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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
For Your Every Summer RSVP, with Code: SUMMER15
Description
APR High Pressure Fuel Pumps - B7 RS4The 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
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 136 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. Upgraded supercharger and turbocharger systems are 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 internal seals are replaced, including the spring seal, and the tip of the pump retains the factory pivoting head to reduce cam follower wear and piston side loading.
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 included two new rebuilt pumps.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.7 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Cute
Cute bag for my dog
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Every Glamorous Pup Needs Pawfum
Color: Black Noir Pawfum, Size: One Size, Color: Black Noir Pawfum, Size: One Size
As a sophisticated young lady with impeccable taste, I can confidently say that the Chewnel Noir Pawfum is a must-have for every fashionable pup.
The moment I got my paws on it, I knew it was special. It’s soft, adorable, and the perfect size for carrying around the house, chewing, cuddling, and showing off during my puppy playdates. It adds just the right amount of luxury to my toy collection.
Not only does it look fabulous in photos, but it also keeps me entertained for hours. My humans can’t stop laughing every time they see me strutting around with my designer “pawfum.”
If you’re a puppy who loves the finer things in life, this toy deserves a spot in your collection.
Five paws from Pennie Lou! Because every glamorous girl needs her signature scent.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Nice dig you
Color: Black Noir Pawfum, Size: One Size
So cute and my yorkies love it
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Super cute and great quality!
Super cute!!! Of course I bought it and my pug had zero interest in it, but it would be perfect for a bougie photo shoot
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Reviewed in the United States on February 20, 2026
★★★★★ 4
Will probably be destroyed soon, but SUPER CUTE!
Color: Pink Purse, Size: One Size
Super cute! It will probably eventually be ripped to shreds by my pups soon because it is not as sturdy as other toys out there. It is also pretty small so not the best for large dogs destructive dogs. My lab tries to eat it and rip it but my small chihuahua plays with it and fetches it (she also looks adorable holding it her mouth!!)
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Reviewed in the United States on January 5, 2017