SKP SKFJ671 Fuel Injector 06B-133-551

( Brand: Skp ), ( Manufacturer Part Number: SKFJ671 ), ( Type: Fuel Injector ), ( Item Weight: 0.1000 ), ( Item Length: 3.500 ), ( Item Width: 1.600 ), ( Item Height: 1.000 ), ( Country Of Origin: China ), ( Ipn: 06b 133 551 )

Review SKP Fuel Injector Audi Volkswagen fits QUATTRO PASSAT A4 S4 2000–2006

The **SKP SKFJ671 Fuel Injector** is a high-performance, direct-injection component meticulously engineered to deliver exceptional fuel delivery precision for the **2000 2006 Audi A4, Volkswagen Passat, and S4 Quattro** models equipped with the **2.7L VR6 (AUM, BAM, or BBD) or 3.2L VR6 (BBD) engines**. Designed to meet or exceed OEM specifications, this injector is built with **high-quality stainless steel internals** and a **ceramic-coated nozzle** to ensure durability, resistance to fuel system contaminants, and optimal spray pattern consistency over extended use. The SKFJ671 features a **high-flow capacity** (typically around **600 700 cc/min at 4 bar**), allowing for precise metering of fuel under high-pressure conditions, which is critical for maintaining peak performance, throttle response, and fuel efficiency in turbocharged or naturally aspirated applications. Its **sealed O-ring and precision-machined housing** prevent leaks and ensure a secure fit within the fuel rail, while the **low-resistance coil winding** minimizes electrical resistance for reliable activation, even under demanding driving conditions. Whether used in stock applications for improved longevity or in performance builds for enhanced power delivery, this injector is a reliable upgrade choice for enthusiasts seeking to restore OEM performance, eliminate fueling issues, or support modifications like forced induction. Built to withstand the rigors of modern fuel systems, the SKP SKFJ671 is a drop-in replacement that maintains compatibility with stock ECU tuning, though dynamic tuning may be required for aggressive modifications to optimize fuel delivery curves. Its robust construction and consistent performance make it a trusted component for both restoration projects and high-performance setups in this popular Volkswagen/Audi lineup.

### Pros and Cons of buying a SKP SKFJ671 Fuel Injector for 00-06 Audi/VW A4, S4, or Passat (Quattro)

1. **High-Quality Material and Build** SKP injectors are known for their robust construction, often featuring stainless steel components and precise machining. This enhances durability, especially in high-performance or modified applications.

2. **Improved Fuel Atomization** The SKFJ671 is designed to provide better fuel atomization compared to OEM injectors, leading to more efficient combustion. This can result in smoother power delivery, reduced carbon buildup, and better throttle response.

3. **Compatibility with Turbocharged Engines** Since the 00-06 A4/S4/Passat Quattro models often come with turbocharged engines (e.g., 2.7L VR6, 3.2L VR6, or 2.8L V6), SKP injectors are engineered to handle higher fuel pressures and flow rates, making them suitable for forced induction setups.

4. **Better Performance in Modified Applications** If you plan to add turbocharging, nitrous, or other performance upgrades, SKP injectors can support increased power outputs without failing prematurely. They are often used in tuning scenarios where OEM injectors would be insufficient.

5. **Longer Lifespan Compared to OEM** Many users report that SKP injectors last longer than stock injectors, especially when properly maintained. Their durability is a key selling point for those looking to avoid frequent replacements.

6. **Wide Availability and Support** SKP is a well-established brand with a strong aftermarket presence. Finding replacement parts, gaskets, and installation guides is relatively easy, and they offer customer support for troubleshooting.

7. **Potential for Better Fuel Efficiency (in Some Cases)** While not guaranteed, improved atomization can lead to more complete combustion, which may slightly improve fuel economy in certain driving conditions, though this is less common than in performance applications.

8. **Direct Replacement Fitment** The SKFJ671 is designed as a direct drop-in replacement for the OEM injectors in these models, meaning no modifications to the fuel system are typically required beyond basic installation steps.

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1. **Higher Upfront Cost** SKP injectors are significantly more expensive than OEM or generic aftermarket alternatives. For a single injector, the price can be 2-3 times that of an OEM part, and for a full set, the cost adds up quickly.

2. **Requires Proper Installation and Tuning** SKP injectors are not "plug-and-play" in the sense that they will work perfectly without adjustments. You ll need to:

- Ensure the fuel system (pump, pressure regulator, lines) is compatible with the higher flow rates.

- Have the ECU tuned (via a chip, tune, or standalone ECU) to account for the increased fuel delivery. Improper tuning can lead to rich/lean conditions, drivability issues, or even damage.

- Verify that the fuel pressure regulator is set correctly for the new injectors.

3. **Potential for Overkill on Stock Applications** If you re running a stock or lightly modified engine without significant power gains, the SKFJ671 may be more expensive than necessary. OEM injectors or slightly upgraded aftermarket options (e.g., Delphi or Stanadyne) might suffice for daily driving.

4. **Maintenance Requirements** SKP injectors, like all high-flow injectors, require regular maintenance to prevent clogging or failure. This includes:

- Using high-quality fuel additives (e.g., Seafoam, Techron).

- Periodic cleaning (ultrasonic or manual cleaning kits).

- Ensuring the fuel system is free of contaminants.

- Monitoring fuel pressure and injector operation.

5. **Risk of Improper Pairing with Other Components** If other parts of the fuel system (e.g., a weak fuel pump, old fuel lines, or an incompatible pressure regulator) are not upgraded, the injectors may not perform optimally. This can lead to inconsistent fuel delivery or even injector failure.

6. **Limited Warranty Compared to Some Brands** While SKP offers a warranty, it may not be as extensive as some competitors (e.g., Delphi or Stanadyne). Always check the warranty terms before purchasing.

7. **Potential for Learning Curve** Installing and tuning SKP injectors requires some mechanical and tuning knowledge. Beginners may need to consult a professional or spend time researching proper setup procedures.

8. **Not Always Necessary for Mild Modifications** If you re adding a mild turbo or minor power upgrades (e.g., 100-200 hp), you might not need SKP injectors immediately. Lower-cost injectors (e.g., Delphi 250cc or Stanadyne 1000cc) may be sufficient for the power level.

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The **SKP SKFJ671 fuel injector** is an excellent choice for **00-06 Audi/VW A4, S4, or Passat Quattro owners** who are pursuing **significant performance upgrades**, such as turbocharging, nitrous, or high-power builds. Its superior build quality, durability, and ability to handle high fuel pressures make it a reliable option for forced induction applications. However, it is **not a necessary upgrade for stock or mildly modified vehicles**, where the cost may not be justified.

If you re running a **stock or lightly modified engine**, consider **OEM or slightly upgraded injectors** (e.g., Delphi 250cc or Stanadyne 1000cc) to save money while still improving performance. If you re **adding turbocharging or aiming for 300 hp**, the SKFJ671 is a **strong, long-term investment** that will support your goals with proper tuning and maintenance.

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- You are planning **turbocharging, nitrous, or a high-power build** (300 hp).

- You want **long-term reliability** and are willing to invest in proper tuning and maintenance.

- You prefer a **premium, high-quality injector** that can handle aggressive modifications.

- You re running a **stock or mildly modified engine** (OEM or Delphi injectors may suffice).

- You want to **save money** and are not pushing for extreme power gains.

- You lack experience with **fuel system tuning** and prefer a simpler upgrade path.

- Your **fuel pump, pressure regulator, and fuel lines** are compatible or upgraded.

- You have access to **proper tuning** (a standalone ECU or professional tune is recommended).

- You are prepared for **regular maintenance** (cleaning, fuel additives, pressure checks).

For most **00-06 A4/S4/Passat Quattro owners**, the SKFJ671 is a **premium upgrade worth considering for serious modifications**, but it is not a mandatory purchase for everyday driving. Always weigh the cost against your specific power goals and budget.

Details:

Audi 06B 133 551 M. All accessories hardware. This brand-new, high-quality aftermarket fuel injector is engineered to exceed OEM specifications, restoring your engines power and efficiency. FEATURES: Built to last: Engineered with premium materials and exceeding OEM standards, this injector delivers long-lasting performance reliability.

Perfect fit: Enjoy guaranteed fit and quality, ensuring hassle-free installation worry-free operation. SKP SKFJ671 Fuel Injector For 00-06 Audi Volkswagen A4 Quattro Passat S4. Volkswagen 06B 133 551 M.

Standard Motor Products FJ671. Original packaging. Placing an order outside the US is easy. Precise fuel delivery: Experience smooth, consistent spray and itemization, ensuring optimal combustion for improved power economy.

part #: skfj671 prices

• $55.95-$59.26

specifications carfuelinjector:

• for models: A4, S4, Quattro, Passat
• for makes: Audi, Volkswagen
• for years: 2000-2006
• brand: Skp
• mpn: Skfj671
• type: Fuel Injector
• item weight: 0.1000
• item length: 3.500
• item width: 1.600
• item height: 1.000
• country of origin: China
• ipn: 06b 133 551

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offer carfuelinjector:

• sold: 0
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• started: February 5, 2026

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• class: Standard
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• type: Fixed
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• service: Standard

general carfuelinjector:

• condition: New
• Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors

seller carfuelinjector:

• city: Miami, Florida
• # reviews: 144488
• rating: 99.4%

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