High Pressure Fuel Pump 12V for GDI Optima Sonata

High pressure fuel pump replacement restores stable GDI fuel delivery for smoother starts, consistent acceleration, and fewer fuel-system hiccups. Built to meet OE-standard fit and function, it’s engineered for reliable pressure, efficient atomization, and quiet operation. Designed for select Kia and Hyundai Theta II GDI applications, this stainless-steel pump installs as a direct-fit match to help reduce leaks, misfires, and performance drop caused by a worn fuel pump.

• Fits select Kia/Hyundai GDI Theta II vehicles; match your model/year and OE reference numbers before purchase


• Delivers 50–80 L/h flow at 0.5 MPa to support stable pressure and efficient fuel atomization


• Reduces noise with ≤48 dB operation for smoother, quieter driving


• Resists wear and corrosion with 430 stainless steel for long service life in high-heat engine bays


• Ensures a secure seal with OEM-matched inlet/outlet valve sizing to help prevent leaks and pressure loss

When a high-pressure pump weakens, GDI engines can struggle with hard starts, hesitation, and inconsistent power. This direct-fit replacement is built for dependable pressure control and stable fuel delivery, helping your engine run as intended under daily driving loads. Confirm compatibility with your vehicle details and reference OE numbers 35320-2G720 / 35320-2G740 for the correct match. Grab yours today to restore confidence in your fuel system before minor symptoms turn into downtime.

• Material: 430 stainless steel


• Voltage: DC 12V


• Operating current: ≤0.8A


• Flow rate: 50–80 L/h @ 0.5 MPa


• Noise level: ≤48 dB


• Dimensions: 5.31 x 3.35 x 3.74 in (135 x 85 x 95 mm)


• Net weight: 1.7 lb (0.77 kg)


• OE reference numbers: 35320-2G720, 35320-2G740


• Item model: HP121