The oil pump’s most difficult task is to supply oil to the connecting rod bearing that is the farthest from the pump.  To reach this bearing, the oil travels from three to four feet, turns numerous square corners through small holes in the crankshaft to the rod bearing.


The rod bearing doesn’t help matters.  It is traveling in a circie which means centrifugal force is pulling the oil out of the bearing.  The size of the gears or rotors determines the amount of oil a pump can move at any given rpm.  Resistance to this movement creates the pressure. 


If a pump is not large enough to meet the demands of the engine, there wiii not be any pressure.  Or if the demands of the engine are increased beyond the pumps capabilities there wiii be a loss of oll pressure.  This is where high volume pumps come in; they take care of any increased demands of the engine.


Increases in the engine’s oil requirements come from higher rpm, being able to rev faster, increased bearing clearances, remote oil cooler and/or filter and any combination of these. Most high volume pumps also have a increase In pressure to help get the oil out to the bearings faster.



NOTE::  Add an extra half quart or so of oil to your engine


High Volume Oil Pump - Ford 4.0L OHC/SOHC V6

    • Ford 4.0L SOHC V6 / 4.0L OHV V6


*Many products will require the use of a direct shipping quote from one of our CSR agents due to new DIM weights and measure changes as of Jan 10th, 2018 from major carriers.

Packages greater than a square cubic foot are now required to use a “volumetric weight” based upon length, width, height of a package from most carriers which alters actual weights. Oversized / Unique shaped packages are most affected and may not apply to your specific purchase(s). However, IN ORDER to save you, the customer, shipping costs, associated fees, and to keep product costs down, we are taking action to give direct shipping quotes based upon delivery methods available. Your full name and email address, required in the checkout, is so we can offer you a shipping quote. Your item(s) will NOT ship without communication from our CSR agents. We apologize for any inconveniences.*