump?
Check the fuel filter whenever the fuel pump is replaced. The included instruction sheet covers the installation steps.
Does the Delphi MF0185 interchange with M3120?
Yes. M3120 is one of the numbers Delphi MF0185 replaces, along with 4030172 and 4657.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.