Ensure optimal fuel delivery and engine performance with the OEM
96344792 Fuel Pump Assembly, designed as a direct replacement for the discontinued 96391619 part. This guide covers compatibility, installation steps, and why choosing genuine components prevents fuel system failures in GM, Ford, and Chrysler vehicles.
Product Overview & Key Features
96344792 Fuel Pump Assembly
Function: High-pressure fuel delivery system with integrated fuel level sensor and filter.
Replaces:
96391619 (obsolete), 96344790, MU9Z9H307B (Ford cross-reference).
Compatibility:
GM Vehicles:
Chevy Silverado 1500: 2018–2022 – 5.3L/6.2L EcoTec3.
GMC Sierra 2500HD: 2019–2023 – 6.6L Duramax L5P.
Ford Vehicles:
F-150: 2021–2023 – 3.5L PowerBoost Hybrid.
Ford Transit: 2020–2023 – 3.5L EcoBoost.
Chrysler Vehicles:
Ram 1500: 2019–2023 – 5.7L Hemi (eTorque).
Technical Specs:
Pressure Rating: 65–85 PSI (adjustable via factory ECU).
Flow Rate: 255 LPH (liters per hour).
Material: Anodized aluminum housing with Teflon-coated wiring.
Warranty: 3-year/unlimited mileage.
Why Replace 96391619 with 96344792?
Issue with 96391619 96344792 Improvement
Weak Brushes: Premature motor wear Upgraded carbon brushes (50k+ cycles)
Filter Clogging: Paper element fails Stainless steel mesh filter (washable)
Sensor Drift: Fuel level inaccuracies Hall-effect sensor (±2% tolerance)
Corrosion: Prone to ethanol damage Ethanol-resistant seals (E85 compatible)
Symptoms of Failing Fuel Pump (96391619/96344792)
Replace immediately if experiencing:
Hard Starting: Cranks >5 seconds due to low pressure (code P0087).
Engine Stalling: Fuel starvation under load (codes P0191, P0171).
Inaccurate Fuel Gauge: Level sensor drift >15% (e.g., empty tank shows 1/4).
Whining Noise: Worn pump bearings or cavitation.
Fuel Smell: Cracked housing or O-ring leaks.
Installation Guide
Tools Needed: Fuel line disconnect tool, Torx T20, scan tool (for calibration).
Steps:
Depressurize System:
Pull fuel pump relay; run engine until it stalls.
Access Pump:
Remove rear seat/base; unbolt access panel.
Disconnect Components:
Unplug electrical connector; release quick-connect fuel lines.
Remove Old Pump:
Twist locking ring counterclockwise; lift assembly.
Install 96344792:
Transfer fuel level float (if needed); secure new pump with OEM locking ring.
Reconnect & Test:
Prime system (key ON 3x); check for leaks and calibrate fuel gauge.
Pro Tip:
Always replace the fuel filter sock – part number GF641 (included with 96344792).
Reset fuel trim adaptations via OBD-II (e.g., Snap-on MODIS, Autel MaxiCOM).
OEM vs. Aftermarket Fuel Pumps
Feature OEM 96344792 Generic Pump
Pressure Consistency ±3% deviation (ECU-compatible) ±15% (triggers limp mode)
Filter Design Multi-stage stainless steel Paper media (clogs in 10k miles)
Wiring Harness Teflon-coated (heat resistant) PVC insulation (melts at 90°C)
Sensor Calibration Pre-set for GM/Ford/Chrysler Requires manual adjustment
Warranty Coverage 3-year, includes labor at dealers 1-year (parts only)
Where to Buy & Avoid
Trusted Suppliers:
GM Parts Direct, Ford Parts Giant, RockAuto (OEM section).
Red Flags:
Pumps sold without factory packaging or QR codes.
Sellers listing "universal fit" for 96344792 (this is model-specific).
Maintenance Tips
Fuel Quality: Use Top Tier gas to prevent injector clogs.
Filter Service: Clean mesh filter every 30k miles.
Winter Care: Keep tank ≥1/2 full to avoid condensation in cold climates.
FAQ
Q: Does 96344792 fit a 2022 Chevy Tahoe with 5.3L?
A: Yes – compatible with all GMT K2XX/T1XX platform vehicles.
Q: Can I use 96344792 in a Ford F-150 if my original was 96391619?
A: Yes – but ensure the fuel line connectors match (quick-connect vs. threaded).
Q: Why does my new pump still throw a P0087 code?
A: Check fuel pressure regulator (part FL820S) or clogged injectors.
Q: Is programming needed after replacement?
A: No – plug-and-play, but gauge calibration is recommended.
Q: Can a bad pump damage the engine?
A: Yes – lean conditions may cause piston/scoring (common in EcoTec3 engines).
Conclusion
The 96344792 Fuel Pump Assembly is the definitive solution for replacing the obsolete 96391619, offering enhanced durability, ethanol compatibility, and precise pressure control. By choosing OEM over generic pumps, you prevent costly repairs like injector replacement or engine damage. Always verify part numbers with your VIN and purchase from authorized dealers to ensure warranty validity.
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