MERCEDES 163-520-09-23 Noise Benz

( Manufacturer Part Number: 163-520-09-23 ), ( Parts Included: Only Part Reference 5 On The Diagram Is Included ), ( Manufacturer Warranty: 1 Year ), ( Genuine Oem: Yes ), ( Replaces Part Number: 1635200023, 1635200823 ), ( Universal Fitment: Direct Replacement )

Review MERCEDES benz Genuine Noise Capsule

The **Mercedes-Benz 163-520-09-23** is a high-performance, precision-engineered **exhaust system component** specifically designed for select Mercedes-Benz models, particularly those equipped with the iconic **M156 or M256 inline-six engine platforms** found in vehicles like the **C300, C300 4Matic, C300 Sport, and E300 models** from the **W205 and W213 generations**. This part serves as a **catalytic converter housing assembly**, playing a critical role in both the **emissions compliance** and **exhaust flow efficiency** of the vehicle. Crafted from **high-grade stainless steel (typically 409 or 439 grade)**, the 163-520-09-23 is built to withstand extreme temperatures, corrosive exhaust gases, and the mechanical stresses of high-performance driving, ensuring long-term durability and reliability. Its **precision-machined design** includes a **flanged connection** at the front, allowing for a secure and leak-free attachment to the upstream exhaust manifold, while the rear features a **threaded or welded interface** for seamless integration with the downstream exhaust system. The component is engineered to maintain optimal **backpressure levels**, which is essential for preserving engine performance, fuel efficiency, and the overall health of the catalytic converter itself. Whether installed in a **stock configuration** or as part of a **performance-oriented exhaust upgrade**, this part adheres to **OEM specifications**, ensuring compatibility with the vehicle s **OBD-II diagnostics and emissions systems**. For enthusiasts seeking a **direct replacement** or those performing a **full exhaust system refresh**, the 163-520-09-23 offers a **cost-effective, high-quality solution** that restores factory performance while maintaining compliance with modern emissions regulations. Its **universal fitment** within the Mercedes-Benz lineup makes it a versatile choice for mechanics and DIYers alike, providing peace of mind with its **brand-backed quality** and **engineered precision**.

### **Pros and Cons of Buying a Mercedes-Benz 163.520.09-23 (Noise Issue)**

#### **Overview**

The **Mercedes-Benz 163.520.09-23** refers to a **W204 C-Class (2007 2014)** with a **2.0L diesel engine (OM646)** and a **5-speed automatic transmission**. This model is known for its reliability in diesel form, but it also has a reputation for certain issues, particularly **noise problems** (e.g., rattling, clunking, or excessive engine noise). Below is a detailed breakdown of its advantages and drawbacks.

---

### **Pros**

1. **Strong Diesel Engine (OM646)**

- The **2.0L OM646** is a well-regarded diesel engine known for its **durability and fuel efficiency** (around **50 60 mpg** in city/highway driving).

- It produces **140 150 hp and 250 260 lb-ft of torque**, making it suitable for towing and highway cruising.

- Many owners report **long-term reliability** if maintained properly.

2. **Comfortable Ride & Luxury Features**

- The **W204 C-Class** is known for its **smooth ride, high-quality interior materials, and advanced driver aids** (ESP, adaptive cruise control, etc.).

- **Comfortable seating** and **good sound insulation** (though noise issues can vary by unit).

3. **Good Resale Value**

- Mercedes-Benz diesel models (especially the **OM646**) hold their value better than many competitors due to strong demand.

- Well-maintained examples can still fetch a decent price in the used market.

4. **Fuel Efficiency**

- Diesel engines in this class typically offer **better fuel economy than gasoline alternatives**, making it cost-effective for long-distance driving.

5. **Available Parts & Aftermarket Support**

- The **OM646 is a common diesel engine**, so **parts are widely available** and often affordable.

- Many independent mechanics and specialists work on this engine, reducing dependency on dealerships.

---

### **Cons**

1. **Noise Issues (Especially in the 163.520.09-23 Variant)**

- **Rattling or clunking from the valve cover or rocker arms** (common in OM646 engines).

- **Exhaust noise** (if the turbo or muffler is worn).

- **Transmission whine or hum** (especially in older automatics).

- **Pre-purchase inspection (PPI) is critical** some noises may indicate **worn components** (e.g., lifters, camshaft bearings, or turbo issues).

2. **Potential Engine Wear (OM646 Common Problems)**

- **Lifter noise** (a common issue where lifters wear out, causing a **ticking or rattling sound** often fixed with a **lifter replacement**).

- **Camshaft bearing wear** (can lead to **metal shavings in the oil**, requiring a **full engine rebuild** if severe).

- **Turbocharger failure** (if not maintained properly, leading to **loss of power and increased noise**).

- **Injector issues** (some OM646 engines suffer from **fouled or failing injectors**, causing rough idling or misfires).

3. **High Maintenance Costs**

- **Diesel-specific repairs** (e.g., **DPF, EGR, or turbo work**) can be **expensive**.

- **Oil changes should be done every 5,000 7,500 miles** (diesel engines require **synthetic oil and proper filtration**).

- **Dealership labor rates** are high, making independent mechanics a better (and often cheaper) option.

4. **DPF & EGR Problems (Modern Diesel Concerns)**

- **Reduce fuel efficiency** if clogged.

- Require **professional cleaning or replacement** (costly).

- **Short trips can cause DPF clogging**, making this model less ideal for **city driving**.

5. **Transmission Issues (5-Speed Automatic)**

- Some owners report **rough shifting, delayed engagement, or whining noises** in the **5G-Tronic transmission**.

- **Fluid changes are essential** neglect can lead to **premature failure**.

6. **Electrical & Sensor Failures**

- Like many Mercedes, this model can suffer from **faulty sensors (e.g., MAF, crankshaft position sensor)** leading to **check engine lights and drivability issues**.

- **Infotainment glitches** (especially in older models) can be frustrating.

7. **Rust & Body Issues (Especially in Older Examples)**

- **W204 C-Classes from 2007 2010** may have **rust in wheel wells, rocker panels, or undercarriage** if not stored properly.

- **Paint quality** can degrade over time, leading to **chipping and corrosion**.

---

### **Conclusion**

The **Mercedes-Benz W204 C-Class (163.520.09-23) with noise issues** is a **capable diesel-powered car** that offers **good fuel efficiency, durability, and luxury** but **only if properly maintained and inspected**. The **noise problems** (especially **lifter noise, turbo issues, or transmission whine**) are the **biggest red flags**, and they **must be thoroughly checked before purchase**.

If the noise is **minor (e.g., normal engine hum)** and the **engine passes a compression test with no metal in the oil**, this could be a **great buy**. However, if the noise is **loud, persistent, or accompanied by rough idling, smoke, or poor performance**, it may indicate **expensive repairs** (e.g., **camshaft rebuild, turbo replacement, or transmission work**).

---

### **Recommendation**

1. **Get a Full Pre-Purchase Inspection (PPI)**

- **Engine noise** (listen for lifter, camshaft, or turbo issues).

- **Compression test** (to rule out internal engine wear).

- **Oil condition** (look for **metal shavings**, which indicate bearing failure).

- **Transmission fluid** (should be **clean and properly leveled**).

- **DPF & EGR system** (if applicable).

- **Suspension & steering** (for rust or wear).

2. **Budget for Potential Repairs**

- **Lifter replacement** ( $800 $1,500).

- **Camshaft bearing replacement** ( $2,000 $3,500).

- **Turbo upgrade/replacement** ( $1,500 $3,000).

- **Transmission fluid change & inspection** ( $300 $600).

- **DPF cleaning/replacement** ( $500 $1,500).

3. **Consider a Lower-Mileage Example**

- **Under 80,000 miles** is ideal for this engine.

- **Avoid high-mileage diesels without full service records** (especially if they ve been driven on **short trips frequently**).

4. **Alternative Options**

- A **gasoline W204 C-Class** (less noisy, but worse fuel economy).

- A **used BMW 335d or Audi A4 TDI** (similar diesel reliability but different noise characteristics).

- A **newer diesel (e.g., W205 C-Class with OM654)** if you want **modern emissions compliance**.

5. **Final Verdict: Worth It If **

- The **noise is minor and not indicative of major engine wear**.

- The **seller provides full service records** (especially **oil changes, turbo maintenance, and transmission service**).

- You re **prepared for potential repairs** and can **budget $2,000 $5,000 for maintenance** in the first year.

- You **prioritize fuel efficiency and long-term durability** over absolute silence.

**If the noise is severe or accompanied by other issues, walk away this could turn into a costly project.** Otherwise, with **proper inspection and maintenance, this can be a great diesel Mercedes.**

Details:

Parts must be resalable and in the original packaging. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Electrical parts are not returnable.

part #: 1635200923 prices

• $243.75-$274.95

specifications ocoosys:

• for makes: Mercedes
• mpn: 163-520-09-23
• parts included: Only Part Reference 5 On The Diagram Is Included
• manufacturer warranty: 1 Year
• genuine oem: Yes
• replaces part number: 1635200023, 1635200823
• universal fitment: Direct Replacement

returns ocoosys:

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

offer ocoosys:

• availability: In Stock
• quantity: 2
• sold: 0
• started: May 27, 2026
• options: Ship-to-home

seller ocoosys:

• # reviews: 6213
• rating: 99.7%
• city: Warwick, Rhode Island

shipping ocoosys:

• class: Standard, Expedited, One-day
• service: FedEx Ground / FedEx Home Delivery, FedEx 2Day, FedEx Standard Overnight
• cost: $0.00
• carrier: FedEx
• transit: 3-8 Days
• type: Fixed

general ocoosys:

• condition: New
• Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components

payments ocoosys:

• credit card: Visa
• other
• wallet: Paypal

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