AUDI 079-131-101-L Secondary Air Pump Injection Check Valve

( Manufacturer Part Number: 079-131-101-L ), ( Part Type: Valve Pump Check ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Year: 2008 2009 2010 2011 ), ( Parts Included: Only Part Reference 13 On The Diagram Is Included ), ( Placement On Vehicle: Left )

Review AUDI Genuine Secondary Air Injection Pump Check Valve fits 2008–2011

The **Audi 079-131-101-L Secondary Air Injection Pump Check Valve** is a precision-engineered component designed to maintain optimal performance and efficiency within a vehicle s secondary air injection system, a critical element in modern diesel engines. This check valve plays a pivotal role in the **Exhaust Gas Recirculation (EGR) and Diesel Particulate Filter (DPF) regeneration processes**, ensuring that air is introduced into the exhaust stream at the precise moment required to facilitate combustion and reduce harmful emissions. Crafted from high-grade materials, the valve is built to withstand the extreme temperatures and pressures encountered in high-performance diesel applications, making it a durable solution for Audi vehicles equipped with TDI engines. The internal mechanism of the check valve is meticulously calibrated to allow unidirectional airflow, preventing backflow while permitting controlled air injection during active regeneration cycles. This prevents the accumulation of soot in the DPF, thereby extending the lifespan of the filtration system and enhancing overall engine reliability. Whether installed in a **2.0L TDI or 3.0L V6 TDI engine**, this component is essential for compliance with stringent emissions regulations while ensuring that the vehicle operates at peak efficiency. Its seamless integration with the secondary air injection pump guarantees that the system functions as intended, delivering cleaner exhaust emissions and reducing the risk of costly DPF clogging or engine performance degradation over time. For Audi owners seeking to maintain their vehicle s performance and longevity, this check valve represents a vital, yet often overlooked, part of the emissions control system.

### **Pros and Cons of buying a Audi 079-131-101-L Secondary Air Injection Pump Check Valve**

1. **Compatibility and Fit:** This part is specifically designed for Audi vehicles, ensuring a proper fit without modifications. It is a direct replacement for the original equipment manufacturer (OEM) component, reducing the risk of installation issues.

2. **Functionality:** The secondary air injection system is critical for modern diesel engines, particularly those equipped with a diesel particulate filter (DPF). This check valve regulates airflow into the exhaust system, aiding in the reduction of emissions during cold starts and engine warm-up. A faulty check valve can lead to poor engine performance, increased emissions, and potential DPF clogging.

3. **Quality and Durability:** Audi parts, even aftermarket or remanufactured ones, are generally built to meet or exceed OEM standards. A high-quality check valve will last longer and perform reliably, reducing the likelihood of frequent replacements.

4. **Ease of Installation:** This part is relatively straightforward to install, especially if you have basic mechanical skills or access to a professional mechanic. It typically requires minimal tools and does not involve complex procedures like engine disassembly.

5. **Cost-Effective Solution:** Replacing a faulty check valve is significantly cheaper than dealing with the consequences of a failing secondary air injection system, such as DPF regeneration failures, increased fuel consumption, or engine damage from excessive soot buildup.

6. **Warranty and Support:** Purchasing from a reputable supplier may include warranties or return policies, providing peace of mind in case the part fails prematurely. Some suppliers also offer technical support to guide you through installation or troubleshooting.

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1. **Cost:** While cheaper than some other engine components, the secondary air injection pump and check valve can still be a noticeable expense, especially if purchased from a premium supplier. Prices may vary depending on whether the part is new, remanufactured, or aftermarket.

2. **Availability:** Depending on your location, finding this specific part may require ordering from an online supplier, which could involve shipping delays. Some local auto parts stores may not stock it, forcing you to rely on online retailers.

3. **Potential Counterfeit Parts:** There is a risk of purchasing counterfeit or low-quality parts, especially if buying from untrusted sellers. Counterfeit parts may fail quickly, leading to repeated replacements and frustration.

4. **Diagnostic Challenges:** If the symptoms you re experiencing are not directly related to the check valve (e.g., a failing air pump, clogged DPF, or electrical issues), replacing just the check valve may not resolve the problem. Proper diagnostics are essential to ensure you re addressing the root cause.

5. **Installation Risks:** If you attempt to install the part yourself without experience, there is a risk of damaging surrounding components or failing to seat the valve properly. Improper installation could lead to leaks, reduced performance, or even damage to the air injection system.

6. **Compatibility with Modified Engines:** If your vehicle has been modified (e.g., turbocharged, tuned, or aftermarket exhaust systems installed), the original check valve may not function optimally. In such cases, a performance-oriented or upgraded part may be necessary.

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The Audi 079-131-101-L secondary air injection pump check valve is a critical and relatively straightforward component to replace if you re experiencing issues with your vehicle s emissions system, cold-start performance, or DPF regeneration. The pros outweigh the cons for most drivers, as the benefits of improved engine efficiency, reduced emissions, and prevention of further damage far justify the cost and effort. However, the decision should be based on a few key considerations:

- **Symptoms:** Ensure that the check valve is indeed the source of your problems. Common signs include check engine lights (with codes related to the secondary air system), rough idle, or increased exhaust smoke.

- **Source:** Purchase from a reputable supplier to avoid counterfeit or low-quality parts. Look for reviews, warranties, and clear product descriptions.

- **Installation:** If you re not confident in your mechanical skills, have a professional mechanic install it to avoid complications.

- **Long-Term Benefits:** Replacing a faulty check valve can prevent more expensive repairs down the line, such as DPF cleaning or engine tune-ups.

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If you ve confirmed that the secondary air injection check valve is faulty and you re experiencing related issues (e.g., DPF problems, poor cold-start performance, or check engine lights), proceed with purchasing the **Audi 079-131-101-L check valve** from a trusted supplier like:

- **OEM or Genuine Audi Parts Dealers** (most reliable but potentially pricier).

- **Reputable Aftermarket Suppliers** (e.g., RockAuto, Dorman, or local Audi specialty shops) that offer warranties and positive customer feedback.

- **Remanufactured Parts** (if available), as they often provide a cost-effective alternative to new OEM parts without sacrificing quality.

Before buying, verify the part number matches your vehicle s specifications (check your vehicle s service manual or consult a mechanic). If in doubt, consult an Audi specialist to confirm compatibility and installation requirements.

For most drivers, replacing this part is a wise investment in maintaining engine health and compliance with emissions standards.

Details:

Electrical parts are not returnable. Audi Mid West. To 05/31/ 2010. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

All of the parts on our site are genuine OEM at discount prices that ship directly to your door fast and affordably. Parts must be resalable and in the original packaging. 4.2L, engine area.

part #: 079131101 prices

• $41.50-$362.31

specifications emissyste:

• for makes: Audi
• for years: 2008-2011
• mpn: 079-131-101-l
• part type: Valve Pump Check
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• year: 2008 2009 2010 2011
• parts included: Only Part Reference 13 On The Diagram Is Included
• placement on vehicle: Left

payments emissyste:

• wallet: Google-pay
• other
• credit card: Visa

seller emissyste:

• # reviews: 3973
• rating: 99.8%
• city: Omaha, Nebraska

offer emissyste:

• sold: 0
• quantity: 1
• started: May 23, 2026
• availability: In Stock
• options: Ship-to-home

shipping emissyste:

• class: Standard
• service: Standard
• type: Fixed
• cost: $9.15
• transit: 5-10 Days

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: New

returns emissyste:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

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