SKU: 25511011295

Nostrum 4.0T Audi Upgraded High Pressure Fuel Pump Kit

$45701.10 $50779.00
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Nostrum 4.0T Audi Upgraded High Pressure Fuel Pump KitWhat sets Nostrum apart: Upgraded HPFPs using all new Hitachi pump cores Every pump is serialized and coded, then flow tested in house at multiple vehicle relevant speed &fuel pressure points Direct fitment with no adaptors, comprehensive kit with everything required for an easy high quality installation Detailed installation instructions Detailed tuning guide What comes in the box: Two Upgraded High Flow High Pressure Fuel Pumps Fuel Line Re Route

What sets Nostrum apart:

  • Upgraded HPFPs using all-new Hitachi pump cores  
  • Every pump is serialized and coded, then flow tested in house at multiple vehicle relevant speed &fuel pressure points 
  • Direct fitment with no adaptors, comprehensive kit with everything required for an easy high-quality installation
  • Detailed installation instructions  
  • Detailed tuning guide 

What comes in the box:

  • Two Upgraded High Flow High Pressure Fuel Pumps 
  • Fuel Line Re Route Kit with abrasion resistant sleeving and clips (RS7 and S6/S7 variants)
  • Low pressure inlet fitting plug for passenger side HPFP
  • Flex Fuel Sensor Kit with mounting bracket, hardware, and low-pressure line adapter
  • Plug and Play wire harness for DS1
  • All Installation Hardware 
  • Installation Instructions

 

A comprehensive and complete fueling upgrade, with all the hardware and high-quality parts needed for a fast and effective installation. Provides a 33% displacement increase over stock fuel system, improved bank to bank flow delivery with our fuel line rerouting kit, and full ethanol compatibility. 

Professionally assembled using all new parts, Nostrum pumps are 100% tested for leaks and dynamically tested at engine relevant rpms and target pressures to assure quality & performance. This kit upgrade with Dyno Spectrum tuning is capable of an amazing 666 ft-lbs of torque at just 3500rpm!!!! (as demonstrated on NHP's stock RS7 development vehicle).

This complete kit includes pre-assembled low pressure fuel lines to eliminate the low pressure restriction in the factory fuel system. These lines also include abrasion sleeves, clips, and hardware for a high quality & durable installation. An ethanol sensor is pre-mounted on the stainless steel bracket for easy installation. Two different fuel line options are provided for integration between the vehicle fuel line and the ethanol sensor - one for RS7 and one for S6/S7 (see instructions). The highly detailed wire harness provides OEM grade solution to integrate the E85 sensor directly to the vehcile and integrate with the DS1 module at the OBD port. This is truly the only complete kit on the market with everything you need for a high quality, robust, effective solution for your E85 conversion! 

Nostrum backs every part we sell with a limited lifetime warranty. All Nostrum products come complete with everything you need inside the box, including detailed installation instructions. Tuning guides are also available for your dealer or tuner. We have customer service and calibration engineers on staff to provide you with any support that you may need, from installation to tuning. 

Vehicle Applications:

  • Audi RS7 2014-2018 
  • Audi RS6 2013-2018 
  • Audi S7 2013-2018 
  • Audi S6 2012-2018 

Features

  • WHP Potential on Gasoline: 950 WHP
  • WHP Potential on E85: 750 WHP
  • Tune Requirement: Yes
  • Recommended Tuning Suite: Dyno Spectrum (Preferred), HP Tuners** (**with modified XDF file)
  • Displacement Increase Over Stock: 33%
  • Geometric displacement: 1.56 cc/rev per pump
  • Max Operating Pressure: 20% higher than stock (16.5MPa, 165bar, ~2393psi)
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: 25511011295

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4.7 ★★★★★
Based on 13 reviews
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Product Reviews
B
Boer
Pawtucket, US
★★★★★ 5
Quick and easy to install
This review is for the INFISTAR AC85111 Cabin Air Filter. To be honest, when I saw this product I was a bit perplexed as to whether our car (Honda Odyssey) even had one! I have never replaced a cabin air filter on any car before. The mechanics might have done so during regular service, but I was not aware of it and had to do an internet search to find out where it would even be installed. Just because of my ignorance, I decided to get it and educate myself. My car actually DID have one and installation would have been a quick and easy job if I remembered to take all the heavy stuff (manuals, etc.) out of the glove box. Because I did not do it, it unhooked it on the right and I had quite a bit of trouble realigning it. If it hadn't been for that, installation would have only take a couple of minutes as it was a breeze. The new filter looks like a good quality product and will last a while. Jury is still out for me on the color though. The old filter was white, so it was easy to see the dirt it trapped. This new filter is almost dirt color which would make it harder to see how dirty it is. However, at such an affordable price, I can replace it as often as I want. I asked my mechanic about it and he said he only replaces cabin air filters if the customer requests it or if he notices a funny odor in the car.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
D
Deval
Boise, US
★★★★★ 5
Effective Cabin Air Filter – Fresh and Clean Air for My Car
I recently replaced my car’s cabin air filter with the AC85111 activated carbon filter, and I’ve noticed a clear improvement in air quality inside the vehicle. It helps keep the cabin air fresh, especially during daily commutes and long drives. The activated carbon layer does a good job of reducing dust, odors, and outside pollution, making the driving experience more comfortable. I also noticed less smell from traffic fumes and general road dust entering the car. The fit was perfect for my Honda Pilot, and installation was simple without needing any special tools. It is compatible with several Honda and Acura models, which makes it a reliable replacement option. The material feels well-made and sturdy enough for regular use, ensuring consistent airflow while filtering out impurities effectively. Considering its performance and durability, it also offers good value for money. Overall, this is a practical, easy-to-install, and reliable cabin air filter that helps maintain cleaner and fresher air inside the car.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
T
TJ
Belleville, US
★★★★★ 5
Good fit for our Honda Accord, quality filter
This was the perfect fit for my daughter's Honda Accord. It's a solid, budget‑friendly upgrade that fits perfectly. It only took a few minutes to install. The pleated material feels sturdy, and the activated carbon layer helps cut down on odors and everyday cabin dust.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
Z
Zack
Los Angeles, US
★★★★★ 5
No more funky smell!
Have had a funky smell for a while in my car. Air fresheners just couldn't quite cover it up. I pulled the old filter out which was reallll caked up with stuff and got the new one in. Not only is the funky smell finally gone, but the HVAC is a lot quieter when on full blast, and it blows the air harder. It fit great, installation was easy, and having the smell gone makes it worth absolutely every penny.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
D
Verified Purchase
Devlin
Whiting, US
★★★★★ 5
happy engine. good mileage
Color: CA9683
Fit my 05 Tacoma great! Have had good response with the engine and it's acceleration. Fuel mileage is back on par. Will buy again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 18, 2025

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