Standard Ignition Fuel Injection Pressure Regulator P/N:PR556
Standard Motor Products
Standard Ignition PR55 fuel injection pressure regulator for the 1991-1994 Nissan Sentra 4-cylinder 2.0L and other vehicles holds fuel pressure steady at the injectors. It is designed to give precise fuel delivery for smoother operation and less engine strain.
A failing regulator can show up as hard starting, a rough idle, poor throttle response or a fuel smell. A weak fuel pump, a clogged fuel filter or a leaking injector can be behind those signs too, so find the cause before buying. A shop can test fuel pressure.
The 1995-1996 Nissan Tsuru 4-cylinder 2.0L and the 1991-1994 Infiniti G20 4-cylinder 2.0L take this regulator too, and so do more Nissan models. To check your own car, look it up in the "Vehicles it fits" section.
Fit and size
Build and materials
One fuel injection pressure regulator with an O-ring and a caution sheet. Mounting hardware is not included, so plan on new fasteners. This listing holds one regulator, and each vehicle takes one.
Interchange: 2-19533 · 800-167
21884 · 2267053J00
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
Is the Standard Ignition PR55 right for a 1991-1994 Nissan Sentra 4-cylinder 2.0L?
Yes. The Standard Ignition PR55 fuel injection pressure regulator is listed for the 1991-1994 Nissan Sentra 4-cylinder 2.0L. For any other car, look yours up in the "Vehicles it fits" section.
Does the PR55 pressure regulator come with an O-ring?
Yes. This regulator comes with an O-ring and a caution sheet. Mounting hardware is not included.
What operating pressure does the Standard Ignition PR55 run at?
The Standard Ignition PR55 has a listed operating pressure of 43 psi, and the regulator is adjustable.
What signs can a failing fuel injection pressure regulator show?
Hard starting, a rough idle or a fuel smell can go with a failing regulator. A shop can test fuel pressure to confirm.
How is the PR55 regulator validated?
Its engineering validation includes 200+ hours of vibration testing, 1000+ hours of extreme heat and cold operational testing and on-vehicle testing.
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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.