VIS Motorsport High Pressure Fuel Pump Upgrade Kit EA839 Audi RS4 RS5 S4 S5 B9
Modification of the EA839 engine B9 S4 / S5 / RS4 / RS5 / SQ5 far beyond OEM power levels requires an additional volume of high-pressure fuel in order to avoid "fuel cuts" especially in the midrange ( 3000-5000 rpm ). In many cases we see the factory fuel pump begin to suffer from pressure loss.
The limitation of how much volume of fuel the high pressure pump can flow is dependent upon the volume displaced by the pressurizing cylinder inside the pump.
In order to address the lack of fuel and as power outputs achievable never stop increasing. VIS Motorsport developed the EA839 HPFP UPGRADE KIT to suit every customers build needs, also the first company who designed and implemented a working bigger kit/size available to customers around the world.
It has 20% more surface area and is capable of over 275 bar+ of pressure, and less weight by 10% compared to OE (fuel pressure is dependant to type of engine as it fits many applications)
This monster is ready for big turbo applications or just for stock power giving another 15 bar fuel rail pressure and some extra hp especially in mid-range. Piston head is optimized for ideal hydrodynamic flow. The surface is hardened and heat treated in 2 different stages
Its been tested on many configurations and different hardware/software setups around the globe and all have proven again and again the reliability and performance you can expect from each and every VIS Motorsport HPFP Upgrade kit.
Facts:
- clearance at top of piston 0.001-0.00015
- Deviation of circularity max 0.001mm
- 370-450hb before rectification
- nitride at depth of 0.15-0.25
- hardness of hv10-760- kgf/mm2 for sleeve and hv 50-56/1200-1400kgf/mm2 for piston
- nitrided H13 alloy/ 34mocr11 /rul 1vb3/ rul1vc2
- good thermal and shock resistance or heat cracking
- mechanical characteristics and thoghness in hot condition,constant hardness throughout the production cycle
- high micro purity-level suitable for polishing
- posibility to be coated to pvd/pa cvd methods flame induction hardening and nitriding
- tensile strenght 1960kgf/mm2
- yeld strenght 1570kgf/mm2
- This is for the people who would like the internals on there own. Can be supplied with new Genuine fuel pump for extra
Vehicle Fitment:
- Audi S4 S5 B9
- Audi RS4 RS5 B9
- Audi SQ5 B9
Also fits facelift and B9.5 Variants
IMPORTANT NOTE REGARDING - STOCK LEVELS
If you are in urgent need of this product or have any doubt of whether it is in stock due to low quantity, please contact us prior to placing your order to check for availability.
Please read bullet points before purchase:
The available item quantity is correct at the time of uploading this listing.
This product may have multiple listings due to application of other suitable vehicles which affect stock levels.
This product may also be listed on our website which it may be sold through.
This product may also have sold through our retail store.
*Please note: The majority of VIS Motorsport products are processed straight away, but occasionally some applications have to be special ordered which can usually take 10-15 working days. If there will be any delays in your order you will be informed within 24-48 hours.
The image shows the old original pump against the uprated VIS part, original is on the top, the VIS is the bottom
Distributed By Haz MotorsportProduct Details
Brand: VIS Motorsport
Manufacturer Part Number: VISEA839V6
Type: Fuel Pump
Reference OE/OEM Number: VISEA839V6
Classic Part: No
Engine Fitment: EA839 V6 Turbo Applications Only
Fuel Type: N/A
Items Included: N/A
