BMW Steering Gear Rack Power Pinion 551-58955 Gear/rack

( Manufacturer Part Number: 328I ), ( Part Type: Steering Pinion Gear Rack ), ( Conditions Options: 2 Dr, Rwd ), ( Genuine Oem: Yes ), ( Ipn: 551-58955 )

Review BMW Steering Gear/rack Power Rack And Pinion Canada Market fits 328I 320I 2000–2001

The **BMW 551-58955 Steering Gear/Power Rack Pinion** is a precision-engineered component designed exclusively for the **E39 320i (and compatible 318i, 323i, and 325i models)** produced between **1996 and 2005**, ensuring seamless and responsive steering performance. This high-quality replacement part replaces the original **rack-and-pinion steering system s pinion**, which is a critical component responsible for translating driver input into precise lateral movement of the front wheels. Crafted from durable **heat-treated steel**, this pinion is built to withstand the rigors of daily driving, including sharp turns, high-speed maneuvers, and prolonged use under varying road conditions. The **OEM-level tolerances** ensure a perfect fit with the existing steering rack, eliminating play, binding, or excessive wear that can compromise handling and safety. Whether installed in a **restored classic, a daily driver, or a performance-oriented vehicle**, this pinion restores the original BMW steering feel, reducing road noise and improving overall responsiveness. Its compatibility with **aftermarket steering systems** also makes it a versatile upgrade for enthusiasts looking to enhance their vehicle s steering dynamics without sacrificing reliability. By maintaining the integrity of the steering mechanism, this part contributes to a smoother, more controlled driving experience while extending the lifespan of the entire steering assembly.

### **Pros and Cons of Buying a BMW 5-Series (E39) Steering Rack (Part No. 01 320i, 551-58955, Power Rack & Pinion, 1996 2003)**

#### **Pros**

1. **Reliability and Durability** The E39 steering rack is a well-known, robust component designed for BMW s 5-series models from 1996 to 2003. Many units last well beyond 100,000 miles with proper maintenance, especially if they come from a car with low mileage or a known service history.

2. **Widespread Availability** Due to the popularity of the E39, replacement steering racks are readily available from both OEM (original equipment manufacturer) and aftermarket suppliers. This makes sourcing a compatible part easier than for newer or less common models.

3. **Compatibility with Modifications** The E39 rack is often used in performance tuning, including aftermarket suspension upgrades, larger tires, or wheel spacers. A high-quality rack can handle increased stress from these modifications better than some newer systems.

4. **Cost-Effective Replacement** Compared to newer BMW models, the E39 steering rack is relatively inexpensive to replace, especially if purchasing used or from a reputable salvage yard. Labor costs are also lower than on modern BMWs due to simpler access and fewer electronic dependencies.

5. **Proven Performance** The rack-and-pinion system in the E39 is known for smooth operation and precise feedback, which many drivers prefer over hydraulic or electronic-assisted systems in newer cars.

6. **Easy to Diagnose and Repair** Issues like leaks, excessive play, or binding are relatively straightforward to identify and fix, often requiring only basic mechanical skills. Many mechanics are familiar with E39 steering systems.

7. **Potential for Upgrades** High-performance aftermarket racks (e.g., from Moog, Febi, or BMW M Performance) can be installed, improving steering feel and reducing play, which is beneficial for enthusiasts.

---

#### **Cons**

1. **Aging Seals and Wear** Like all mechanical components, steering racks degrade over time. Common issues include leaking power steering fluid, worn-out bushings, or internal binding, which can lead to a stiff or imprecise steering feel. Regular fluid changes and inspections are necessary.

2. **Power Steering Fluid Dependency** The E39 uses a hydraulic power steering system, which requires regular fluid changes (every 30,000 50,000 miles) to prevent sludge buildup and internal damage. Neglecting this can lead to premature failure.

3. **Limited Lifespan Compared to Modern Systems** While durable, the E39 rack is not as long-lasting as some newer BMW systems, which often incorporate electronic power assistance (EPS) and more advanced sealing technologies. Expect to replace it every 100,000 150,000 miles if not maintained properly.

4. **Potential for Rust and Corrosion** Older racks, especially those from cars exposed to harsh environments (salt, moisture), may develop internal rust or corrosion, leading to stiffness or failure. Inspecting the rack for rust before purchase is critical.

5. **Compatibility Issues with Modern Mods** While the E39 rack can handle some aftermarket upgrades, extreme modifications (e.g., aggressive off-road setups, very large tires, or heavy wheel weights) may stress the system beyond its original design limits, leading to premature wear.

6. **Learning Curve for DIY Replacement** Replacing the steering rack requires removing the wheel, steering column, and sometimes the suspension components. While not extremely difficult, it is a labor-intensive job that may be challenging for inexperienced DIYers.

7. **Used Market Risks** Purchasing a used rack without proper inspection can lead to hidden issues (e.g., internal damage, worn teeth, or seized components). Always test the rack for smooth operation, check for leaks, and inspect for rust or excessive wear before buying.

---

### **Ending Conclusion**

The **BMW E39 steering rack (01 320i, 551-58955)** is a solid, reliable component that offers a good balance of performance and cost for its era. It is a practical choice for owners of E39 5-series cars, especially those planning to keep the vehicle long-term with proper maintenance. The rack s simplicity and widespread availability make it easier to repair or replace compared to newer systems, but its aging design means it requires attentive upkeep to avoid failure.

For **enthusiasts or daily drivers**, the E39 rack is a viable option if you prioritize mechanical robustness and are willing to perform regular maintenance (fluid changes, inspections). If you plan to modify the car aggressively or want a longer lifespan with less maintenance, consider upgrading to a **high-performance aftermarket rack** (e.g., Moog or M Performance) or evaluating newer BMW models with electronic power steering.

For **budget-conscious buyers**, a used E39 rack can be a cost-effective solution, but always **inspect it thoroughly** for leaks, rust, or play before installation. If purchasing from a salvage yard, verify the rack s history and test its operation if possible.

### **Final Recommendation**

- You own an E39 and need a reliable, affordable replacement.

- You are comfortable performing maintenance (fluid changes, inspections).

- You plan to keep the car for the long term with regular upkeep.

- You find a high-quality used or remanufactured rack with no visible issues.

- You want a longer lifespan with less maintenance (e.g., a remanufactured or aftermarket high-performance rack).

- You plan extensive modifications that may stress the original rack.

- You are uncomfortable with hydraulic power steering systems and prefer electronic assistance (though this would require upgrading to a newer BMW model).

For most E39 owners, the **E39 steering rack remains a practical and cost-effective choice**, provided it is properly maintained. If you re unsure about the condition of a used rack, consult a trusted mechanic to assess its health before installation.

Details:

Our hours are. 1502 SW 2nd St. Xi; Con, w/Motor sport, BMW 325i 01 Power Rack and Pinion; excl. BMW 320I 01 Power Rack and Pinion; SD, Canada market, ZF manufactured, w/Motor sport.

Lawton, OK 73501. Computers will have to be flashed by a certified dealer.

part #: 328i prices

• $143.79-$265.93

specifications steragebo:

• for models: 328i, 320i
• for makes: Bmw
• for years: 2000-2001
• mpn: 328i
• part type: Steering Pinion Gear Rack
• conditions options: 2 Dr, Rwd
• genuine oem: Yes
• ipn: 551-58955

returns steragebo:

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

offer steragebo:

• started: March 7, 2026
• availability: In Stock
• sold: 0
• quantity: 1
• options: Ship-to-home

general steragebo:

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

seller steragebo:

• rating: 97.4%
• city: Lawton, Oklahoma
• # reviews: 925

payments steragebo:

• other
• wallet: Paypal
• credit card: Mastercard

shipping steragebo:

• transit: 4-9 Days
• carrier: UPS
• class: Standard
• type: Fixed
• cost: $0.00
• service: UPS Ground

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