APR High Pressure Fuel Pump - Audi S5 4.2FSI

£2,411.35
£2,411.35

APR High Pressure Fuel Pump for the 4.2 V8 FSI engine.
These are a requirement when doing a Stage 3+ Supercharger or Turbo conversion on the 4.2 V8 FSI engines.

- OUTRIGHT PURCHASE
This brand new fuel pump does not require any return for your old unit.

APR is pleased to present the high pressure fuel pump upgrades for the 4.2L FSI V8.

APR is a Tier-One OEM supplier of high pressure fueling components to VAG and has operated with a nearly perfect tract record since the program's motorsport backed inception in 2006. With thousands of pumps sold yearly, APR has a wealth of knowledge and manufacturing techniques utilized in the production of critical fueling components with exceptional reliability.

In the early 2000's, VAG began supplying engines with a new direct injection technology known as FSI. Unlike conventional engines of the past, fuel is sprayed directly into the cylinders under extreme pressure resulting in increased power with lower consumption rates and fewer emissions. The technology has spread across VAG's entire lineup of modern gasoline engines and is present in the 4.2L FSI V8.

The engine's fueling system operates to a maximum of 1,973 psi (136 bar) of pressure to correctly spray and atomize fuel directly into the engine's cylinders. This is contrast to multi port injection vehicles of the past which typically operated around 40-60 PSI and were driven off of a low pressure fuel pump. To generate these enormous pressures, the 4.2L FSI V8's variable low pressure fuel pump supplies fuel to two cam driven and solenoid fired high pressure fuel pumps which in turn supplies the injectors with fuel.

A dual-lobe cam located on each intake camshaft drive the 4.2L FSI V8's Hitachi high pressure fuel pumps. As engine speed increases, so does each pump's ability to displace a greater volume of fuel per minute. The maximum volume each pump can deliver per revolution on the dual-lobe cam is dictated by the stroke length from each cam lobe's lift and bore diameter of each pump's internal pressurizing cylinder. It's important to understand, despite the name, APR's High Pressure Fuel Pump upgrades are not necessarily designed to increase the engine's fuel rail pressure. The primary goal is to increase the volume of available fuel.

The engine's fueling system is very capable without modification, even at high power levels generated using APR's previously available Stage III TVS1320 Supercharger System. However, APR's Stage III+ TVS1740 Supercharger System System is capable of generating significantly more power and requires modification to high pressure fuel pumps to keep up with fueling demands.

APR High Pressure Fuel Pumps

HPFP
APR High Pressure Fuel Pump Internals

Internals
Each APR High Pressure Fuel Pump addresses fueling needs and leaves plenty of headroom for safety and further increased power levels in the future. By increasing each pump's internal capacity, the fueling system is capable of displacing a higher volume of fuel per minute at every RPM.

 Vehicle Fitment

  • Engine/Tuning
  • Shop By Car/Audi/S5 (B8)/Engine Tuning

Returns

Our policy lasts 14 days from the date of delivery. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging and suitable for resale. Return postages costs are at the expense of the buyer and we recommend using a tracked and insured service.

All returns will be subject to a 10% restocking fee, outbound postage fees will also be deducted from the refunded amount. The handling fee is to cover costs incurred through processing credit card payments and postage and packaging costs.

Several types of goods are exempt from being returned.

Once a special, non-stock item has been processed we are unable to offer a refund.

To complete your return, please contact us as soon as possible.

Any items that return to us damaged or not 'as new' condition may be subject to a partial refund.

 

Refunds (if applicable)

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Sale and group buy items (if applicable)
Only regular priced items may be refunded, unfortunately sale and group buy items cannot be refunded.

Damaged or defective goods
If goods arrive damaged or incomplete Wayside Performance must be notified within 24hours of delivery.

If we have wrongly supplied parts we will at first try to supply the correct parts to you. If the correct products are not available we will reimburse the full purchase price if within 14 days. Wayside Performance is not responsible for any labour charges incurred during the fitment, or removal of suspected incorrect ordered or supplied parts.

Warranties
Generally warranties are with the product manufacturer and not with Wayside Performance, therefore the product manufacturer should be the first point of contact. If you are unable to get in touch with the manufacturer please feel free to contact us and we will do all we can to assist.

APR High Pressure Fuel Pump - Audi S5 4.2FSI
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