For automotive professionals, mechanics, and parts distributors, the 31110-2W950 Fuel Pump Assembly is a critical OEM-compliant replacement component designed to restore fuel delivery efficiency and reliability in modern vehicles. This SEO-optimized guide combines technical specifications, compatibility insights, and installation protocols tailored for models like the Hyundai Santa Fe III (2012–2018) and other cross-compatible platforms. 

Product Overview 

The 31110-2W950 Fuel Pump Assembly is a direct replacement for the original 311102W950 unit, engineered to meet or exceed OEM performance standards. Key features include: 
Material: High-strength stainless steel housing with Viton seals, resistant to ethanol-blended fuels (E10–E85) and corrosion. 

Design: 

Integrated Fuel Filter: Captures particles as small as 10µm, ensuring clean fuel delivery to injectors. 

Pressure Regulation: Maintains a stable 3.5–4.0 bar (50–58 psi) for optimal combustion. 

Electric Motor: 12V/24V DC operation with a flow rate of 8–12 L/min, compatible with modern CAN-bus systems. 

Certifications: ISO 9001, IATF 16949, and RoHS compliant. 

Technical Specifications 

Parameter          31110-2W950
OEM Cross-Reference Replaces 311102W950, 1001-A635550, and 31110-1W100
Voltage 12V DC (compatible with 24V systems)
Flow Rate 8–12 L/min
Operating Temperature -40°C to 120°C
Warranty 12 months / 100,000 km
 

Compatibility & Applications 

Primary Models: 

Hyundai Santa Fe III (2012–2018): Compatible with 2.4L GDI and 2.0L turbocharged diesel engines. 

Kia Sportage (2016–2020): Supports gasoline variants with multi-port fuel injection systems. 

Cross-Platform Use: 

Hyundai Tucson (2015–2020): Shares fuel system architecture with Santa Fe III. 

Aftermarket Applications: Adaptable to custom builds requiring OEM-grade fuel delivery. 

Performance Advantages 

Enhanced Fuel Efficiency: 

Precision pressure regulation reduces fuel waste by 5–8%, aligning with Euro 6d emissions standards. 
Durability: 

Corrosion-resistant coatings and reinforced bushings extend lifespan to 150,000+ km in humid or high-salt environments. 
Diagnostic Integration: 

Detects faults like P0087 (low fuel pressure) and P0190 (fuel rail sensor malfunction) via OBD-II scanners. 
Noise Reduction: 

PTFE-coated internals lower operational noise to <65 dB, ideal for passenger vehicles. 

Installation & Maintenance 

Tools Required: 
Torque wrench (10–15 Nm), fuel line disconnect tool, OBD-II scanner. 

Steps: 
Depressurize the Fuel System: 

Disconnect the battery and relieve fuel pressure using the OBD-II scanner. 
Pump Replacement: 

Remove the rear seat or access panel to reach the fuel tank. 

Disconnect electrical connectors and fuel lines, then unscrew the locking ring counterclockwise. 

Install the 31110-2W950 assembly, ensuring the seal is properly seated, and tighten the locking ring to 40–50 Nm. 
Post-Installation Checks: 

Reconnect the battery, prime the fuel system, and test for leaks. Clear fault codes and perform a road test. 

Maintenance Tips: 
Filter Replacement: Replace the integrated filter every 50,000 km. 

Failure Symptoms: 

Engine Stalling: Caused by low fuel pressure or clogged filters. 

Whining Noises: Indicates a failing electric motor. 

SEO-Optimized Keywords 

OEM 31110-2W950 Fuel Pump Assembly for Hyundai Santa Fe III 2.4L GDI 

Direct Replacement 311102W950 Fuel Pump ISO 9001 Certified 

How to Fix P0087 Codes with 31110-2W950 Installation 

High-Flow 12L/min Fuel Pump for Kia Sportage Gasoline Engines 

Ethanol-Resistant 31110-2W950 Maintenance Guide 

Conclusion 
The 31110-2W950 Fuel Pump Assembly is a reliable, OEM-grade solution for restoring fuel system performance in Hyundai, Kia, and compatible vehicles. With certifications like IATF 16949 and cross-platform adaptability, it addresses common issues like pressure loss and premature wear. Trusted suppliers like Guangzhou Jiahua Auto Parts Co., Ltd. (MOQ: 50 units) offer bulk pricing and VIN-specific compatibility verification. For technical support, consult Hyundai/Kia diagnostic tools (e.g., GDS) or authorized distributors. 

References 
OEM cross-references, material certifications, and compatibility details. 

Pressure regulation, flow rate, and noise reduction features. 

Installation tools, torque specifications, and diagnostic protocols. 

Common failure symptoms and diagnostic codes.