AUDI 07L101AF Fsi Crankshaft Bxa Bsm 5.2 V10

( Manufacturer Part Number: 07L101AF ), ( Part Type: Crankshaft ), ( Items Included: Crankshaft, Diamond Washer, Bolt ), ( Material: Cast Iron ), ( Vintage Part: No ), ( California Prop 65 Warning: Yes ), ( Herstellernummer: 07l101af, 07l 101 Af ), ( Oe/oem Referenznummer N : S6, S8, 5, 2 Fsi, 5.2 Fsi, Bxa, Bsm, Crankshaft ), ( Finish: Polished ), ( Country Of Origin: Germany )

Review AUDI Oem 5.2 Fsi V10 Crankshaft Bxa Bsm fits S6 S8

The **Audi 07L101AF S6/S8 5.2L FSI V10 Crankshaft (BXA/BSM)** is a high-performance, precision-engineered component designed exclusively for Audi s legendary 5.2-liter Twin-Turbocharged V10 engine, found in the S6 (C7) and S8 (4K) models. This crankshaft is a critical part of the engine s drivetrain, crafted from high-grade forged steel to ensure exceptional durability, strength, and resistance to torsional stress under extreme power outputs often exceeding 600 horsepower in tuned applications. The **BXA (B5)** and **BSM (B6)** variants cater to both the naturally aspirated and turbocharged iterations of the V10, with subtle differences in counterweight design and journal dimensions to optimize balance and reduce vibration, even at high RPMs. Engineered with **five main bearings** and **eight counterweights**, this crankshaft is machined to Audi s exacting tolerances, featuring **nitrided or induction-hardened journals** for enhanced wear resistance and longevity, particularly in high-performance or modified setups where oil flow and lubrication demands are intensified. The **BXA** version, associated with the earlier S6 (C7) models, may exhibit slight variations in counterweight positioning compared to the **BSM** iteration, which aligns with the S8 s (4K) refined power delivery and torque characteristics. Whether installed in a stock application or a heavily modified engine, this crankshaft is a cornerstone of reliability, designed to withstand the relentless forces of forced induction, aggressive camshaft profiles, and high-revving scenarios without compromising structural integrity. For enthusiasts seeking to preserve or restore their Audi s legendary V10 performance, this crankshaft serves as an essential upgrade, ensuring seamless operation and the potential for even greater power extraction when paired with supporting components like forged connecting rods, upgraded pistons, and a robust oil delivery system.

### **Pros and Cons of Buying a Used Audi S6/S8 (07L101AF, 5.2L FSI V10, Bxa, BSM)**

#### **Overview**

The **Audi S6/S8 (07L101AF)** from the **2006 2010** generation, powered by the **5.2L FSI V10 (Bxa)**, is a high-performance, luxury grand tourer with a strong following among Audi enthusiasts. The **BSM (Brake System Monitoring)** system is a standard feature, enhancing safety. Below is a detailed breakdown of its strengths and weaknesses.

---

### **Pros**

1. **Exceptional Performance**

- The **5.2L FSI V10** produces **450 500 HP** (depending on tuning) and **450 500 lb-ft of torque**, making it one of the most powerful naturally aspirated V10s ever built.

- **0-60 mph in 4.5 5.0 seconds** (stock) and **under 4.0 seconds** with aftermarket upgrades.

- **Smooth, linear power delivery** with minimal turbo lag (though it is a naturally aspirated V10, it has a high-revving nature).

2. **Luxury & Comfort**

- **Premium Audi interior** with high-quality materials, leather upholstery, and advanced infotainment (if equipped with **MMI Navigation or MMI Plus**).

- **Quiet cabin** due to excellent sound insulation, making long drives comfortable.

- **Adaptive suspension (optional)** provides a smooth ride while maintaining sharp handling.

3. **Reliability (Compared to Competitors)**

- The **5.2L FSI V10 is more reliable than earlier Audi V10s** (e.g., 1999 2004 models) due to improved fuel injection, cooling, and materials.

- **Less prone to catastrophic engine failure** than some BMW M5s or Mercedes AMG V8s of the same era.

- **Transmission options** (6-speed Tiptronic or 7-speed S tronic) are robust, though the **S tronic can be finicky** with clutch issues.

4. **Aftermarket Support & Tuning Potential**

- **Extensive aftermarket support** for performance upgrades (intake, exhaust, ECU tuning, forced induction).

- **Easily modifiable** can be pushed to **600 HP** with a **turbo kit** (though this requires significant investment and maintenance).

- **Stock engine is durable** if maintained properly many reach **150,000 miles** with basic care.

5. **Driving Dynamics & Handling**

- **Precise steering** and **responsive chassis** (especially in S6/S8 Quattro models).

- **Rear-wheel-drive (S6) or all-wheel-drive (S8) options** both offer engaging driving dynamics.

- **Brake System Monitoring (BSM)** improves safety by alerting the driver to potential brake issues.

6. **Resale Value & Enthusiast Appeal**

- **Strong secondary market** due to its cult following among Audi and performance car enthusiasts.

- **Less common than BMW M5s or Mercedes AMGs**, making it a unique choice for collectors.

7. **Aesthetic & Exclusivity**

- **Iconic Audi design** with a **distinctive front grille, LED headlights (on later models), and aggressive stance**.

- **Limited production numbers** compared to mass-market luxury sedans, adding exclusivity.

---

### **Cons**

1. **High Maintenance Costs**

- **Expensive parts** (e.g., suspension, brakes, electrical components, and engine internals).

- **Specialized labor** may be required, especially for **Quattro AWD systems** or **complex electronics**.

- **Fuel injection issues** (common in FSI engines) can lead to **carbon buildup, injector failures, or fuel pump replacements** costly repairs if neglected.

2. **Fuel Economy & Running Costs**

- **Poor MPG ( 12 15 city, 16 18 highway)** due to the **large V10 displacement**.

- **High fuel consumption** means **expensive gas bills**, especially for long-distance driving.

- **Oil changes every 5,000 7,500 miles** (or as recommended) to prevent sludge buildup.

3. **Electrical & Software Quirks**

- **MMI (Multimedia Interface) system** can be **glitchy or slow**, requiring occasional resets.

- **BSM (Brake System Monitoring)** may trigger false alerts if the system detects minor brake wear.

- **Quattro AWD system** can be **fussy** some owners report **AWD light issues** or **transfer case failures** over time.

4. **Transmission Issues (S tronic)**

- The **7-speed S tronic dual-clutch transmission** is **more prone to clutch wear** than the **6-speed Tiptronic**.

- **Clutch replacements can cost $3,000 $5,000**, making it a significant expense.

- **Shift solenoids and software glitches** can cause **rough shifting or delayed engagement**.

5. **Engine Reliability Concerns (If Neglected)**

- **Carbon buildup** in intake valves is a **common issue** in FSI engines requires **professional cleaning every 60,000 80,000 miles**.

- **Rod bearing wear** can occur if **oil changes are skipped** some engines develop **knocking noises** at high RPM.

- **Water pump failures** (common in Audi V10s) can lead to **engine overheating** requires **regular coolant system checks**.

6. **Rust & Bodywork Issues**

- **Early models (2006 2007) are prone to rust** in wheel wells, rocker panels, and undercarriage.

- **Later models (2008 ) have improved corrosion resistance**, but **salt damage** is still a concern in snowy regions.

- **Paint delamination** can occur if the car was not stored properly.

7. **Depreciation & Financing Challenges**

- **High purchase price** (used S6/S8s in good condition can cost **$30,000 $60,000 **).

- **Financing may be difficult** due to **perceived maintenance costs** some lenders charge higher interest rates.

- **Insurance premiums** are **expensive** compared to non-luxury performance cars.

8. **Noise & Vibration (At High RPM)**

- The **V10 revs loudly** (especially in manual models), which can be **annoying in stop-and-go traffic**.

- **Exhaust note is aggressive**, which may not appeal to all buyers.

- **Road noise** can be **noticeable at highway speeds** due to the **large engine bay and lightweight body**.

---

### **Final Conclusion & Recommendation**

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

- **Enthusiasts who prioritize performance, luxury, and driving dynamics** over daily practicality.

- **Owners who are prepared for higher maintenance costs** and can afford **regular servicing** (oil changes, carbon cleaning, suspension checks).

- **Those who enjoy tuning and modifying** their car (aftermarket support is strong).

- **Collectors or investors** who see the **long-term appreciation potential** of a well-maintained S6/S8.

- **Drivers in areas with good Audi specialists** (easier and cheaper repairs).

- **Budget-conscious buyers** running costs (fuel, maintenance, insurance) are **significantly higher** than average.

- **Those who prioritize fuel efficiency** the **V10 s thirst** makes it impractical for daily long commutes.

- **People who dislike mechanical noise** the **V10 s revving and exhaust note** are **loud and distinctive**.

- **First-time luxury car owners** the **complexity of Audi s electronics and AWD system** can be overwhelming.

- **Buyers in harsh climates** (e.g., extreme cold/salt regions) without **proactive rust prevention**.

#### **Best Approach to Buying Used**

1. **Get a Pre-Purchase Inspection (PPI)** from a **trusted Audi specialist** critical for identifying **hidden issues** (carbon buildup, rod knock, transmission wear).

2. **Check maintenance records** look for **regular oil changes, carbon cleaning, and suspension servicing**.

3. **Test the MMI system** ensure **no major glitches** in navigation, climate control, or BSM.

4. **Inspect the AWD system** (if Quattro) for **leaks, fluid condition, and proper engagement**.

5. **Verify fuel injection health** listen for **misfire codes** or **rough idle** (signs of bad injectors).

6. **Budget for immediate repairs** expect **$2,000 $5,

Details:

Normal cosmetic wear consistent with mileage and age. Engine Codes: BXA. No cracks or structural damage. Vehicle Fitment: Audi.

Buyer pays return shipping. 2007 2011 Audi S6 5.2L V10 FSI BXA. Fitment is based on engine code. Condition: OEM used condition.

Known for its strength and precision, this crankshaft is a critical component maintaining factory balance reliability. Includes: 1 OEM Audi 5.2 FSI V10 Crankshaft. Please review all photos carefully for exact condition. OEM Audi S6 S8 5.2 FSI V10 Engine Crankshaft BXA BSM 07L101AF:: Genuine 5.2L crankshaft removed from a factory / engine.

This crankshaft is designed for the naturally aspirated V10 found in Audi's flagship performance sedans. Ideal for engine rebuilds, performance refreshes, or OEM restorations.

part #: 07l101af price

• $299.99

specifications cranshafengin:

• for models: S6, S8
• for makes: Audi
• mpn: 07l101af
• part type: Crankshaft
• items included: Crankshaft, Diamond Washer, Bolt
• material: Cast Iron
• vintage part: No
• california prop 65 warning: Yes
• herstellernummer: 07l101af, 07l 101 Af
• oe/oem referenznummer n : S6, S8, 5, 2 Fsi, 5.2 Fsi, Bxa, Bsm, Crankshaft
• finish: Polished
• country of origin: Germany

offer cranshafengin:

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

seller cranshafengin:

• # reviews: 196
• rating: 99.3%
• city: Highland Park, Illinois

payments cranshafengin:

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

returns cranshafengin:

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

general cranshafengin:

• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
• condition: Used

shipping cranshafengin:

• carrier: UPS
• type: Calculated
• class: Standard
• service: UPS Ground
• transit: 2-5 Days
• cost: $0.00

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