Air and Fuel› Fuel Injection Systems and Components - Electronic
APR Tuning
High Pressure Fuel Pumps 4.2L FSI (Rebuilds) Fits Audi R8 08-15, RS4 07-08, S5 08-12 APR
SKU: A0CU MS100073
Moderate — 2–4 hours
Description
Part #: MS100073
The APR High Pressure Fuel Pump (HPFP) increases maximum volume of fuel the HPFP can deliver by 41% over stock! 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.
Features:
- Dramatically increases the volume of fuel displaced by the HPFP by 41%
- Maintains higher pressures under demanding situations
- Fully rebuilt in house
- Fully machine tested and broken in before shipping
- Rebuilds your factory pumps
- Upgraded and weight matched spring
- DLC coated piston
- Heat-treated bearing-grade stainless steel material
- Supports big power
- .00004" dimensional tolerances
- .00005" geometrical tolerances
- Spring seals replaced
Fits Audi R8 08-15, RS4 07-08, S5 08-12
MIA's Description
Fitment
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Specifications
| Brand | APR Tuning |
| Part Number | A0CU MS100073 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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