The APR High Pressure Fuel Pump (HPFP) dramatically increases the maximum volume of fuel the HPFP can deliver. In doing so, the direct injection fueling system is capable of satisfying fueling requirements set forth by high horsepower setups. This is accomplished by increasing the displacement of the pump using high quality components to exacting tolerances.

How the direct injection system works:
A low pressure fuel pump (LPFP) in the fuel tank delivers fuel to the high pressure fuel pump (HPFP) at roughly 4 to 6 bar. Fuel pressure is then bumped up to a maximum of 145 bar, depending on factory parts, with the HPFP. Finally, high pressure fuel is delivered to the injectors, which spray directly into the cylinders.

The problem:
The volume of fuel the HPFP pump can displace is directly tied to the displacement of the pump (Internal bore size, and camshaft dictated stroke), and engine speed. The pump is driven off of a camshaft. Even the factory turbocharger is capable of taxing this system, especially in the mid to lower RPM range where fuel volume is lower.

The APR solution:
We dramatically increase the volume of fuel the HPFP can displace at every RPM by increasing the displacement of the HPFP. This is accomplished by increasing the bore diameter of the pump’s internal pressurizing cylinder. It’s important to understand, despite the name, a HPFP upgrade is not necessary designed to increase the engine’s fuel rail pressure. The primary goal is to increase the volume of fuel available, which will keep fuel pressure steady even in the most demanding of situations!

High quality components and extreme tolerances:
The HPFP internals must be machined to extreme tolerances and installed in a clean environment or the pump can easily fail. Dimensional tolerances on the APR HPFP are as tight as .00004″ and geometric tolerances are as tight as .00005″. The plunger and barrel are created from certified and heat-treated bearing-grade stainless steel and the plunger undergoes a special diamond like coating process for exceptional surfaces hardness and ultra-reliable operation. To prevent float associated with altering the plunger’s mass, APR supplies each unit with a properly specified spring. All necessary internal seals are replaced.

Internal testing:
All APR HPFPs are assembled in house under strict assembly guidelines. Each pump is then tested on our test rig to ensure the pumps operate as designed. This step is important for several reasons. It’s critical in determining if a pump has a failure from incorrect install, a leaking seal, or a bad solenoid. Secondly, a seized pump on the vehicle at startup can cause damage to the engine’s camshaft. By testing each pump, we all but eliminate these possibility.

Proven track record:
APR pioneered HPFP upgrades in the early days of VAG direct injection engines. Soon after, APR became an OEM supplier of HPFP and GDI components to VAG for use in various race cars, racing series, project cars, and concept vehicles. The APR HPFP has been at the center of countless motorsport victories across the globe and has operated with a nearly perfect tract record since the program’s motorsport backed inception in 2006. With tens of thousands of pumps sold, APR has a wealth of knowledge, and manufacturing expertise necessary to deliver a product that will and has stood the test of time.

This kit includes a newly rebuilt pump.

This product cannot be shipped to California.

A favorite for sedan and stock car racers, the GP-5W offers a wider eyeport and lightweight construction making for a durable and versatile helmet. Head and Neck Restraint devices with the standard 6mm helmet bolt can be easily added with the new M6 washer nut installed at the factory. The helmet is SA2020 certified. This is the white S version.

ScLc Construction It’s constructed of Arai’s exclusive, very-lightweight ScLc shell technology (Super Complex Laminate Construction), so it maintains a low overall weight to offset the added weight of the larger shield.

Shell Shape It has a smaller, more “natural” head shape, and a lower center of gravity to balance and stabilize the helmet so it feels even lighter, thereby helping to reduce fatigue.

Interior Fit The interior fit is typical Arai, benefitting from over 50 years of research and refinement, and resulting in a helmet that, as mentioned previously, more closely matches the shape of the human head. The first is snug, allowing for the smallest possible helmet to be worn while still being comfortable.

Wider Eyeport Larger 90mm eyeport, top to bottom, than comparable Arai models, provides a better vertical view desired by many sedan drivers. For drivers not needing a shield, a visor peak option is available.

Removable/Replaceable Cheekpads The cheekpads are removable and washable for easier cleaning. More importantly, they’re replaceable with optional sizes of varying thicknesses for a more custom, personalized fit.

VentilationThe upper ventilation system incorporates two large intake ducts and the same two exhaust vent ducts found on the GP-5(PED). This vent system allows for improved air flow even within the confines of a sedan or closed cockpit.

M6 Anchor Type Integrated seats to accommodate a variety of Head and Neck Restraint devices. Pre-Installed M6 threaded washer/nut, with 6mm threads, to accept a variety of anchors systems for variety of Head and Neck Restraint devices and make installation much easier for people not familiar with such installations. Flat surface area around the mounting nut to allow the anchor post base to rest flush with the helmet surface around the entire perimeter of the anchor base. FIA-8859-2015 certification sticker applied to the interior liner material.

Size Guide

OEM-style low-profile 3″ slip clamp.

The APR Axleback Exhaust Conversion is a direct bolt-on to an existing APR Catback Exhaust System and converts your valveless system to the APR Valved System with rear mufflers.

APR Direct Replacement Brake Discs are a plug-and-play upgrade for your factory brakes. They provide reduced brake fade, improved brake consistency, and excellent modulation, especially during repeated consecutive braking applications or spirited driving. The rotors have improved resistance to distortion, warping, and cracking at high temperatures. They pair perfectly with the APR Direct Replacement Advanced Street Pads and provide a no-compromise solution for spirited daily driving.

Replacement rings and hardware for 350x34mm APR Braking Systems.

The APR Carbon Fiber Intake System connects to the factory turbo inlet piping, and provides substantial gains. Those looking to complete the system can opt for this APR Carbon Fiber Turbo Inlet pipe. The turbo inlet pipe is a continuous 80mm pipe that connects to the turbocharger via a port-matching silicone coupler. The PCV system conveniently connects to the intake via a billet aluminum adapter. Lastly, the system uses a flex coupler that allows adequate engine movement and flex

This product cannot be shipped to California.

The APR High Pressure Fuel Pump (HPFP) dramatically increases the maximum volume of fuel the HPFP can deliver. In doing so, the direct injection fueling system is capable of satisfying fueling requirements set forth by high horsepower setups. This is accomplished by increasing the displacement of the pump using high quality components to exacting tolerances.

How the direct injection system works:
A low pressure fuel pump (LPFP) in the fuel tank delivers fuel to the high pressure fuel pump (HPFP) at roughly 4 to 6 bar. Fuel pressure is then bumped up to a maximum of 145 bar, depending on factory parts, with the HPFP. Finally, high pressure fuel is delivered to the injectors, which spray directly into the cylinders.

The problem:
The volume of fuel the HPFP pump can displace is directly tied to the displacement of the pump (Internal bore size, and camshaft dictated stroke), and engine speed. The pump is driven off of a camshaft. Even the factory turbocharger is capable of taxing this system, especially in the mid to lower RPM range where fuel volume is lower.

The APR solution:
We dramatically increase the volume of fuel the HPFP can displace at every RPM by increasing the displacement of the HPFP. This is accomplished by increasing the bore diameter of the pump’s internal pressurizing cylinder. It’s important to understand, despite the name, a HPFP upgrade is not necessary designed to increase the engine’s fuel rail pressure. The primary goal is to increase the volume of fuel available, which will keep fuel pressure steady even in the most demanding of situations!

High quality components and extreme tolerances:
The HPFP internals must be machined to extreme tolerances and installed in a clean environment or the pump can easily fail. Dimensional tolerances on the APR HPFP are as tight as .00004″ and geometric tolerances are as tight as .00005″. The plunger and barrel are created from certified and heat-treated bearing-grade stainless steel and the plunger undergoes a special diamond like coating process for exceptional surfaces hardness and ultra-reliable operation. To prevent float associated with altering the plunger’s mass, APR supplies each unit with a properly specified spring. All necessary internal seals are replaced.

Internal testing:
All APR HPFPs are assembled in house under strict assembly guidelines. Each pump is then tested on our test rig to ensure the pumps operate as designed. This step is important for several reasons. It’s critical in determining if a pump has a failure from incorrect install, a leaking seal, or a bad solenoid. Secondly, a seized pump on the vehicle at startup can cause damage to the engine’s camshaft. By testing each pump, we all but eliminate these possibility.

Proven track record:
APR pioneered HPFP upgrades in the early days of VAG direct injection engines. Soon after, APR became an OEM supplier of HPFP and GDI components to VAG for use in various race cars, racing series, project cars, and concept vehicles. The APR HPFP has been at the center of countless motorsport victories across the globe and has operated with a nearly perfect tract record since the program’s motorsport backed inception in 2006. With tens of thousands of pumps sold, APR has a wealth of knowledge, and manufacturing expertise necessary to deliver a product that will and has stood the test of time.

This is a rebuild of your factory HPFP. Working pumps must be sent to APR.

Pump rebuilds are applicable to the Hitachi Gen III pump found on the 1.4T, 1.8T/2.0T EA888 Gen 1/2, 2.5 TFSI (Gen 1), 3.0T Supercharged, 4.0T V8 (C7/D4), 5.0T V10, and 5.2L FSI V10.

This product cannot be shipped to California.