| Year | Make | Model |
|---|---|---|
| 2007 - 2017 | Audi | S5 |
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APR High Pressure Fuel Pumps | Audi S5 4.2L V8 (Post Nov 2008) MS100077
APR High Pressure Fuel Pumps | Audi S5 4.2L V8 (Post Nov 2008) MS100077
SKU:MS100077
Out of stock
Regular price
$3,449.95 USD
Regular price
$3,881.95 USD
Sale price
$3,449.95 USD
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▶ Vehicle Fitments
The APR High Pressure Fuel Pump (HPFP) for the 2008-2012 Audi S5 4.2L V8 is a high-performance replacement component designed to ensure reliable fuel delivery at elevated pressures. Constructed with precision-machined internals, the pump features a plunger and barrel made from certified, heat-treated bearing-grade stainless steel, with the plunger receiving a diamond-like coating for enhanced surface hardness and durability. Dimensional tolerances are maintained as tight as .00004", and geometric tolerances as tight as .00005", ensuring optimal fit and function. All internal seals, including the spring seal, are replaced during assembly, and the pump retains the factory pivoting head to minimize cam follower wear and piston side loading. These features collectively deliver ultra-reliable operation and consistent performance under demanding conditions.
Designed as a direct replacement for the factory unit on vehicles equipped with the 4.2L V8 engine from 2008 to 2012, this HPFP is suitable for high-performance street and track use. Proper installation requires a clean environment and precise machining of internals to prevent failure. The kit includes the pump with all internal seals replaced and the specified spring to prevent plunger float. It is intended for enthusiasts seeking a durable, high-quality upgrade that maintains OEM fitment and performance. This pump is ideal for those looking to improve fuel system reliability and efficiency in high-performance applications.
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Overview
Overview
APR High Pressure Fuel Pumps
Fits 2008–2012 Audi S5 4.2L V8 (Post Nov 2008)
Part #: MS100077
Overview
The APR High Pressure Fuel Pump (HPFP) is a high-performance replacement component designed specifically for the 2008 to 2012 Audi S5 equipped with the 4.2L V8 engine. Engineered for enthusiasts and professionals alike, this pump ensures reliable fuel delivery under demanding conditions, supporting optimal engine response and efficiency. Crafted with precision and durability in mind, it is ideal for those seeking to maintain or enhance their vehicle’s fuel system integrity and performance.
Key Features
- Machined from certified, heat-treated bearing-grade stainless steel for exceptional strength and longevity
- Diamond-like coating on the plunger for increased surface hardness and wear resistance
- Manufactured with ultra-tight dimensional tolerances (.00004") and geometric tolerances (.00005") for precise operation
- Includes a properly specified spring to prevent plunger float and ensure consistent fuel pressure
- All internal seals, including the spring seal, are replaced for optimal sealing and reliability
- Factory pivoting head design reduces cam follower wear and piston side loading
Construction & Design
The APR HPFP features meticulously machined internals designed to meet the highest standards of precision engineering. The use of heat-treated stainless steel and diamond-like coating ensures the pump withstands the rigors of high-performance driving, providing long-lasting durability and consistent fuel delivery. The tight manufacturing tolerances and sealed construction contribute to its reliable operation and ease of installation.
Installation & Fitment
This high-pressure fuel pump is a direct replacement for the factory unit in compatible Audi S5 models from 2008 to 2012. Proper installation requires a clean environment and precise handling to ensure the internal tolerances are maintained, supporting optimal performance and longevity.
