AUDI 8J0-809-933-E Retainer

( Manufacturer Part Number: 8J0-809-933-E )

Review AUDI Genuine Retainer

The **Audi 8J0 809 933-E Retainer** is a high-quality, precision-engineered component designed specifically for Audi vehicles, serving as a critical link between the engine s crankshaft and the transmission s input shaft. This retainer, often referred to as a "crankshaft pulley retainer" or "crankshaft damper retainer," plays a vital role in maintaining the proper alignment and balance of the engine s rotating assembly while also absorbing vibrations to enhance smooth operation. Crafted from durable, heat-treated steel, this retainer is built to withstand the rigorous demands of modern automotive engines, ensuring long-lasting performance under high-speed and high-torque conditions. Its robust construction includes a robust flange designed to securely fasten the crankshaft pulley, preventing slippage or misalignment that could lead to premature wear on the engine s internal components. The retainer s precise fitment is engineered to match Audi s stringent manufacturing tolerances, guaranteeing a snug and interference-free installation across compatible models, including those equipped with the 2.0L and 3.0L turbocharged engines found in vehicles like the Audi A4, A6, Q5, and S5. Beyond its structural integrity, this retainer also contributes to the engine s overall efficiency by minimizing parasitic losses, allowing the powertrain to operate with optimal power delivery and fuel economy. Whether used in a routine maintenance service or as part of a performance upgrade, the **8J0 809 933-E** retainer exemplifies Audi s commitment to precision engineering, offering a reliable and high-performance solution for maintaining the health and longevity of your vehicle s drivetrain.

### **Pros and Cons of Buying an Audi 8J0-809-933-E Retainer (Audi A6/A7/A8 Brake Master Cylinder Kit)**

#### **Overview**

The **Audi 8J0-809-933-E** is a brake master cylinder kit designed for **Audi A6 (C7), A7, and A8 (D2)** models. It is a critical component for hydraulic brake systems, ensuring proper brake fluid pressure and functionality. Below is a detailed analysis of its advantages and disadvantages.

---

### **Pros**

1. **High Quality and Reliability**

- Audi s original equipment (OEM) parts are engineered to meet strict quality standards, ensuring durability and consistent performance.

- The master cylinder is built to handle high-pressure hydraulic demands, reducing the risk of brake failure over time.

2. **Direct Fitment for Audi Models**

- Designed specifically for **Audi A6 (C7), A7, and A8 (D2)**, ensuring compatibility without modifications.

- Minimizes the risk of installation errors that could arise with aftermarket parts that may not fit perfectly.

3. **Enhanced Safety**

- A properly functioning master cylinder is essential for reliable braking. Worn or leaking master cylinders can lead to brake failure, which is a critical safety concern.

- Replacing a faulty master cylinder with an OEM part restores confidence in the braking system.

4. **Long-Term Durability**

- Audi s master cylinders are typically built to last the lifespan of the vehicle if maintained properly (fluid changes, inspections).

- Reduces the likelihood of premature wear compared to lower-quality aftermarket alternatives.

5. **Warranty Coverage**

- Purchasing from an authorized Audi dealer or reputable supplier may include warranty coverage, providing peace of mind against defects.

- Some aftermarket parts lack warranties, leaving the buyer exposed to potential early failures.

6. **Compatibility with Audi s Brake System**

- Works seamlessly with Audi s **EBS (Electronic Brake System)** and **ABS**, ensuring optimal integration with the vehicle s braking electronics.

- Avoids potential software or calibration issues that can arise with non-OEM parts.

7. **Resale Value Preservation**

- Using OEM parts when performing maintenance helps maintain the vehicle s value, especially for high-mileage or used Audi models.

---

### **Cons**

1. **Higher Cost Compared to Aftermarket Alternatives**

- OEM Audi parts are significantly more expensive than aftermarket equivalents, which may not offer the same quality but are often priced lower.

- The **8J0-809-933-E** can cost **2-3 times more** than a comparable aftermarket master cylinder.

2. **Longer Lead Times**

- OEM parts may take **weeks to arrive**, especially if ordered from a dealer or directly from Audi.

- Aftermarket parts are often available for immediate shipping, reducing downtime.

3. **Potential Overkill for Some Owners**

- If the vehicle is older or has high mileage, some owners may question whether an OEM part is necessary, especially if the master cylinder is only slightly worn.

- In such cases, a high-quality aftermarket part (e.g., **Bosch, ATE, or Dorman**) may suffice at a lower cost.

4. **Installation Complexity**

- Replacing a master cylinder requires **bleeding the brake system** to remove air, which can be time-consuming and may require professional assistance.

- Improper bleeding can lead to **spongy brakes** or reduced braking efficiency.

5. **Environmental and Ethical Considerations**

- OEM parts are often sourced from **new manufacturing**, contributing to higher production waste compared to refurbished or remanufactured aftermarket parts.

- Some buyers prefer sustainable or recycled alternatives, which may not be available in OEM options.

6. **Risk of Overpaying for Brand Name**

- Audi s reputation for luxury and reliability may lead some buyers to overvalue the part, even when aftermarket options perform equally well.

- Without mechanical expertise, it can be difficult to distinguish between truly high-quality aftermarket parts and inferior ones.

7. **Potential for Counterfeit OEM Parts**

- Purchasing from unauthorized sellers (e.g., eBay, untrusted online marketplaces) increases the risk of receiving **fake OEM parts** that may fail prematurely.

- Always buy from **authorized dealers or reputable suppliers** to avoid this issue.

---

### **Ending Conclusion**

The **Audi 8J0-809-933-E brake master cylinder kit** is a **high-quality, reliable, and safe choice** for Audi A6 (C7), A7, and A8 (D2) owners who prioritize **durability, compatibility, and peace of mind**. Its OEM status ensures **direct fitment, long-term performance, and seamless integration** with the vehicle s braking system. However, the **higher cost, longer lead times, and potential overkill for minor issues** make it less ideal for budget-conscious buyers or those with older vehicles.

For most **serious Audi enthusiasts or owners who value long-term reliability**, the **8J0-809-933-E is the best choice**, especially if the vehicle is still under warranty or has significant remaining value. If cost is a major concern, a **high-end aftermarket alternative (e.g., Bosch 0986426377 or ATE 1306000)** can offer similar performance at a fraction of the price, provided the buyer sources it from a trusted supplier.

---

### **Final Recommendation**

- You want the **absolute best quality and warranty coverage**.

- Your vehicle is **high-value or still under Audi warranty**.

- You prioritize **long-term reliability and safety** over cost savings.

- You are **replacing a known faulty master cylinder** (not just routine maintenance).

- You are on a **tight budget** and can find a **reputable brand** (Bosch, ATE, Dorman, or Febi).

- The vehicle is **older with high mileage**, and the master cylinder is only **mildly worn**.

- You need the part **immediately** and can source it from a trusted supplier.

- You are comfortable **researching and verifying** the aftermarket part s quality.

- Always **bleed the brake system properly** after replacement.

- Use **high-quality brake fluid** (DOT 4 or DOT 5.1, as specified in the owner s manual).

- Follow **Audi s maintenance schedule** for brake inspections and fluid changes.

For most Audi owners, **the 8J0-809-933-E is the safest and most reliable option**, but a **well-researched aftermarket part** can be a cost-effective alternative when necessary.

Details:

Genuine Audi Retainer 8J0-809-933-E, New Old Stock. Items are stored in a climate controlled low humidity environment.

part #: 8j0809933 prices

• $24.36-$32.99

specifications carlockiio:

• for makes: Audi
• mpn: 8j0-809-933-e

offer carlockiio:

• options: Ship-to-home
• started: May 9, 2026
• quantity: 1
• sold: 0
• availability: In Stock

shipping carlockiio:

• class: Standard
• type: Fixed
• service: Standard
• transit: 4-7 Days
• cost: $0.00

seller carlockiio:

• city: Jersey Shore, Pennsylvania
• rating: 99.4%
• # reviews: 17001

general carlockiio:

• condition: New
• Car Truck Parts Accessories > Exterior Parts Accessories > Exterior Locks Lock Hardware

payments carlockiio:

• wallet: Apple-pay
• other
• credit card: Diners-club

returns carlockiio:

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

Audi 8J0-809-933 Is Similar To:

• 3b0837885k Base Genuine Oem Volkswagen Audi (38.5% similar) ...(August 5th, 2014)
• Genuine Handle Audi Factory 4b1837019g1v5 Oem Original (24.7% similar) New left Freon door inner door handle part 4B1 B1RQ fits audi a6 a6 S6...(November 11th, 2014)
• 4d0837183b Vw Audi Oem Genuine (43.1% similar) OEM-XCELLENCE2. Enjoy your visit...(May 21st, 2017)
• Oem 4g8927753 Genuine Audi Sensor (38.2% similar) Oem maintains a comprehensive inventory of high quality genuine oem parts...(October 23rd, 2014)
• 4h0-831-402-a Audi Genuine Oem Upper Hinge (41.6% similar) ...(April 1st, 2018)
• 4h0-837-879-b-gru Audi Genuine Oem Cap (41.1% similar) ...(August 16th, 2018)
• 4h0837206bgru Handle Audi Genuine Oem (38.9% similar) Does not include chrome trim piece. Brand new in origin box...(February 2nd, 2015)
• Oem 4l0837911 Genuine Audi Strip Door (33.3% similar) ...(February 20th, 2015)
• Genuine 8e0831411e Hinge Oem Audi (35.3% similar) ...(November 15th, 2014)
• 8h0-831-701 Audi Genuine Oem Upper Hinge Bolt (40% similar) ...(April 14th, 2018)
• 8h0837349 Lock Oem Audi Cover Genuine (38.9% similar) ...(July 25th, 2014)