1992-1996 C4 ACDelco Fuel Pressure Regulator Assembly LT-1 LT-4 19160410 - OEM Number(s) (19160410)
Maintain proper fuel delivery and engine performance with an ACDelco fuel pressure regulator designed for correct OE operation.
This Corvette fuel pressure regulator assembly is designed for 1992-1996 C4 models equipped with LT1 and LT4 engines. The regulator is responsible for maintaining proper fuel pressure at the injectors, ensuring correct fuel delivery under varying engine loads and operating conditions.
A failing fuel pressure regulator can cause poor performance, rough operation, hard starting, and loss of power. This ACDelco replacement restores factory fuel pressure control to help your Corvette perform as intended.
Fits the Following Corvette Models:
C4 Coupes and Convertibles with LT1: 1992, 1993, 1994, 1995, 1996.
C4 Coupes and Convertibles with LT4: 1996.
Features / Benefits:
• ACDelco fuel pressure regulator assembly for 1992-1996 Corvette
• Maintains proper fuel pressure at fuel injectors
• Helps restore correct engine performance and drivability
• Supports proper fuel delivery under varying engine loads
• Ideal replacement for weak or failing original regulators
• OE-style fit and function
• Fits LT1 and LT4 equipped Corvettes
• GM reference part number: 19160410
Material / Finish:
Factory-style metal and composite construction engineered for reliable fuel system operation and durability.
Because Details Matter
Fuel pressure regulation is critical to LT1 and LT4 engine performance. Replacing a failing regulator helps restore smooth operation, proper power delivery, and the responsive driving experience your Corvette was engineered to provide.
Also known under these part numbers: (For reference only)
- 19160410
- 217-3062
- 707773261750
How to Install Adjustable Fuel Pressure Regulator LT1-LT4
Fits:
- 1992-1996 C4 Corvette LT1
- 1996 C4 Corvette LT4
- 1993-1997 Camaro LT1
- 1993-1997 Firebird LT1
- Other GM LT1/LT4 Applications
Mid America Motorworks Technical Tip
MAM Part Number: 647033
Mid America Motorworks provides restoration and maintenance parts for Corvette enthusiasts. Use the following instructions as a general guide for installing the adjustable fuel pressure regulator on your LT1 or LT4-equipped vehicle.
Adjustable Fuel Pressure Regulator Installation Procedure
Important Safety Information
- Perform installation only with the engine cold and in a well-ventilated area.
- Wear proper eye protection.
- Ensure there are no sparks, open flames, heaters, or ignition sources nearby before servicing the fuel system.
Step 1 – Connect Fuel Pressure Gauge
Hook up a fuel pressure test gauge to the fuel rail Schrader valve test port.
Recommended Tool:
Fuel Pressure Test Gauge (#100-612 or equivalent)
It is important that fuel pressure is verified before installing the new regulator. Failure to check base pressure may prevent proper tuning adjustments later.
Step 2 – Verify Existing Fuel Pressure
- Start the engine.
- Allow engine to idle.
- Check fuel pressure with the vacuum line connected and disconnected.
Important:
Engine must be fully warmed to operating temperature during pressure testing.
Step 3 – Relieve Fuel Pressure
- With the fuel pressure gauge still connected, hold the gauge hose end over a suitable fuel-safe container.
- Slowly release fuel pressure using the pressure relief fitting on the gauge hose.
Warning:
Fuel may spray during pressure release. Protect painted surfaces and avoid fuel contact with hot components.
Step 4 – Remove Fuel Rail Bolts
Remove the four bolts securing the fuel rails to the intake manifold.
Carefully lift the fuel rail assembly upward to gain access to the fuel pressure regulator.
Step 5 – Remove Original Fuel Pressure Regulator
- Remove the large retaining nut securing the regulator.
- Remove the fuel line retaining clip.
- Carefully disconnect the fuel line from the regulator.
- Remove the T-27 Torx fastener securing the regulator to the fuel rail.
Step 6 – Install New Adjustable Regulator
- Install the supplied O-ring onto the new regulator before installation.
- Position the regulator onto the fuel rail.
- Reinstall the T-27 Torx fastener.
- Reconnect the fuel line and retaining clip.
- Reinstall the retaining nut.
Step 7 – Reassemble Fuel Rail
Reinstall the fuel rail assembly onto the intake manifold and tighten all mounting bolts securely.
Step 8 – Set Initial Fuel Pressure
LT1 and LT4 engines are very sensitive to fuel pressure adjustments.
Recommended Initial Setting:
- Start with approximately 46.5 PSI
- Vacuum hose disconnected
Adjustment Tips:
- Make initial changes in 1 PSI increments
- Fine tune in 1/2 PSI increments for best drivability and performance
Final Inspection
- Verify there are no fuel leaks.
- Confirm proper O-ring seating.
- Recheck fuel pressure after installation.
- Inspect all fuel line connections before road testing.
- Reinspect system after initial drive cycle.