The ‌31110-2P400 Fuel Pump Assembly‌ is a critical component for maintaining fuel delivery efficiency in ‌Hyundai Santa Fe (2016–2023)‌ and ‌KIA Sorento 3.5L (2017–2024)‌ engines‌. Designed for high-pressure fuel systems, this assembly ensures optimal combustion performance and reliability under diverse driving conditions. Below is a detailed breakdown of its features, compatibility, installation best practices, and SEO strategies to enhance visibility.

Technical Specifications‌
Parameter‌ ‌Details‌
Compatibility‌ Hyundai Santa Fe 3.5L (2016–2023), KIA Sorento 3.5L (2017–2024)‌.
Material‌ Reinforced nylon housing; stainless steel internals‌.
Flow Rate‌ 150–180 liters/hour at 4.5–5.5 bar‌.
Operating Pressure‌ 3.8–5.2 bar (OEM-calibrated)‌.
Voltage‌ 12V system with OEM-grade connectors‌.
Temperature Tolerance‌ -40°C to +120°C (ethanol-resistant seals)‌.
Key Features‌

Precision Fuel Delivery‌

Maintains stable fuel pressure (±2% tolerance) during acceleration or high-load driving‌.
Integrated check valve prevents vapor lock in extreme heat‌.

Durability & Compatibility‌

Tested for ‌2,000+ hours‌ under thermal cycling and ethanol-blend fuel simulations‌.
Compatible with E10–E15 ethanol blends‌.

Diagnostic Integration‌

Supports OBD-II codes (e.g., ‌P0087‌ – low fuel pressure; ‌P0171‌ – lean condition)‌.
Compatibility List‌
Vehicle Model‌ ‌Production Years‌ ‌Engine Code‌
Hyundai Santa Fe 3.5L 2016–2023 G6DC 3.5L V6‌.
KIA Sorento 3.5L 2017–2024 G6DC 3.5L V6‌.

Note‌: Confirm fitment using the vehicle’s VIN or OEM service manuals‌.

Installation Guidelines‌

Pre-Installation Steps‌

Depressurize the fuel system via the Schrader valve on the fuel rail‌.
Disconnect the battery to avoid electrical hazards‌.

Critical Installation Tips‌

Align the fuel pump flange with the tank groove and secure bolts to ‌8–12 Nm‌‌.
Replace the fuel filter and inspect the fuel tank for debris‌.

Post-Installation Checks‌

Prime the pump by cycling the ignition 3–5 times to purge air‌.
Use an OBD-II scanner to clear fault codes and verify pressure readings‌.
Maintenance Best Practices‌
Fuel Filter Replacement‌: Replace every ‌30,000 miles‌ to prevent clogging‌.
Electrical Inspections‌: Check wiring harnesses for corrosion during annual servicing‌.
Software Updates‌: Ensure ECU firmware is updated for optimal fuel trim adjustments‌.
SEO Recommendations‌

Keyword Strategy‌

Primary Keywords‌: “31110-2P400 Fuel Pump Assembly for Hyundai Santa Fe” or “KIA Sorento 3.5L high-pressure fuel pump”‌.
Long-Tail Keywords‌: “Hyundai Santa Fe fuel system upgrade” or “3.5L V6 fuel pump replacement guide”‌.

Content Optimization‌

Use structured data markup (Product, AutoPart) to enhance search visibility‌.
Embed high-resolution images with ALT tags (e.g., “Hyundai Santa Fe fuel pump installation diagram”)‌.

Multilingual Support‌

Translate key sections into Spanish or Korean for global audiences‌.

Content Updates‌

Refresh articles annually with expanded compatibility data or diagnostic tips‌.

This guide combines technical accuracy with SEO best practices, empowering automotive professionals and enthusiasts to optimize fuel system performance and online reach‌.