Hold steady fuel pressure across your injectors with the Standard Ignition Fuel Injection Pressure Regulator PR331. It drops in as a direct-fit replacement for the 2004-2006 BMW X3, restoring proper fuel-system regulation when the original regulator has failed.
A fuel injection pressure regulator manages the pressure of fuel delivered to the injectors, adjusting it against engine load and manifold vacuum so the injectors receive a controlled, consistent supply. If a worn or leaking regulator is the cause of your driveability trouble, this unit replaces it.
- Direct-fit replacement: fits the listed 2004-2006 BMW X3 application.
- Regulates fuel pressure: maintains the correct pressure to the fuel injectors for proper metering.
- Replacement regulator: serves as a replacement for a worn or failed original unit.
Signs the regulator may need replacing include rough idle, hard starting, poor fuel economy, or a fuel odor. Diagnose the underlying cause before replacing, as these symptoms can have other sources.
Interchange: 16146766158 · 21881 · PRDL443 · 2-19799 · 219799 · 800-443 · 800443
Manufacturer part number PR331
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicle does the PR331 fit?
It is a direct-fit replacement for the 2004-2006 BMW X3. Check the Buyer's Guide tab to confirm it matches your vehicle.
What does a fuel injection pressure regulator do?
It manages the pressure of fuel delivered to the injectors, adjusting against engine load and manifold vacuum so the injectors receive a controlled, consistent supply.
What are signs my regulator may need replacing?
Rough idle, hard starting, poor fuel economy, or a fuel odor can be signs. Diagnose the cause first, since these symptoms can have other sources.
What numbers does the PR331 interchange with?
It cross-references 16146766158, 21881, PRDL443, 2-19799 (219799), and 800-443 (800443).
What is the manufacturer part number?
The manufacturer part number is PR331 from Standard Ignition.
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