Audi Direct Injection High Pressure Fuel Pump - Hitachi HPP0029

Product Information

A direct injection high pressure fuel pump (HPFP) is a critical component in modern gasoline direct injection (GDI) engines. Unlike traditional fuel pumps, it boosts fuel pressure to extremely high levels (often over 2,000 psi) so fuel can be directly injected into the combustion chamber. This enables better fuel atomization, improved efficiency, and higher power output. The HPFP is typically driven by the camshaft and works in tandem with a low-pressure fuel pump. Over time, wear, contamination, or internal failure can lead to drivability issues.

• Engine performance problems – hard starting, hesitation, misfires, or loss of power under load.
• Fuel-related issues – check engine light, lean/rich codes, or reduced fuel economy.
• Noises or leaks – ticking/whining sounds from the pump or visible fuel leakage at the pump area.

About Hitachi

As a Tier 1 supplier to some of the world’s greatest automotive brands, Hitachi provides a range of electromechanical and electronic auto parts for OEMs (Original Equipment Manufacturer), and they manufacture their aftermarket parts to OEM specifications as well. Hitachi manufactures its products in three ISO/TS 16949 certified plants in the United States.

Drive control systems, rotating electrical components, Tokico branded performance shocks, and engine management systems are among the items that Hitachi manufactures to OEM specifications. Since Hitachi manufactures many of the same items for the OEMs, you can be certain of the quality, fit and performance when you buy Hitachi aftermarket products.