AUDI 4M0501055E Rear Steering Gear Rack 551-11121

( Manufacturer Part Number: 4M0501055E ), ( Ipn: 551-11121 ), ( Year: 2018 ), ( Storage Location: Ru2a01 ), ( Body Style: Suv ), ( Interior Color: Black/ Moon Silver ), ( Engine: 3.0l / Crec ), ( Transmission: 8spd A.t. / Sup ), ( Oe/oem Part Number: 4m0-501-055-e; 4m0 501 055 E ), ( Country Of Origin: Germany ), ( Type: Steering Gear ), ( Vehicle Color: Deep Black )

Review AUDI Rear Steering Gear Rack Oem fits Q7 2017–2019

The **Audi 4M0501055E Rear Steering Gear Rack** (compatible with the **2017 2019 Audi Q7**) is a precision-engineered component designed to deliver seamless, responsive steering performance while maintaining the hallmark precision and durability expected from Audi s luxury SUV lineup. This high-quality steering rack, manufactured to Audi s exact specifications, ensures smooth, low-noise operation and optimal alignment, contributing to both comfort and handling. Constructed from robust materials, including reinforced steel and corrosion-resistant coatings, it is built to withstand the demands of daily driving, urban commuting, and occasional off-road adventures, all while maintaining structural integrity over the long term. The rack features a **rack-and-pinion mechanism**, offering superior steering feel and efficiency compared to traditional recirculating-ball systems, allowing for tighter turning radii and more precise control ideal for navigating tight parking spaces or winding roads with confidence. Its integration with the vehicle s electronic stability control (ESC) and traction management systems further enhances safety by providing real-time adjustments to steering dynamics. Whether fitted during routine maintenance or as part of a full suspension refresh, this steering rack ensures that the Q7 retains its signature blend of luxury, performance, and reliability, making it a critical component for maintaining the vehicle s intended driving experience.

### **Pros and Cons of Buying a Used Audi Q7 (4M0 2017-2019) Rear Steering Gear Rack (Part Number: 4M0501055E)**

#### **Pros**

1. **Reliability of the Audi Brand** Audi s engineering standards ensure that the steering rack is built to last, especially in the Q7 s premium segment. The 4M0 model is known for its solid build quality compared to some competitors.

2. **Compatibility with Aftermarket Parts** The 4M0 steering rack is widely available from both OEM (Audi) and aftermarket suppliers, making repairs and replacements easier and often more affordable than original parts.

3. **Durability in Harsh Conditions** The Q7 is designed for luxury and performance, meaning the steering rack is robust enough to handle heavy loads, off-road use (if equipped), and long-term durability.

4. **Ease of Replacement** The 4M0 rack is relatively straightforward to install, especially if you have basic mechanical skills or access to a professional mechanic. Many online guides and videos are available for DIY enthusiasts.

5. **Warranty Options** If purchasing from a reputable supplier (e.g., eBay, RockAuto, or an Audi specialist), you may find parts with extended warranties, reducing long-term risk.

6. **Common Issue Awareness** Since the 4M0 rack is a known component, mechanics and owners are familiar with its potential failures (e.g., fluid leaks, play in the steering), allowing for proactive maintenance.

7. **Value for Money** Compared to newer models, a used rack from this generation can be significantly cheaper while still offering high-quality performance.

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#### **Cons**

1. **Potential Fluid Leaks** Some owners report leaks from the rack s seals, particularly if the vehicle has been driven hard or neglected. Regular fluid checks and top-ups are recommended.

2. **Worn Bushings or Mounts** Over time, the rubber bushings or mounts that secure the rack to the vehicle can degrade, leading to clunking noises or excessive play in the steering. Replacement may be needed if these components fail.

3. **Cost of Replacement** While the part itself may be affordable, labor costs for installation (especially in a dealership) can be high. DIY installation is possible but requires mechanical skill.

4. **Compatibility with Modified Vehicles** If the Q7 has been modified (e.g., lifted suspension, wider tires), the stock rack may not handle the increased stress, potentially leading to premature wear.

5. **Limited Longevity Without Maintenance** Like any mechanical component, the rack s lifespan depends on maintenance. Neglecting fluid changes or ignoring warning signs (e.g., stiff steering, vibration) can lead to costly failures.

6. **Availability of Genuine vs. Aftermarket Parts** While aftermarket racks are common, some owners prefer OEM parts for peace of mind. Aftermarket options may vary in quality, so sourcing from trusted brands is crucial.

7. **Potential for Pre-Existing Damage** If buying a used rack from a salvage yard or private seller, there s a risk of hidden damage (e.g., cracked housing, internal wear). Inspection or testing is recommended before purchase.

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### **Conclusion**

The **Audi Q7 (4M0) rear steering rack (4M0501055E)** is a solid, reliable component when maintained properly. Its pros durability, availability, and compatibility make it a practical choice for most owners, while its cons potential leaks, wear over time, and replacement costs are manageable with regular upkeep.

If you re replacing a failing rack, prioritize purchasing from a reputable supplier (preferably with a warranty) and ensure the vehicle s suspension is otherwise in good condition. For long-term reliability, consider upgrading to a high-quality aftermarket rack if budget allows, as these often come with better seals and warranties.

### **Recommendation**

- **Buy from a trusted source** (e.g., RockAuto, eBay with seller ratings, or an Audi specialist) to avoid counterfeit or damaged parts.

- **Check for leaks or play** before installation if the rack shows signs of wear, consider a refurbished OEM or premium aftermarket alternative.

- **Follow maintenance guidelines** regularly check and replace steering fluid as recommended (typically every 60,000 100,000 miles).

- **Consider professional installation** if unsure about DIY misalignment or improper sealing can lead to further issues.

- **Monitor for early warning signs** (e.g., stiff steering, unusual noises) and address them promptly to extend the rack s lifespan.

For most owners, this rack is a **cost-effective and reliable upgrade**, especially when sourced carefully and maintained. However, if budget permits, investing in a higher-quality aftermarket rack (e.g., from **Meyle, Febi, or Dorman**) may offer better long-term performance.

Details:

Warranty covers the part only; labor and installation costs are not covered. Manufacturer Part Number: 4M0501055E. Storage Location: RU2A01. Color: Deep Black.

Stock Number: 26030. Condition: Used. Mileage: 56321. Country/Region of Manufacture: Germany.

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part #: 4m0501055e prices

• $450.00-$1158.35

specifications steragebo:

• for models: Q7
• for makes: Audi
• for years: 2017-2019
• mpn: 4m0501055e
• ipn: 551-11121
• year: 2018
• storage location: Ru2a01
• body style: Suv
• interior color: Black/ Moon Silver
• engine: 3.0l / Crec
• transmission: 8spd A.t. / Sup
• oe/oem part number: 4m0-501-055-e; 4m0 501 055 E
• country of origin: Germany
• type: Steering Gear
• vehicle color: Deep Black

payments steragebo:

• credit card: Visa
• wallet: Google-pay
• other
• money order
• cash
• check

seller steragebo:

• rating: 99.9%
• city: Rancho Cordova, California
• # reviews: 75651

offer steragebo:

• options: Ship-to-home
• quantity: 1
• availability: In Stock
• best offers: True
• started: February 28, 2026
• sold: 0

shipping steragebo:

• class: Standard
• type: Fixed
• carrier: USPS, UPS
• transit: 4-10 Days
• cost: $0.00
• service: USPS Ground Advantage, UPS Ground

general steragebo:

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

returns steragebo:

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

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