HomeAir and Fuel Delivery > Fuel Injection System and Related ComponentsDelphi FP10543 Fuel Injection Pressure Regulator
Part #: FP10543

Delphi FP10543 Fuel Injection Pressure Regulator

1 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$144.06Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Geo and Nissan, Storm and Stanza
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Delphi Fuel Injection Pressure Regulator Overview

The Delphi FP10543 Fuel Injection Pressure Regulator is designed for precise fuel pressure control in Geo Storm vehicles. Constructed from durable metal, this regulator ensures consistent fuel delivery to maintain engine performance and efficiency.

  • Durable metal construction for long-lasting performance
  • Compatible with Geo Storm fuel injection systems
  • Inlet port diameter: 0.43 inches (11.0 mm), push-in type
  • Outlet port diameter: 0.31 inches (8.0 mm), hose type
  • Single inlet and outlet ports for streamlined fuel flow
  • Bolt mounting type for secure installation
  • Non-adjustable design with a system pressure rating of 44 psi
  • No gauge port included

Detailed Product Description

The Delphi FP10543 fuel injection pressure regulator is engineered to maintain a steady fuel pressure of 44 psi within the fuel injection system of the Geo Storm. Its metal body provides resistance to wear and corrosion, ensuring reliable operation under various driving conditions. The regulator features a push-in inlet port with a diameter of 0.43 inches (11.0 mm) and a hose-type outlet port measuring 0.31 inches (8.0 mm), facilitating proper fuel flow and connection compatibility. With one inlet and one outlet port, this component simplifies fuel delivery management. The bolt mounting type allows for a secure and stable fitment in the fuel system assembly. This part is non-adjustable, designed to maintain factory-specified pressure without manual tuning.

Common Applications and Issues Addressed

  • Regulates fuel pressure to prevent engine performance issues such as stalling or hesitation
  • Helps resolve fuel leaks caused by worn or damaged pressure regulators
  • Maintains consistent fuel delivery to improve fuel efficiency and emissions
  • Prevents fuel system pressure fluctuations that can cause rough idling
  • Supports proper operation of the fuel injection system in Geo Storm models

Installation Notes and Tips

  • Ensure the vehicle is cool and fuel system pressure is relieved before installation
  • Verify inlet and outlet port sizes match existing fuel lines (0.43 inch inlet, 0.31 inch outlet)
  • Use appropriate tools to securely bolt the regulator in place without over-tightening
  • Inspect fuel lines and connections for leaks after installation
  • Consult the Geo Storm service manual for specific installation procedures and torque specifications

Quality Assurance and Warranty

Delphi manufactures the FP10543 fuel injection pressure regulator to meet OEM standards for fit, form, and function. The metal construction ensures durability and resistance to fuel system contaminants. While specific warranty details may vary, Delphi parts typically come with a limited warranty covering defects in materials and workmanship. Always verify warranty terms with the parts provider or vehicle manufacturer.

BrandDelphi
Part NumberFP10543
AdjustableNo
Gauge PortNo
Inlet Port Diameter0.43
Inlet Port Diameter11.0
Inlet Quantity1
Inlet TypePush In
MaterialMetal
MaterialMetal
Mounting TypeBolt
Outlet Port Diameter0.31
Outlet Port Diameter8.0
Outlet Quantity1
Outlet TypeHose
System Pressure44

This part fits 1 vehicles. Search below:

YearMakeModelPositionNotes
1993GeoStormN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

2184422670-D550022670-D55015G11688-97074-507-0800-15497074507PR42PR451

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.