| Year | Make | Model |
|---|---|---|
| 2007 - 2016 | Audi | R8 |
| 2005 - 2008 | Audi | RS4 |
| 2007 - 2017 | Audi | S5 |
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APR High Pressure Fuel Pump Rebuilds | Audi RS4 (07-08) (MS100073)
APR High Pressure Fuel Pump Rebuilds | Audi RS4 (07-08) (MS100073)
SKU:MS100073
Out of stock
Regular price
$2,049.95 USD
Regular price
$2,306.95 USD
Sale price
$2,049.95 USD
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▶ Vehicle Fitments
The APR 07-08 Audi RS4 4.2L FSI High Pressure Fuel Pumps rebuild kit is a precision-engineered component designed to restore and enhance fuel delivery performance. Constructed with internally machined parts that require extreme tolerances, this pump features a plunger and barrel made from certified, heat-treated bearing-grade stainless steel. The plunger undergoes a diamond-like coating process to ensure exceptional surface hardness and ultra-reliable operation. All internal seals, including the spring seal, are replaced during rebuild, and the pump retains the factory pivoting head to reduce cam follower wear and piston side loading. These features collectively provide improved durability, consistent fuel pressure, and reliable performance under demanding conditions.
Designed for 2007-2008 Audi RS4 models equipped with a 4.2L FSI engine, this high-pressure fuel pump rebuild is a direct replacement that requires precise installation in a clean environment to prevent failure. It is suitable for performance applications, including street and track use, where maintaining optimal fuel delivery is critical. The kit includes all necessary internal components for a complete rebuild, ensuring proper fitment and function. This product is ideal for enthusiasts seeking to restore or upgrade their fuel system for improved reliability and performance.
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Overview
Overview
APR High Pressure Fuel Pumps
Fits 2007–2008 Audi RS4 4.2L FSI
Part #: MS100073
Overview
The APR 07-08 Audi RS4 4.2L FSI High Pressure Fuel Pumps are rebuilt units designed to restore optimal fuel delivery performance for your vehicle. Crafted for enthusiasts and professionals seeking reliable, high-quality replacement parts, these pumps help maintain engine responsiveness and efficiency. Carefully rebuilt with precision components, they support your vehicle’s fuel system integrity and performance consistency.
Key Features
- Rebuilt high-pressure fuel pump designed specifically for the 2007-2008 Audi RS4 4.2L FSI engine
- Internals machined to extreme tolerances, with dimensional accuracy as tight as .00004"
- Geometric tolerances maintained within .00005" for precise operation
- Plunger and barrel manufactured from certified, heat-treated bearing-grade stainless steel
- Plunger features a diamond-like coating for enhanced surface hardness and durability
- Supplied with a properly specified spring to prevent plunger float and ensure consistent pressure
- All internal seals, including the spring seal, are replaced during rebuild
- Factory pivoting head retained to reduce cam follower wear and piston side loading
Construction & Design
This high-pressure fuel pump features precision-machined internals crafted from premium stainless steel, ensuring durability and reliable operation under demanding conditions. The special coating on the plunger enhances surface hardness, reducing wear and extending service life. The assembly is designed to meet strict tolerances, supporting consistent fuel pressure and flow.
Installation & Fitment
Designed as a direct replacement for the OEM pump, these rebuilt units are intended for straightforward installation in the specified vehicle models. Proper handling and installation in a clean environment are essential to ensure optimal performance and longevity.
What’s Included
This product includes a fully rebuilt high-pressure fuel pump with all internal seals replaced, a properly specified spring, and the factory pivoting head for reduced wear.
