IE HPFP Internal Upgrade Kit For Audi B9 S4/S5, SQ5 3.0T & /RS4RS5 2.9T
SKU: 28243545100

IE HPFP Internal Upgrade Kit For Audi B9 S4/S5, SQ5 3.0T & /RS4RS5 2.9T

Sale price$245.70 Regular price$273.00
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Description

IE HPFP Internal Upgrade Kit For Audi B9 S4/S5, SQ5 3.0T & /RS4RS5 2.9TThe IE HPFP Internal Kit upgrades the high pressure fuel pump in your Audi B9 3. 0T or 2. 9T engine with the largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and our Stage 1 2 Plus ECU tunes. Manufactured with top quality components and an industry leading QC process to ensure extreme reliability. Increase your fuelling overhead and enjoy worry free HPFP operation for your 6 cylinder turbocharged engine.

 

The IE HPFP Internal Kit upgrades the high pressure fuel pump in your Audi B9 3.0T or 2.9T engine with the largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and our Stage 1/2 Plus ECU tunes. Manufactured with top-quality components and an industry-leading QC process to ensure extreme reliability. Increase your fuelling overhead and enjoy worry-free HPFP operation for your 6-cylinder turbocharged engine.

REQUIRED FLOW FOR
E85 & HYBRID

ECU TUNES

STROKE VOLUME
38.58%

INCREASE OVER STOCK

LARGEST POSSIBLE
11.68MM

PISTON DIAMETER

LEADING FEATURES

  • Highest possible flow -safely run ethanol & hybrid turbo ECU tunes
  • In-house verified -Broken-in and bench tested on our pump dyno
  • Tool steel pin & cylinder -Extreme resistance to heat and abrasion
  • DLC-coated pin -Low friction long-life coating
  • Nitrided cylinder -Increases hardness and wear resistance
  • Titanium retainer -Ultra lightweight and high strength
  • Engineered, designed, & manufactured in the USA

ADDED DISPLACEMENT

Your HPFP is an integral part of the B9 3.0T & 2.9T platforms direct injection (DI) system and provides exceptionally high-pressure fuel (exceeding 2900psi) to the injectors. When running turbo upgrades or ethanol fuel, the stock HPFP internal volume becomes the limiting factor when increasing power. IE's HPFP internals install into your factory pump housing and increase the bore and piston size of the pump internals, adding more flow, delivering more fuel, and safely allowing for higher horsepower & torque output.

FLOW TESTING

IE HPFP Upgrade Internals offer the largest possible size within the B9 V6 pump body. The factory-installed 9.92mm internal pin has been enlarged to 11.68mm, increasing the stroke volume from 448mm^3 to 621mm^3. The result is a maximum gain of 38.58% more flow over stock!

CUTTING-EDGE RELIABILITY

Every piston and cylinder is CNC machined to exacting sizes, assembled, and measured as a matching set in-house. Tolerances are hand-verified using specialized measurement tools and verified down to 0.00005 of an inch to ensure reliability and proper function. These extreme manufacturing and QC processes have built IE's leading reputation in HPFP reliability and cemented our HPFP designs as the popular choice for those requiring a worry-free operation.

PUMP DYNO VERIFICATION

IE HPFP designs are verified and torture-tested on our fuel pump dyno. This machine can replicate countless miles and various RPM situations to substantiate every detail of the HPFP design. This strict engineering process, combined with our 100% in-house CNC machining, obsessed quality control, and top-shelf components, is why IE HPFP Kits have earned their reputation for reliability.


INCLUDED LIMITED WARRANTY

Due to the extreme machining and coating tolerances, Integrated Engineering is proud to offer a limited warranty on this product:
Unlimited miles for six months from the day of purchase

DLC COATED

DLC (diamond-like carbon coating) is an advanced coating process applied to the tool steel pin. This coating reduces friction by combining increased hardness with low coefficient properties to providing excellent wear and a self-lubricating behaviour that drastically extends pin life.

TITANIUM RETAINER

Our ultra-lightweight FEA-optimized titanium retainer reduces the chance of valve float while securing the factory spring to the new IE pump assembly. The internal kit is designed correctly for the factory spring rate, avoiding the need for a stiffer spring that adds unnecessary pressure and wear on the camshaft.

NITRIDED CYLINDER

The HPFP cylinder is tortured with up to10,500 strokes per minute with an extremely narrow tolerance and lubricated solely by fuel. To ensure durability, we have manufactured a tool steel cylinder featuring an advanced nitriding finish. This procedure infuses nitrogen atoms into the material's outer surface, greatly enhancing the surface hardness and wear resistance. Each nitride cylinder is independently verified for thickness and quality in a specialized laboratory.


INSTALL TOOL

Disassembly & assembly of the factory HPFP housing requires a specialty tool to thread the assembly housing into the pump body. We have designed and manufactured ours to fit directly to 1/2" drive sockets and torque wrenches. This offers better leverage for unthreading the body and reliable torque spec to complete the installation process without any hassles, making the job easy.

HPFP Socket Tool sold separately

INSTALLATION

Installing your new HPFP kit is straightforward with the correct tools and does not require any permanent modifications. Involves fuel lines and special care to avoid contamination in a clean environment; experienced or professional installation is highly recommended.

Install time around 2-3 hours

FITMENT GUIDE

MAKE MODEL YEAR ENGINE

Audi

S4

2017-2021 (B9)

3.0T

Audi

S5

2017-2021 (B9)

3.0T

Audi

SQ5

2018-2023 (B9/B9.5)

3.0T

Audi

RS5+RS4

2018-2023 (B9/B9.5)

2.9T

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 28243545100

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Erin Mckenzie
New York, US
★★★★★ 5
Works great!
Style: with Pre-Filter
I bought this set to put on my original euphy robot vacuum. It works perfect! All pieces fit perfectly and were so easy to change out. I’ve had the new parts installed for a few weeks and it works so much better now. I recommend them for sure if you need any new parts for yours!
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Reviewed in the United States on May 20, 2026
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Larry Daily
Lexington, US
★★★★★ 5
Perfect Fit
Style: with Pre-Filter
These parts fit our vacuum perfectly and gave us replacements for almost everything. Quick shipping.
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Reviewed in the United States on May 4, 2026
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Verified Purchase
Jeremy
Cuba, US
★★★★★ 5
Best parts for the price
Style: with Pre-Filter
Just what I needed to get my vacuum back up and running.
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Reviewed in the United States on May 9, 2026
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Randall Reviews
Alexandria, US
★★★★★ 4
Very good Value for replacement part and reliable
Style: with Pre-Filter
Very good product for the price - the front brushes wear fast compared to the original Eufy’s but for the value you do get a lot of product. So only 4 stars but just for the brushes “appearing to not last as long and bend but the buy is worth the extras. The filters look and work identical to the OEM. Good stuff - thanks!
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Reviewed in the United States on December 25, 2025
E
Verified Purchase
Eduardo
San Leandro, US
★★★★★ 5
Perfect fit, 11s running like new!
Style: with Pre-Filter
All parts fit perfectly. My vacuum lasts about 20 min longer since the filter isn’t clogging it. Also, replacing the spinning brush quieted it down significantly, it sounds like new again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026

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