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Thumbnail Filmstrip of 7.3 Powerstroke High Volume Oil Pump | DIeselsite DS_LPOP73 Images
Dieselsite's HIGH VOLUME Low Pressure Oil Pump will fit the 1994-2003 7.3L PSD. This high volume LPOP supplies more volume to handle the higher demands of larger HPOPs. Also provides additional oil for twin turbos. Most importantly, it will provide a better supply of lubricating oil to protect your engine with better lubrication and cooling to main bearings and piston oilers.
We set out to make not only a larger pump, but also a better built pump. Each set of gears is custom cut and ground as a set and then final grounding to housing to achieve final clearance. This insures perfect mating from gear to gear and from the gears to both the front cover and the timing cover. This insures less wear and better efficiency. We have seen the "off the shelf" aftermarket replacement pumps be out of parallel from the back to the front surface of the pump as well as the mounting surface to be machined so poorly that they wobbled on a flat surface. They rely on the gasket to seal (which it does), but that surface inconsistency allows the gears to move in an undesirable manner. This could cause low oil pressure, and in extreme cases, scoring or damage to the timing cover.
Our new HV LPOP (high volume low pressure oil pump) includes the new front cover with dual lip viton seals, new pump cover to front engine cover gasket, and new oil pump gears designed to increase flow and pressure while reducing cavitation.
Installation is simple requiring only a few basic tools as well as a fan removal tool and a harmonic balancer puller. (these can be rented/borrowed from a local Auto Zone if you don't own them) Install time is about 2 hours.
No other modifications must be made. This can be bolted onto any configuration from stock to highly modified engines.
Stock Pump:
Startup (65º)
Idle (680 RPM): 40 psi
Hi Idle (1100 RPM): 50 psi
Warm (170º):
Idle (680 RPM): 20 psi
Crusing (2200 RPM): 40 psi
Free Rev (3500 RPM): 52 psi
HV Pump (After initial install):
Startup (65º)
Idle (680 RPM): 52 psi
Hi Idle (1100 RPM): 65 psi
Warm (170º):
Idle (680 RPM): 32 psi
Crusing (2200 RPM): 55 psi
Free Rev (3500 RPM): 70 psi
HV Pump (After 6000 miles):
Startup (65º)
Idle (680 RPM): 51 psi
Hi Idle (1100 RPM): 62 psi
Warm (170º):
Idle (680 RPM): 32 psi
Crusing (2200 RPM): 55 psi
Free Rev (3500 RPM): 68 psi
Dieselsite's HIGH VOLUME Low Pressure Oil Pump will fit the 1994-2003 7.3L PSD. This high volume LPOP supplies more volume to handle the higher demands of larger HPOPs. Also provides additional oil for twin turbos. Most importantly, it will provide a better supply of lubricating oil to protect your engine with better lubrication and cooling to main bearings and piston oilers.
We set out to make not only a larger pump, but also a better built pump. Each set of gears is custom cut and ground as a set and then final grounding to housing to achieve final clearance. This insures perfect mating from gear to gear and from the gears to both the front cover and the timing cover. This insures less wear and better efficiency. We have seen the "off the shelf" aftermarket replacement pumps be out of parallel from the back to the front surface of the pump as well as the mounting surface to be machined so poorly that they wobbled on a flat surface. They rely on the gasket to seal (which it does), but that surface inconsistency allows the gears to move in an undesirable manner. This could cause low oil pressure, and in extreme cases, scoring or damage to the timing cover.
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Dieselsite's HIGH VOLUME Low Pressure Oil Pump will fit the 1994-2003 7.3L PSD. This high volume LPOP supplies more volume to handle the higher demands of larger HPOPs. Also provides additional oil for twin turbos. Most importantly, it will provide a better supply of lubricating oil to protect your engine with better lubrication and cooling to main bearings and piston oilers.
We set out to make not only a larger pump, but also a better built pump. Each set of gears is custom cut and ground as a set and then final grounding to housing to achieve final clearance. This insures perfect mating from gear to gear and from the gears to both the front cover and the timing cover. This insures less wear and better efficiency. We have seen the "off the shelf" aftermarket replacement pumps be out of parallel from the back to the front surface of the pump as well as the mounting surface to be machined so poorly that they wobbled on a flat surface. They rely on the gasket to seal (which it does), but that surface inconsistency allows the gears to move in an undesirable manner. This could cause low oil pressure, and in extreme cases, scoring or damage to the timing cover.
Our new HV LPOP (high volume low pressure oil pump) includes the new front cover with dual lip viton seals, new pump cover to front engine cover gasket, and new oil pump gears designed to increase flow and pressure while reducing cavitation.
Installation is simple requiring only a few basic tools as well as a fan removal tool and a harmonic balancer puller. (these can be rented/borrowed from a local Auto Zone if you don't own them) Install time is about 2 hours.
No other modifications must be made. This can be bolted onto any configuration from stock to highly modified engines.
Stock Pump:
Startup (65º)
Idle (680 RPM): 40 psi
Hi Idle (1100 RPM): 50 psi
Warm (170º):
Idle (680 RPM): 20 psi
Crusing (2200 RPM): 40 psi
Free Rev (3500 RPM): 52 psi
HV Pump (After initial install):
Startup (65º)
Idle (680 RPM): 52 psi
Hi Idle (1100 RPM): 65 psi
Warm (170º):
Idle (680 RPM): 32 psi
Crusing (2200 RPM): 55 psi
Free Rev (3500 RPM): 70 psi
HV Pump (After 6000 miles):
Startup (65º)
Idle (680 RPM): 51 psi
Hi Idle (1100 RPM): 62 psi
Warm (170º):
Idle (680 RPM): 32 psi
Crusing (2200 RPM): 55 psi
Free Rev (3500 RPM): 68 psi
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4/5 Stars out of 1 Reviews
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Brandon Franklin (Granville) | January 30th, 2024
Overall a great product, excellent quality and install was a breeze. Only thing is FFD needs to update there photo. The item photo shows the product in a steel housing with a black finish coating. This is now not the case. I recieved a uncoated aluminum housing on my pump. I contacted dieselsite with questions and they have since changed designs. It's now a bare 7075 aluminum housing so painting will be necessary depending on your application.
Proposition 65 Warning Information -
P65Warnings.ca.gov
Fits: 7.3 Powerstroke 1994-2003
Fits: 7.3 Powerstroke 1999-2003
Fits: 7.3 Powerstroke 1994-2003
Fits: 7.3|6.0 Powerstroke 1994-2007
Fits: 7.3 Powerstroke 1999-2003
Fits: 7.3|6.0|6.4 Powerstroke 1994-2010