APR High Pressure Fuel Pumps
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APR High Pressure Fuel Pumps - Audi S5 (B8) MY09-12 - 4.2L V8
APR built its high pressure fuel pump upgrade to solve a known weak point in the factory unit, giving the Audi S5 the fuelling reliability needed for sustained high load driving. Each pump is precision machined and assembled to motorsport grade tolerances, addressing the premature wear that plagues the stock internals.
This listing covers the Audi S5 Coupe B8 (8T), MY09-12, fitted with the 4.2L V8 engine. SKU: MS100077.
Key Features
- Plunger and barrel machined from heat treated, bearing grade stainless steel
- Diamond like coating applied to the plunger for increased surface hardness
- Correctly specified replacement spring to prevent float from added plunger mass
- All internal seals replaced, including the spring seal
- Factory pivoting head retained to reduce cam follower wear and piston side loading
- Assembled to dimensional tolerances as tight as 0.001mm
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and configuration are confirmed before ordering.
Not sure if this pump suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Audi | S5 | B8 (8T) | - |
Technical Specifications
| Spec | Value |
|---|---|
| Dimensional Tolerance | 0.001 mm (.00004 in) |
| Geometric Tolerance | 0.0013 mm (.00005 in) |
| Plunger & Barrel Material | Certified, heat-treated bearing-grade stainless steel |
| Plunger Coating | Diamond-like coating (DLC) for increased surface hardness |
| Spring | Application-specific spring supplied to prevent float from altered plunger mass |
| Internal Seals | All internal seals replaced, including spring seal |
| Pump Tip Design | Retains factory pivoting head to reduce cam follower wear and piston side loading |
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