Keep fuel pressure steady across the injectors with the Delphi Fuel Injection Pressure Regulator FP10429. It installs as a direct-fit replacement for the listed application: the 1990-1995 Suzuki Samurai. A fuel injection pressure regulator manages the pressure in the fuel rail, maintaining a consistent pressure differential across the injectors and returning excess fuel back toward the tank so the engine receives the fuel volume it expects.
- Mechanical job: Regulates fuel-rail pressure to hold the correct differential across the injectors for accurate metering.
- Return control: Diverts surplus fuel back toward the tank to stabilize supply pressure.
- Signs this part may need replacing: If a failed regulator is the cause, symptoms can include rough idle, hard starting, poor fuel economy, or a fuel odor — diagnose the cause before replacing.
- Direct fit: Designed to replace the original regulator on the listed application.
Interchange: 5G1325 · 23049 · 800-414 · 800414 · PR302 · 15160-80C40 · 1516080C40 · 1561077E00 · 15610-80C40 · 1561080C40 · PR4028. Manufacturer part number FP10429.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this fuel injection pressure regulator do?
It regulates the pressure in the fuel rail, holding a consistent pressure differential across the injectors and returning excess fuel toward the tank so the engine gets the fuel volume it expects.
What vehicles does the Delphi FP10429 fit?
It is a direct-fit replacement for the 1990-1995 Suzuki Samurai. Check the Buyer's Guide tab to confirm it matches your vehicle.
What are the signs a fuel pressure regulator may need replacing?
Rough idle, hard starting, poor fuel economy, or a fuel odor can point to a regulator issue. Diagnose the cause first, since these symptoms have other possible sources.
What interchange numbers does this part replace?
It cross-references 5G1325, 23049, 800-414, PR302, 15160-80C40, 1561077E00, 15610-80C40, and PR4028 (plus compact no-hyphen forms).
Is this a Delphi part?
Yes. It is manufactured by Delphi with part number FP10429, offered as a direct-fit replacement for the listed application.
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