BMW 871447411 Rear Suspension Rack Pinion Steering Axle Shaft
fits model: 750li, 750i. make: Bmw. year: 2009–2015.
( Manufacturer Part Number: 871447411 ), ( Item Diameter: Interior ), ( Input Shaft Length: Oem ), ( Vintage Part: No ), ( Type: Rack Pinion ), ( Ipn: 09-15 ), ( Manufacturer Warranty: 3 Months ), ( Country Of Origin: Germany )
Review BMW Rear Suspension Rack Pinion Steering Axle Shaft Oem fits 750LI 750I 2009–2015
The **BMW 871447411** is a high-performance, precision-engineered rear suspension rack pinion and steering axle shaft assembly designed exclusively for the **2009 2015 BMW 750Li and 750i** models, ensuring seamless integration with the vehicle s advanced suspension and steering systems. This critical component plays a pivotal role in maintaining optimal handling, alignment, and directional stability, particularly in luxury sedans that demand both refinement and responsiveness. Crafted from durable, high-grade materials, the pinion steering shaft features a robust construction that resists wear and deformation, even under the demanding loads associated with high-end BMW engineering. The rack pinion itself is meticulously machined to ensure smooth, precise engagement with the steering rack, minimizing play and maximizing efficiency, which is essential for the 750i s sport-tuned suspension and the 750Li s plush yet controlled ride quality. This assembly is a direct replacement for the original equipment manufacturer (OEM) part, adhering to BMW s exact specifications to guarantee a perfect fit, whether installed during routine maintenance or as part of a suspension upgrade. Ideal for enthusiasts seeking to restore factory performance or mechanics performing thorough rebuilds, this component is a testament to BMW s commitment to engineering excellence, delivering both reliability and the subtle nuances of steering feedback that define the driving experience of these iconic luxury vehicles. Proper installation requires adherence to torque specifications and alignment procedures to ensure longevity and optimal performance.
**Pros and Cons of Buying a 2009-2015 BMW 750Li/750i with the Specified Suspension and Steering Components**
### **Pros**
1. **Luxury and Comfort**
The BMW 7 Series (750Li/750i) is renowned for its opulent interior, premium materials, and refined ride quality. The cabin is spacious, well-insulated from road noise, and equipped with high-end features like leather upholstery, wood/aluminum trim, and advanced infotainment systems (depending on the trim). The rear-wheel-drive layout and adaptive suspension (if equipped) provide a smooth, composed ride, making it ideal for long-distance travel and urban comfort.
2. **Performance and Power**
The 750i/750Li is powered by BMW s twin-turbocharged V12 (750i) or V8 (750Li) engines, delivering strong performance around 500 600 horsepower paired with an 8-speed automatic transmission. The V12 model, in particular, offers exhilarating acceleration and a deep, resonant exhaust note. The rear-wheel-drive configuration provides engaging handling, though it may feel less stable at high speeds compared to all-wheel drive.
3. **Reliability of Core Components**
The suspension rack, pinion steering, and axle shaft you ve listed are critical but relatively durable components in BMWs of this era. The **rack and pinion steering** (part of the steering system) is robust if well-maintained, though wear over 10 15 years could be a concern. The **rear axle shaft** (half-shaft) is also a durable part, but it can fail catastrophically if it develops a crack or bend, leading to a loss of power to one rear wheel. The 7 Series suspension (adaptive or passive) is generally reliable, though bushings and struts may require replacement over time.
4. **Resale Value and Prestige**
The BMW 7 Series holds its value better than many luxury sedans, especially the V12 models. It carries significant prestige, appealing to buyers who prioritize brand status and exclusivity. The 750i/750Li is a statement car, often commanding higher prices in the used market compared to similar-sized sedans.
5. **Customization and Upgrade Potential**
The 7 Series has a strong aftermarket presence, allowing for upgrades to suspension (e.g., coilovers, lower springs), exhaust systems, and performance tuning. The open architecture of the V12/V8 engines also makes them amenable to tuning for increased power. The interior can be refreshed with aftermarket leather, wood, or tech upgrades.
6. **Safety Features**
Later-model 7 Series (2012 2015) often come with advanced safety tech like **iDrive navigation, blind-spot monitoring, lane departure warning, and adaptive cruise control**. The rigid chassis and high-quality materials contribute to structural integrity in a crash.
7. **Low-Mileage Examples Available**
If you re targeting a well-maintained example with low miles (under 50,000 70,000), you may find a 750i/750Li in excellent condition, especially if it has a service history. Some owners keep these cars in pristine shape due to their status as collector vehicles.
---
### **Cons**
1. **High Maintenance Costs**
BMWs, especially luxury models like the 7 Series, are expensive to maintain. Routine services (oil changes, brake jobs, suspension work) cost significantly more than on Japanese or American luxury brands. The V12 engine, in particular, requires high-quality fuel and may develop carbon buildup or turbo issues over time. Common wear items like **suspension bushings, struts, and control arms** can add up quickly.
2. **Complexity and Repair Challenges**
The 7 Series advanced systems (adaptive suspension, iDrive, hybrid components in some models) can be difficult and costly to repair. Dealership labor rates are high, and finding qualified independent mechanics can be difficult. The **steering rack and pinion** can leak power steering fluid or develop play over time, requiring replacement (a costly part). The **rear axle shafts** are critical if one fails, it can cause a sudden loss of power to one wheel, potentially leading to a dangerous situation.
3. **Fuel Economy**
The 750i/750Li is a thirsty car, averaging **12 15 MPG combined** (city/highway). With fuel prices fluctuating, this can add up to significant annual costs, especially for long commutes or frequent highway driving.
4. **Suspension and Handling Wear**
While the 7 Series is comfortable, its suspension is not designed for aggressive driving. Over time, **bushings, shocks, and struts** wear out, leading to a harsher ride or poor handling. The **adaptive suspension** (if equipped) can fail or require recalibration, further increasing costs.
5. **Electrical and Software Issues**
The iDrive system, infotainment, and various electronics can be finicky. Glitches, screen freezes, or software incompatibilities are common, and repairs often require dealer intervention. The **steering column and sensors** can also develop issues, affecting precision or causing warning lights.
6. **Depreciation**
While the 7 Series holds value better than many luxury cars, it still depreciates significantly over time. A new 750i/750Li loses a substantial portion of its value in the first few years. If you plan to keep it long-term, this may not be a major concern, but if you re considering it as a short-term purchase, factor in resale value.
7. **Potential for Hidden Issues**
Without a thorough inspection, you may inherit **hidden problems** such as:- **Engine carbon buildup** (common in turbocharged BMWs, reducing power and efficiency).
- **Transmission wear** (the 8-speed ZF automatic is generally reliable but can develop shifting issues over time).
- **Exhaust leaks or turbocharger failures** (especially in the V12, which is more complex).
- **Water leaks** (common in the 7 Series, leading to electrical or interior damage).
- **Rust** (especially in older models or those from snowy climates).
8. **Insurance Costs**
The 750i/750Li is a high-value target for theft and a high-risk car to insure. Premiums will be significantly higher than for a comparable non-luxury sedan, particularly for younger or inexperienced drivers.
9. **Limited Practicality**
While spacious, the 7 Series is a heavy, long car (around 6,000 lbs) that can be cumbersome to maneuver in tight spaces. Parking and city driving may be less convenient than in a smaller luxury sedan.
10. **Environmental Concerns**
The V12 and V8 engines are not fuel-efficient, and the 7 Series is not ideal for eco-conscious buyers. If you prioritize hybrid or electric options, this car is not the most sustainable choice.
---
### **Key Considerations Before Buying**
1. **Service History**
A well-documented service history is critical. Look for:- Regular oil changes (BMW recommends synthetic oil changes every 10,000 15,000 miles).
- Timely suspension and brake maintenance.
- No history of major engine or transmission issues.
- Proof of timely iDrive updates (if applicable).
2. **Inspection by a BMW Specialist**
Have a trusted mechanic or BMW specialist inspect the **steering rack, pinion, axle shafts, suspension components, and engine bay**. Pay special attention to:
- **Steering rack leaks or play** (could indicate internal wear).
- **Axle shaft condition** (listen for clunks or vibrations at high speeds).
- **Suspension bushings and struts** (excessive wear can affect handling).
- **Turbocharger and intercooler** (common failure points in BMWs).
- **Transmission fluid condition** (burnt or low fluid can indicate problems).
3. **Test Drive Focus Areas**
- **Steering feel**: Should be precise with no excessive play or vibration.
- **Braking**: Listen for squeaks or grinding (could indicate worn pads or rotors).
- **Acceleration**: The car should pull strongly without hesitation (listen for turbo lag or exhaust backpressure).
- **Ride quality**: No excessive bouncing or clunks over bumps (indicates worn suspension).
- **Electronics**: Test all iDrive functions, climate control, and warning lights.
4. **Budget for Repairs**
Set aside **at least 10 15% of the car s purchase price** for unexpected repairs in the first year. Common early issues to budget for:- **Suspension refresh** ($2,000 $4,000).
- **Brake system overhaul** ($1,500 $3,000).
- **Steering rack replacement** ($1,500 $3,000).
- **Transmission fluid flush** ($500 $1,0
Details:
Please match part number to ensure fitment. This part may fit one or all of the described vehicles. As a result of it being used part, the item may show light scuffs, scratches, or other imperfections. All of the parts are tested either before or after removal from vehicle.
Shipping prices for ground apply only to the continental states of USA. Fitment and Compatibility.
part #: 871447411 prices
- $300.00-$434.69
specifications steragebo:
- for models: 750li, 750i
- for makes: Bmw
- for years: 2009-2015
- mpn: 871447411
- item diameter: Interior
- input shaft length: Oem
- vintage part: No
- type: Rack Pinion
- ipn: 09-15
- manufacturer warranty: 3 Months
- country of origin: Germany
seller steragebo:
- rating: 99.7%
- # reviews: 1688
- city: Yuba City, California
shipping steragebo:
- type: Fixed
- cost: $80.00
- class: Standard
- carrier: FedEx
- transit: 4-7 Days
- service: FedEx Ground / FedEx Home Delivery
payments steragebo:
- credit card: Diners-club
- wallet: Paypal
- other
offer steragebo:
- options: Ship-to-home
- started: June 5, 2026
- quantity: 1
- best offers: True
- availability: In Stock
- sold: 0
returns steragebo:
- paid by: Buyer
- time: 30 Days
- policy: Returns Accepted
general steragebo:
- condition: Used
- Car Truck Parts Accessories > Steering Suspension > Gearboxes, Rack Pinions
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