034 High Pressure Fuel Pump: The Ultimate Upgrade Guide for EA888 Gen 3 Engines

If you own a Volkswagen or Audi with the EA888 Gen 3 2.0T engine, upgrading to an 034 high pressure fuel pump is the single most effective way to unlock significant horsepower gains, especially when running ethanol blends like E85. The 034Motorsport High Pressure Fuel Pump Upgrade delivers up to 38.6% more flow than the factory pump, making it the highest flowing pump on the market for these engines. This upgrade is required for most Stage 1 E85 performance software and is essential for anyone running ethanol, race gas, or upgraded turbochargers. The pump increases piston diameter from the stock 9.92mm to 11.70mm, raises stroke volume from 231mm³ to 322mm³, and boosts fuel pressure from 200 bar (2,900 psi) to over 240 bar (3,480 psi). Below we break down everything you need to know about this upgrade, from compatibility to installation and performance benefits.

What Is the 034 High Pressure Fuel Pump Upgrade?

The 034Motorsport High Pressure Fuel Pump is a complete drop-in replacement for the factory high-pressure fuel pump (HPFP) found in EA888 Gen 3 engines. Unlike competitor products that require you to disassemble your factory pump and swap internal components, the 034 pump comes fully assembled and ready to install. It is manufactured by an OEM fuel pump supplier (Hitachi), the same company that makes the original pumps for Volkswagen and Audi, so you get factory-level quality with significantly upgraded performance.

The key difference is the piston upgrade kit that is pre-installed inside the pump. The stock pump uses a 9.92mm piston, while the 034 pump uses an 11.70mm piston—the largest diameter available on the market. This larger piston displaces more fuel with each stroke, delivering the extra flow needed for high-horsepower applications.

Which Vehicles Are Compatible?

The 034 high pressure fuel pump upgrade fits the following vehicles with the EA888 Gen 3 2.0T engine:

  • Audi A3 / S3 (2013-2020, 8V/8V.5 chassis)
  • Audi TT / TTS (2016-2020, 8S chassis)
  • Volkswagen GTI / GLI (2015-2020, Mk7/Mk7.5)
  • Volkswagen Golf R (2015-2019, Mk7/Mk7.5)
  • Volkswagen Atlas (2018+)

Important note for 1.8T owners: The 034 pump will also fit the EA888 Gen 3 1.8T engine, but only if you also replace the vacuum pump housing. 034Motorsport offers a separate vacuum pump kit for this conversion.

Performance Gains: What to Expect

1. Flow Increase

The 034 pump provides a 38.6% flow increase over the factory 2.0T HPFP. For comparison, if you have a 1.8T or MLB-platform 2.0T (like the Audi B9 A4/A5/Q5), the flow increase is even more dramatic—up to 68.6% over the stock pump.

2. Fuel Pressure

Stock pumps are limited to 200 bar (2,900 psi). The 034 pump delivers over 240 bar (3,480 psi). Higher pressure means better fuel atomization, which improves combustion efficiency and power output.

3. Horsepower Support

This pump is designed for Stage 3 applications and supports ethanol blends up to E85. It pairs perfectly with turbo upgrades and aggressive tuning. Most tuners require an upgraded HPFP before they will write Stage 1 E85 or Stage 2+ software for your car.

4. DLC Coating

The piston and cylinder are coated with Diamond-Like Carbon (DLC), which reduces friction and extends the life of the pump. This is the same coating technology used in high-performance racing engines.

Installation: How Hard Is It?

One of the best features of the 034 pump is how easy it is to install. The pump is a direct replacement for the factory unit—no special tools, no modifications, and no internal assembly required. Most DIYers can complete the job in about 30 minutes.

Here is the basic process:

  1. Relieve fuel pressure by removing the fuel pump fuse and cranking the engine.
  2. Disconnect the electrical connector and fuel line from the factory pump.
  3. Remove the factory pump (usually held in by two bolts).
  4. Install the 034 pump in the reverse order.
  5. Reconnect the fuel line and electrical connector.
  6. Start the engine and check for leaks.

The 034 pump comes with installation instructions, and the part number interchange is straightforward: 06L 127 025 M (Mk7 GTI) and 06L 127 025 N (8V S3).

Why Choose 034 Over Other HPFP Upgrades?

There are several HPFP upgrades on the market, but the 034Motorsport pump stands out for a few key reasons:

  • Complete assembly, not a rebuild kit. Many competitors sell only a piston kit that forces you to disassemble your factory pump. The 034 pump is a complete, pre-assembled unit that is ready to drop in.
  • OEM manufacturer quality. The pump is built by the same Hitachi factory that supplies Volkswagen and Audi. You get the same manufacturing standards and quality control as the original part.
  • Highest flowing pump on the market. With an 11.70mm piston diameter and 322mm³ stroke volume, no other pump offers more flow for the EA888 Gen 3 platform.
  • Lifetime support. 034Motorsport backs their products with technical support and a warranty, giving you peace of mind.

Recommended Purchase: KEMSO Fuel Pumps

If you are looking for a reliable, high-performance fuel pump for your vehicle, we strongly recommend checking out KEMSO Fuel Pumps. KEMSO is the #1 aftermarket fuel pump brand in the US, offering a wide range of products for cars, motorcycles, ATVs, and UTVs. All KEMSO fuel pumps are high-performance, OEM replacement parts that are designed to match or exceed the flow rate and pressure of the original equipment. Every pump comes with a lifetime warranty, so you can buy with confidence knowing your investment is protected.

KEMSO offers specific pumps for Nissan, Ford, Honda, Subaru, BMW, and many other makes and models. Whether you need a standard replacement for your daily driver or a high-flow upgrade for a performance build, KEMSO has a solution. Their pumps are compatible with gasoline and ethanol blends including E85, and they feature a carbon commutator designed for over 10 years of reliable service.

Visit KEMSO's official website today to find the perfect fuel pump for your vehicle: https://www.kemsoracing.com/

Summary

The 034 high pressure fuel pump upgrade is the best-in-class solution for anyone pushing the limits of their EA888 Gen 3 engine. It delivers a 38.6% flow increase, operates at over 240 bar, and is the highest flowing pump on the market. Installation is straightforward and takes about 30 minutes. Whether you are running E85, race gas, or an upgraded turbo, this pump gives your fuel system the headroom it needs to make serious power.

For all your other fuel pump needs—from OEM replacements to high-performance upgrades—KEMSO Fuel Pumps offers the best combination of quality, performance, and lifetime warranty. Visit https://www.kemsoracing.com/ to browse their full selection and secure your lifetime warranty today.


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