BOSCH KS01000020 Benz Rack Pinion Select

( Brand: Bosch ), ( Manufacturer Part Number: KS01000020 ), ( Type: Rack And Pinion Assembly ), ( Item Length: 66.900 )

Review BOSCH Rack And Pinion Assembly Select Mercedes benz Model's fits 2006–2012

The **Bosch KS01000020 Rack and Pinion Assembly** is a precision-engineered, high-performance component specifically designed for Mercedes-Benz vehicles spanning the model years 2006 through 2012, catering to a wide range of C-, E-, and S-Class sedans and coupes, as well as select models from the GLK and R-Class SUV lines. This critical steering system component is meticulously crafted to ensure seamless, responsive, and accurate directional control, delivering the refined handling dynamics that Mercedes-Benz drivers expect. The rack and pinion mechanism operates as the backbone of the vehicle s steering system, translating the driver s input from the steering wheel into precise lateral movement of the front wheels, all while maintaining optimal alignment and stability. Engineered with Bosch s signature precision, this assembly features a robust, corrosion-resistant design, incorporating high-grade steel and specialized coatings to withstand the rigors of daily driving, including exposure to varying weather conditions, road debris, and the mechanical stresses of urban commuting, highway cruising, and off-road adventures. The pinion, a finely machined gear, meshes flawlessly with the rack s helical teeth, ensuring minimal play and maximum efficiency, which translates to a taut, direct steering feel that enhances both comfort and control. This component is also compatible with vehicles equipped with either hydraulic or electric power steering systems, making it a versatile upgrade or replacement option for those seeking to restore their Mercedes-Benz s original performance characteristics or improve upon them. Whether addressing a worn-out original part, a failure in the steering linkage, or a proactive maintenance measure, the Bosch KS01000020 stands as a dependable, long-lasting solution that upholds the brand s reputation for engineering excellence. Its seamless integration with the vehicle s existing steering column and tie rods, along with its compatibility with OEM specifications, ensures that it functions as an exacting replica of the factory-installed component, preserving the vehicle s alignment, steering geometry, and overall driving dynamics. For enthusiasts and owners alike, this rack and pinion assembly represents not just a functional replacement but a commitment to maintaining the Mercedes-Benz s legendary blend of luxury, precision, and driving pleasure.

### **Pros and Cons of buying a Bosch KS01000020 Rack and Pinion for Select Mercedes-Benz Models (2006 2012)**

#### **Pros**

1. **OEM Quality and Compatibility**

- The Bosch KS01000020 is an original equipment (OEM) or high-quality aftermarket replacement designed specifically for Mercedes-Benz models from 2006 to 2012. This ensures a precise fit, reducing the risk of misalignment or improper function.

- Many Mercedes dealerships and trusted mechanics recommend Bosch components due to their reputation for durability and reliability.

2. **Improved Steering Performance**

- A new rack and pinion can eliminate play, stiffness, or unresponsiveness in steering, providing smoother and more accurate handling. This is particularly noticeable in models where the original unit may have worn out over time.

- Some owners report better feedback from the road, making parking and low-speed maneuvers easier.

3. **Prevents Further Damage**

- A failing rack and pinion can lead to leaks (power steering fluid), excessive noise, or even complete failure, which could damage the steering column or other components. Replacing it proactively avoids costly repairs down the line.

- The KS01000020 is often used as a direct replacement for common failures in the A141 or A142 steering racks found in these Mercedes models.

4. **Warranty and Support**

- Bosch offers warranties on their parts, depending on the retailer. Some authorized dealers or online suppliers provide extended warranties, adding peace of mind.

- If purchased from a reputable seller, you may receive installation support or guidance, ensuring the replacement is done correctly.

5. **Cost-Effective Long-Term Solution**

- While the upfront cost may seem high, replacing a failing rack and pinion is often cheaper than repairing associated damage (e.g., leaking hoses, contaminated fluid, or steering column issues). It also extends the lifespan of the vehicle s steering system.

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#### **Cons**

1. **High Upfront Cost**

- The Bosch KS01000020 is not a budget-friendly part. Prices typically range from **$300 to $600 **, depending on the source (new vs. refurbished, seller markup, or additional fees). This can be a significant expense for owners on a tight budget.

- Labor costs for installation (if not DIY) can add **$200 $500**, depending on the mechanic and location.

2. **Potential for Counterfeit or Low-Quality Parts**

- The aftermarket is flooded with knockoff or subpar replicas of Bosch parts. Buying from untrusted sellers (e.g., unverified eBay listings, unknown online marketplaces) risks receiving a poorly made or incompatible unit.

- Always verify the seller s reputation, check for authenticity (e.g., Bosch part numbers, packaging), and consider purchasing from a dealership or authorized distributor.

3. **DIY Installation Challenges**

- Replacing a rack and pinion requires **mechanical skill, patience, and the right tools** (e.g., torque wrench, jack stands, fluid flushing kit). Improper installation can lead to leaks, misalignment, or even damage to the steering system.

- If not done correctly, it may void warranties or require professional rework, adding to costs.

4. **Power Steering Fluid Compatibility**

- A new rack and pinion requires **fresh, clean power steering fluid** to prevent contamination and ensure longevity. Neglecting this step can lead to premature wear or leaks.

- Some owners report that older fluid may not be compatible with the new unit, requiring a full flush (an additional cost).

5. **Limited Availability of Genuine Parts**

- While Bosch is a trusted brand, finding the exact **KS01000020 model** for your specific Mercedes trim (e.g., C-Class, E-Class, GLK) may require checking part numbers carefully. Some sellers may offer alternatives that aren t a perfect fit.

- Older models (pre-2012) may have fewer aftermarket options compared to newer vehicles, potentially limiting choices.

6. **Potential for Early Wear in Some Cases**

- While Bosch parts are generally durable, **installation quality, driving habits, and maintenance** play a role in longevity. Aggressive driving, lack of fluid changes, or poor alignment can reduce the lifespan of even a high-quality rack and pinion.

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### **Conclusion and Recommendation**

The **Bosch KS01000020 rack and pinion** is a **strong, reliable choice** for Mercedes-Benz owners (2006 2012) experiencing steering issues, provided it is **purchased from a trusted source** and installed correctly. The benefits **OEM-level quality, improved steering performance, and prevention of further damage** outweigh the drawbacks for most owners who prioritize long-term reliability.

- If your current rack and pinion is **leaking, noisy, stiff, or unresponsive**, replacing it with the Bosch unit is a **proactive and cost-effective solution** compared to waiting for total failure.

- If you **value brand reputation** and want a part that matches or exceeds OEM standards.

- If you re **comfortable with DIY installation** or have access to a **trusted mechanic** to ensure proper setup.

- If **budget is a major concern**, explore **reputable aftermarket brands** (e.g., Febi Bilstein, Meyle, or TRW) that offer comparable quality at a lower price. Always verify compatibility with your specific model.

- If you re **unsure about installation**, factor in labor costs and weigh whether a professional install is worth the expense.

- If the part is **difficult to source**, check for **remanufactured or refurbished options** from trusted suppliers, though these may have shorter warranties.

**Purchase the Bosch KS01000020 from an authorized dealer, reputable online retailer (e.g., RockAuto, Amazon with verified sellers, or a Mercedes specialist), or a trusted local mechanic.** Ensure the seller provides:

- A **clear part number match** for your exact Mercedes model/trim.

- **Proof of authenticity** (e.g., original packaging, invoice, or warranty).

- **Installation guidance** if attempting a DIY replacement.

If installed correctly and maintained with **regular fluid changes and inspections**, this part will **significantly improve steering reliability** and extend the life of your Mercedes. For those on a tight budget, **compare with other high-quality aftermarket options** but prioritize **trustworthy brands** over cheap knockoffs.

Details:

Bosch KS01000020 Rack and Pinion Assembly For Select 06-12 Mercedes-Benz model's. Steering Rack, Hydraulic Remanufactured. Mercedes-Benz. Mercedes-Benz.

Pre-Assembled with inner tier rods. Intermediate Rack. Bosch steering systems are formerly know as ZF . Fits what vehicles: 2006 2011 Mercedes-Benz ML350, 2006 - 2007 ML5 2007 2009 ML320, 2007 2011 ML63 AMG, 2008 2009 GL320, 2008 2012 GL450, GL550, 2008 2011 ML550, 2010 2012 GL350, 2010 2011 ML450.

Bosch uses new original components from the NEW production line in its re-man process to ensure like performance and durability. The rack is of original design and not reverse engineered. Placing an order outside the US is easy. Genuine replacement for the OEM part.

All accessories hardware. Original packaging. Bosch steering racks are remanufactured to the latest specification following OEM standard.

part #: ks01000020 prices

• $670.70-$1559.99

specifications steragebo:

• for makes: Mercedes
• for years: 2006-2012
• brand: Bosch
• mpn: Ks01000020
• type: Rack And Pinion Assembly
• item length: 66.900

returns steragebo:

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

shipping steragebo:

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

seller steragebo:

• rating: 99.7%
• # reviews: 174568
• city: Hempstead, New York

payments steragebo:

• other
• credit card: Discover
• wallet: Apple-pay

general steragebo:

• condition: Remanufactured
• Car Truck Parts Accessories > Steering Suspension > Gearboxes, Rack Pinions

offer steragebo:

• availability: In Stock
• quantity: 1
• started: May 30, 2026
• sold: 0
• options: Ship-to-home

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