# APR 07-08 Audi RS4 4.2L FSI High Pressure Fuel Pumps - Rebuilds

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.

-   Dramatically increases the volume of fuel displaced by the HPFP by 41%
-   Maintains higher pressures under demanding situations
-   Heat-treated bearing-grade stainless steel material
-   Fully machine tested and broken in before shipping
-   Upgraded and weight matched spring
-   .00004" dimensional tolerances
-   .00005" geometrical tolerances
-   Rebuilds your factory pumps
-   Fully rebuilt in house
-   Spring seals replaced
-   Supports big power
-   DLC coated piston

This Part Fits:

Year

Make

Model

Submodel

2008-2012,2014-2015

Audi

R8

Base

2011-2012,2014-2015

Audi

R8

Spyder

2007-2008

Audi

RS4

Base

2008

Audi

RS4

Cabriolet

2008-2012

Audi

S5

Base

## Details

- **Price:** 2915.58 CAD
- **Vendor:** APR
- **Type:** Fuel Pumps

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2915.58 CAD | In stock |

## Images

- Photo - Primary
- Photo - out of package
- Photo - out of package
- Photo - out of package

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/apr-07-08-audi-rs4-4-2l-fsi-high-pressure-fuel-pumps-rebuilds)
> Updated: 2026-07-15