BMW 7834576 Engine Right Vanos Timing

( Manufacturer Part Number: 7834576 ), ( Type: Vanos ), ( Fitment Type: Direct Replacement ), ( Material: Aluminum ), ( Country Of Origin: Germany )

Review BMW Engine Right Vanos Variable Timing Oem fits M5 M6 E60 E63 E64 S85 2006–2010

The **BMW 7834576** is a critical high-performance component designed exclusively for the **N63 and N63T1** inline-six turbocharged engines found in the **E60 550i, E63 650i, and E64 750i** models produced between **2006 and 2010**, as well as the legendary **E60/E63 M5 (S85)** and **E64 M6 (S85)** variants. This **right-side Vanos timing chain tensioner and oil pump drive gear assembly** plays a pivotal role in maintaining precise engine timing, optimal oil circulation, and overall drivetrain reliability critical factors for both daily driving and high-performance applications.

Engineered to exacting BMW specifications, this **7834576 timing chain tensioner** is a **hydraulically actuated, single-use component** that ensures proper tension on the **Vanos (Variable Camshaft Timing) timing chain**, preventing slack or excessive wear that could lead to catastrophic failure. The tensioner integrates seamlessly with the **N63 s dual-turbocharged architecture**, where precise camshaft phasing is essential for maximizing power delivery, torque response, and fuel efficiency. For the **M5 and M6 (S85)**, where the engine produces **503 510 hp (E60) and 525 530 hp (E64)**, this component is particularly vital, as the aggressive power output demands flawless timing chain operation to avoid misfires, oil starvation, or even catastrophic chain stretch.

Complementing the tensioner is the **integrated oil pump drive gear**, which is directly linked to the **crankshaft pulley** via the timing chain system. This gear ensures consistent oil pressure and flow to critical engine components, including the **high-pressure fuel injectors, turbochargers, and Vanos actuators**, all of which rely on precise lubrication to function under the extreme stress of forced induction. The **N63 s oil pump** is a **gerotor-type design**, and its proper engagement with the timing chain is essential for maintaining optimal pressure especially under heavy loads, where the **M5 s 6,000 rpm redline** or the **650i s turbocharged boost pressures** push the engine to its limits.

This **7834576 assembly** is manufactured to **OEM-grade tolerances**, featuring **high-strength steel construction** and **precision-machined components** to withstand the **high RPMs, turbo lag, and thermal cycling** inherent in BMW s high-performance engines. Unlike aftermarket alternatives, this part is **direct-fit**, ensuring compatibility with the **E60/E63/E64 s timing cover and chain tensioner bracket**, reducing the risk of improper installation or premature failure. The **Vanos system itself** a BMW innovation adjusts camshaft timing dynamically to optimize power delivery, and this tensioner is a linchpin in that process, preventing chain slippage that could disrupt the system s functionality.

For **restoration, high-mileage rebuilds, or performance upgrades**, replacing this component is a **recommended maintenance step**, as the **timing chain tensioner is a wear item** that may eventually lose its hydraulic effectiveness, leading to **chain slack, increased noise, or even chain jump** a scenario that could result in **valve-to-piston contact**, a catastrophic failure mode. The **N63 s timing chain system** is a **single-use design**, meaning that once the tensioner and related components (such as the **timing chain, sprockets, and oil pump drive gear**) are removed, they should be replaced as a set to ensure longevity and reliability.

Whether installed in a **daily-driven 650i, a track-focused M5, or a modified high-performance variant**, this **7834576 timing chain tensioner and oil pump drive gear assembly** is a **must-have replacement part** for maintaining the **N63 s legendary reliability and power output**. Its precise engineering ensures that the **Vanos system operates flawlessly**, the **oil pump delivers consistent pressure**, and the **timing chain remains taut under all operating conditions**, making it an indispensable component for any BMW enthusiast seeking to preserve or enhance the performance of their **E60/E63/E64 high-performance engine**.

### **Pros and Cons of Buying a BMW E60/E63/E64 (06-10) with the S85 Engine (M5/M6 Models, Right Vanos, Timing Chain)**

#### **Pros**

1. **Exceptional Performance**

The S85 engine (6.0L V12 for M5/M6) is one of BMW s most powerful naturally aspirated engines from that era, producing **507-550 hp** and **553-563 lb-ft** of torque. It delivers thrilling acceleration, smooth power delivery, and a deep, resonant exhaust note that enthusiasts love.

2. **Timing Chain (Not Belt) Advantage**

Unlike many engines that use belts, the S85 uses a **timing chain**, which eliminates the risk of catastrophic failure from a snapped belt. While chains can stretch over time, they are generally more durable than belts and don t require replacement as frequently.

3. **Right Vanos (Variable Valve Timing)**

The **Right Vanos** system adjusts intake valve timing for better low-end torque and throttle response. This improves drivability and makes the engine feel more refined than earlier S85 variants without it.

4. **Proven Reliability (With Proper Maintenance)**

The S85 is a robust engine when maintained correctly. Common issues like oil leaks (valve cover, oil filter housing) and minor timing chain stretch can be managed with regular servicing. Many examples with **under 100,000 miles** run flawlessly.

5. **High Resale Value & Prestige**

BMW s M models (especially the M5 and M6) hold their value exceptionally well compared to most luxury cars. The S85-powered variants are highly sought after, making them a strong investment if you plan to sell later.

6. **Manual Transmission Option (E60 M5)**

The **E60 M5 (06-08)** was available with a **6-speed manual**, which is rare in modern luxury cars. If you prefer driving a manual, this is one of the last true driver s cars from BMW.

7. **Aftermarket & Tuning Potential**

The S85 is a favorite for tuning, with aftermarket support for **forced induction (turbo/blower), fuel upgrades, and exhaust modifications**. Companies like **BMW M Performance, JE, and MHD** offer high-quality parts and builds.

8. **Classic Luxury & Build Quality**

The E60/E63/E64 generation represents the peak of BMW s **pre-F1** luxury sedan design sleek, comfortable, and packed with high-end features like **wood/aluminum trim, heated seats, and advanced infotainment**.

9. **Lower Running Costs (Compared to Modern Hybrids/EVs)**

While fuel economy is poor ( 12-15 MPG combined), the cost of **premium fuel, oil changes, and maintenance** is still far cheaper than running a modern hybrid or electric vehicle.

10. **Driving Experience & Handling**

The M5 and M6 models feature **adaptive suspension, quadralink differential, and precise steering**, making them some of the best-handling grand touring cars of their time. The **E63 Coupe** is particularly nimble for its size.

---

#### **Cons**

1. **High Maintenance Costs**

- **Oil leaks** (valve cover gasket, oil filter housing gasket, rear main seal) are common and require **specialized knowledge** to fix properly.

- **Timing chain stretch** can occur over **100,000 miles**, leading to **valve float and reduced performance**. Some owners replace it around **120,000-150,000 miles**.

- **Carbon buildup** in the intake valves (common in high-mileage examples) can reduce performance and require **professional cleaning**.

- **Suspension wear** (struts, bushings, control arms) is inevitable in high-mileage examples.

2. **Poor Fuel Economy**

The S85 is a **thirsty engine**, consuming **premium fuel (91 octane)** at a rate of ** 12-15 MPG combined**. This adds up to **high running costs** over time.

3. **Weight & Size**

The E60/E63/E64 models are **heavy (4,000 lbs)** and **long**, making them less nimble than smaller sports sedans. The **E64 Wagon** is particularly unwieldy in tight spaces.

4. **Electrical & Infotainment Issues**

- Early **iDrive systems (2006-2008)** can be **glitchy and slow**, requiring occasional resets.

- **Power window/door lock failures** are common due to **corrosion or electrical gremlins**.

- **Heated seats and other luxury features** may degrade over time.

5. **Rust & Body Corrosion (Especially in Snowy Climates)**

The **E60/E63/E64** was prone to **rust in wheel wells, rocker panels, and undercarriage**, particularly in areas with **salted roads**. A **rust inspection** is essential before purchase.

6. **High Insurance Costs**

Due to their **high value and performance**, M5/M6 models carry **expensive insurance premiums**, sometimes **2-3x higher** than a standard BMW sedan.

7. **Depreciation (Despite Good Resale Value)**

While the S85 models hold value well, they still **lose 10-15% per year** in the used market. If you plan to keep it long-term, this is less of an issue.

8. **Limited Modern Safety Features**

- **No standard lane-keeping assist, automatic emergency braking, or advanced driver aids** (common in newer BMWs).

- **Rear visibility is poor** due to the large size and lack of modern camera systems.

9. **Noise & Vibration (Especially in Older Examples)**

- **Exhaust noise** can be **loud and intrusive** in some builds.

- **Engine mounts wear out**, leading to **excessive vibration** at highway speeds.

- **Wind noise** is noticeable at high speeds due to the **aerodynamic design**.

10. **Parts & Labor Costs**

- **BMW dealership labor rates** are **high** (often **$120-$150/hour**).

- **Aftermarket parts** (especially for suspension, exhaust, and electrical) can be **expensive** if not sourced carefully.

- **Timing chain replacement** (if needed) can cost **$2,000-$4,000 ** depending on labor.

---

### **Conclusion & Recommendation**

#### **Who Should Buy This Car?**

**Enthusiasts who prioritize driving dynamics and raw power** If you love **V12 roaring, manual transmission, and M-car pedigree**, the S85 is a dream machine.

**Those who appreciate classic luxury with modern tech** The **E60/E63/E64** is one of the last **true grand tourers** before BMW shifted toward SUVs.

**Investors looking for a high-value used luxury car** The **M5 and M6 hold value exceptionally well**, making them a smart long-term purchase.

**Owners willing to maintain it properly** If you **budget for oil leaks, suspension work, and potential timing chain service**, this car will reward you with **decades of enjoyment**.

**People who enjoy tuning and modifying** The **S85 is one of the most tuner-friendly BMW engines ever made**.

#### **Who Should Avoid This Car?**

**Those who want fuel efficiency or low running costs** The **high fuel consumption and maintenance needs** make it impractical for daily driving.

**People who dislike high insurance or maintenance bills** **$2,000 per year in insurance $1,000 in annual maintenance** is not for everyone.

**Buyers who want modern safety or tech features** **No lane assist, poor rear visibility, and outdated infotainment** are dealbreakers for some.

**Those who prefer smaller, more agile cars** The **E60/E64 is heavy and unwieldy** compared to modern sports sedans.

**People who don t enjoy mechanical work** **Oil leaks, timing chain stretch, and electrical gremlins** require **attention and sometimes DIY skills**.

---

### **Final Recommendation**

- You **love BMW s M brand** and want a **last true V12 grand tourer**.

- You re **prepared for maintenance costs** and can **budget for potential timing chain work**.

- You **enjoy driving a heavy, powerful car** and don t mind **high insurance**.

- You **plan to keep it long-term** (5 years) and **appreciate its resale value**.

- You **need a practical, low-cost daily driver**.

- You **can t handle mechanical issues** or **don

Details:

Body: 2 Door Coupe. All parts have been inspected and tested. Interior Color: Leather Merino Schwartz. Mileage: 96,489 Miles.

Model: BMW M6. There is no charge for picking up orders. Drive: Rear Wheel Drive. 06-10 BMW M5 M6 E60 E63 E64 S85 Engine Right Vanos Variable Timing 7834576 OEM, DONOR CAR.

Transmission: Manual SMG.

part #: 7834576 prices

• $279.99-$7000.00

specifications cylinderheapar:

• for models: M5, M6, E60, E63, E64, S85
• for makes: Bmw
• for years: 2006-2010
• mpn: 7834576
• type: Vanos
• fitment type: Direct Replacement
• material: Aluminum
• country of origin: Germany

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

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• rating: 99.4%
• # reviews: 1168
• city: Pompano Beach, Florida

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• transit: 4-11 Days
• cost: $0.00
• class: Standard
• service: UPS Ground
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offer cylinderheapar:

• quantity: 1
• options: Ship-to-home
• sold: 0
• started: June 11, 2026
• availability: In Stock
• best offers: True

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

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