Ensure reliable fuel delivery and engine performance with the ‌OEM 31110-1G500 Fuel Pump Assembly‌, engineered as a direct replacement for the discontinued ‌E8730M‌ part. This guide covers compatibility, installation steps, and why choosing genuine Hyundai/Kia components prevents fuel system failures in popular SUVs and sedans.

Product Overview & Key Features‌
31110-1G500 Fuel Pump Assembly‌
Function‌: High-pressure fuel delivery system with integrated fuel level sensor, filter, and pump motor.
Replaces‌:
E8730M‌ (obsolete), ‌31110-2G000‌, ‌31110-2G500‌ (cross-references).
Compatibility‌:
Hyundai Vehicles‌:
Santa Fe: 2016–2022 – 2.4L GDI, 3.3L Lambda II.
Tucson: 2017–2023 – 1.6L Turbo, 2.0L Nu MPi.
Sonata: 2015–2023 – 2.4L/2.0L Theta II.
Kia Vehicles‌:
Sorento: 2015–2023 – 2.4L GDI, 3.5L V6.
Sportage: 2016–2023 – 2.4L/1.6L Turbo.
Optima: 2015–2023 – 2.0L Nu MPi.
Technical Specs‌:
Pressure Rating‌: 60–85 PSI (ECU-regulated).
Flow Rate‌: 220 LPH (liters per hour).
Material‌: Nylon housing with ethanol-resistant seals (E15/E85 compatible).
Wiring‌: Teflon-coated harness (heat-resistant up to 150°C).
Warranty‌: 3-year/unlimited mileage (Hyundai/Kia-certified).
Why Replace E8730M with 31110-1G500?‌
Issue with E8730M‌ ‌31110-1G500 Improvement‌
Worn Impeller‌: Cavitation due to plastic fatigue Reinforced nylon impeller (30% thicker)
Sensor Drift‌: Fuel gauge inaccuracies Hall-effect sensor (±3% tolerance)
Ethanol Degradation‌: Seal leaks Viton seals (E85-compatible)
Filter Clogs‌: Paper media fails Dual-stage stainless steel mesh filter
Symptoms of a Failing Fuel Pump (E8730M/31110-1G500)‌

Replace immediately if experiencing:

Hard Starting‌: Extended cranking (code ‌P0087‌ for low fuel pressure).
Engine Stalling‌: Sudden power loss under load (codes ‌P0171/P0191‌).
Whining Noise‌: High-pitched sound from the fuel tank (worn pump bearings).
Fuel Gauge Errors‌: Inconsistent readings (e.g., full tank shows half).
Reduced MPG‌: Poor fuel efficiency due to inconsistent pressure.
Installation Guide‌

Tools Needed‌: Fuel line disconnect tool, Torx T25, scan tool (for calibration), safety gloves.

Steps‌:

Depressurize the Fuel System‌:
Remove the fuel pump fuse/relay; start the engine until it stalls.
Access the Fuel Pump‌:
Remove rear seat cushion and unbolt the access panel.
Disconnect Components‌:
Unplug the electrical connector and release quick-connect fuel lines.
Remove Old Pump Assembly‌:
Twist the locking ring counterclockwise; carefully lift out the pump.
Install 31110-1G500‌:
Transfer the fuel level float (if needed); secure the new pump with the OEM ring.
Reconnect & Test‌:
Prime the system (turn ignition ON 3x); check for leaks and calibrate the fuel gauge.

Pro Tips‌:

Replace the fuel filter sock (included with 31110-1G500) to prevent debris ingestion.
Reset fuel trims using an OBD-II scanner (e.g., Hyundai GDS, Autel MaxiCOM).
OEM vs. Aftermarket Fuel Pumps‌
Feature‌ ‌OEM 31110-1G500‌ ‌Generic Pump‌
Pressure Accuracy‌ ±5% (ECU-optimized) ±20% (risks lean/rich conditions)
Filter Design‌ Dual-stage stainless steel Single-layer mesh (clogs faster)
Seal Material‌ Viton (ethanol-resistant) Buna-N (swells with E15+)
Wiring Harness‌ Teflon-coated (prevents shorts) PVC insulation (cracks at 90°C)
Warranty Coverage‌ 3-year, includes labor at dealers 1-year (parts only)
Where to Buy & Red Flags‌
Trusted Suppliers‌:
HyundaiPartsDeal, KiaPartsNow, Genuine Hyundai/Kia dealers.
Avoid‌:
Parts sold without Hyundai/Kia packaging or authentication labels.
Sellers claiming "universal fit" for 31110-1G500 (model-specific design).
Maintenance Tips‌
Fuel Quality‌: Use Top Tier gasoline to minimize injector clogs.
Filter Service‌: Inspect the filter sock every 30,000 miles.
Winter Care‌: Keep the tank ≥½ full to prevent condensation in cold climates.
Diagnostics‌: Scan for fuel pressure codes biannually.
FAQ‌

Q: Does 31110-1G500 fit a 2020 Hyundai Santa Fe with a 2.4L engine?‌
A: Yes – compatible with all 2015–2023 Santa Fe models.

Q: Can I use this pump if my original part was E8730M?‌
A: Yes – 31110-1G500 is the direct OEM replacement.

Q: Why does my new pump still trigger a P0087 code?‌
A: Check the fuel pressure regulator or clogged in-tank filter.

Q: Is programming required after installation?‌
A: No – plug-and-play, but gauge calibration is recommended.

Q: Can a failing pump damage the engine?‌
A: Yes – prolonged lean conditions may cause piston ring wear.

Conclusion‌

The ‌31110-1G500 Fuel Pump Assembly‌ is the definitive solution for replacing the obsolete ‌E8730M‌, offering enhanced durability, ethanol compatibility, and precise fuel delivery. By choosing OEM over generic pumps, you ensure seamless integration with your Hyundai or Kia’s ECU and avoid costly repairs like injector replacement or engine damage. Always verify part numbers using your VIN and purchase from authorized dealers for warranty validity.

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