BMW 32106859090 Power Steering Gear Rack Pinion

( Manufacturer Part Number: 32106859090 ), ( Item Diameter: Interior ), ( Input Shaft Length: Oem ), ( Vintage Part: No ), ( Type: Rack Pinion ), ( Manufacturer Warranty: 3 Months ), ( Country Of Origin: Germany )

Review BMW Power Steering Gear Rack And Pinion Assembly Oem fits 335I 2012–2013

The **BMW 32106859090 Power Steering Gear Rack and Pinion Assembly** (compatible with the **2012 2013 BMW 335i, E90/E92/E93 platforms**) is a high-performance, precision-engineered component designed to deliver seamless steering response, durability, and reliability under demanding driving conditions. This aftermarket replacement part is meticulously crafted to meet or exceed OEM specifications, ensuring an exact fit and identical functionality to the original equipment manufacturer (OEM) unit. The rack and pinion assembly features a robust **aluminum housing** reinforced with high-strength steel components, providing superior resistance to wear, corrosion, and mechanical stress, which is particularly critical for enthusiasts who push their vehicles beyond factory limits. The **serpentine rack design** ensures smooth, linear steering feedback, reducing play and enhancing precision, while the **precision-machined pinion shaft** is engineered with optimized gear teeth for reduced noise, improved efficiency, and extended longevity. This assembly is compatible with both **hydraulic and electric power steering systems** (depending on the vehicle s configuration), making it a versatile upgrade for those seeking to restore or enhance steering performance after wear or damage. Whether replacing a failed OEM unit or upgrading for better handling, this rack and pinion assembly is built to withstand the rigors of spirited driving, offering a balance of performance, durability, and ease of installation. For optimal results, it is recommended to pair this component with high-quality hydraulic fluid or electric power steering fluid, as specified by BMW, to ensure smooth operation and prevent premature wear.

### **Pros and Cons of Buying a BMW 321 (E90/E92/E93) 2012-2013 335i with a Replaced Power Steering Gear Rack & Pinion (Part #6859090)**

#### **Pros**

1. **Reliability After Replacement**

- The power steering rack and pinion (part #6859090) is a common failure point in the 335i, often leaking fluid or developing internal wear. A genuine or high-quality aftermarket replacement (such as from **Bentley, Sachs, or BMW OEM**) can restore proper steering feel and prevent further damage.

- If installed correctly, the new rack should eliminate leaks, reduce play, and improve steering responsiveness.

2. **Prevents Costly Secondary Damage**

- A failing rack can contaminate the power steering fluid, leading to corrosion in the steering pump and other hydraulic components. Replacing it early avoids these secondary issues, which can be expensive to repair.

3. **Maintains Driving Dynamics**

- The 335i s steering is already quite precise, but a worn rack can introduce slack or uneven resistance. A fresh rack ensures the expected sporty, direct feel that BMW fans appreciate.

4. **Warranty Coverage (If Applicable)**

- If the rack was replaced under BMW s **powertrain warranty** (typically 5 years/60,000 miles) or with an extended warranty, this could save significant long-term costs.

5. **Compatibility with Modifications**

- If you plan to modify the car (e.g., suspension upgrades, track tuning), a new rack ensures a solid foundation for those changes.

6. **Resale Value Protection**

- A well-maintained 335i with a fresh rack is more attractive to buyers, as rack failures are a known issue in this generation.

---

#### **Cons**

1. **Cost of Replacement**

- Labor for rack replacement is **expensive** (typically **$800 $1,500 ** depending on shop rates). Parts alone (OEM or aftermarket) range from **$600 $1,200**.

- If the rack was already failing, this is a necessary expense, but it s still a significant upfront cost.

2. **Potential for Poor Installation**

- Improper installation (e.g., incorrect torque specs, misaligned components) can lead to **steering play, binding, or premature wear**. Always choose a reputable shop with BMW experience.

3. **Recurring Maintenance Risks**

- Even a new rack requires **regular power steering fluid changes** (every **50,000 60,000 miles**) to prevent sludge buildup and ensure longevity.

- Some aftermarket racks may not last as long as OEM parts, though high-quality brands mitigate this risk.

4. **Time Off the Road**

- Rack replacement is a **multi-hour job**, requiring removal of the steering column, tie rods, and sometimes the sway bar. This means the car will be out of commission for **1 2 days**.

5. **Hidden Issues May Persist**

- If the rack failure was due to **severe internal wear** (not just a leak), the new rack might still have **minor play or stiffness** after installation. A thorough inspection post-replacement is recommended.

6. **Not a Permanent Fix for All Problems**

- If the steering pump is also failing or the fluid is contaminated, replacing just the rack won t fully resolve the issue. A **full power steering flush and pump check** may be needed.

---

### **Conclusion**

- The previous owner or mechanic has **documented the rack failure and replacement**.

- The work was done by a **trusted BMW specialist** with proper torque specs and fluid changes.

- You **verify the rack is new (not rebuilt)** and the steering feels smooth with no play.

- You **budget for future maintenance** (fluid changes, potential future rack wear).

- The rack was **not professionally replaced** or was a cheap aftermarket knockoff.

- There are **other steering-related issues** (worn tie rods, bent steering column, leaking pump).

- The seller **cannot provide proof of replacement** or the car has a history of repeated rack failures.

---

### **Recommendation**

1. **Inspect Thoroughly Before Purchase**

- **No steering play** (should feel tight and responsive).

- **No fluid leaks** under the car (especially near the rack).

- **No unusual noises** (whining, grinding) when turning.

- Ask for **service records** confirming the rack replacement and fluid changes.

2. **Consider a Pre-Purchase Inspection (PPI)**

- The rack is **genuine or high-quality aftermarket**.

- The **steering pump and fluid** are in good condition.

- No **hidden damage** from past rack failures (e.g., corroded components).

3. **Budget for Future Maintenance**

- **Power steering fluid changes** every **50,000 60,000 miles**.

- **Potential future rack replacement** (after **100,000 miles**, depending on usage).

4. **Negotiate Price Accordingly**

- If the rack was recently replaced, you may have **leverage to lower the price** (since the car is less likely to have hidden issues).

5. **Alternative Consideration: Buy a Car with a Known Good Rack**

- If possible, look for a **335i with a rack replacement history** (but verify it was done correctly).

- Alternatively, consider a **335d (diesel)**, which has a **different rack design** (less prone to leaks) if you prefer a more durable option.

---

### **Final Verdict**

**Professional installation**

**No other steering issues**

**Ongoing maintenance plan**

However, **do not buy blindly** always verify the work was done correctly. If in doubt, **get a PPI** or **choose a car with a cleaner history**. The rack replacement is a **necessary fix**, but it should not be the only consideration in your purchase decision.

Details:

As a result of it being used part, the item may show light scuffs, scratches, or other imperfections. All electronic items are tested before being listed. This part may fit one or all of the described vehicles. Shipping prices for ground apply only to the continental states of USA.

All of the parts are tested either before or after removal from vehicle. Please match part number to ensure fitment. Fitment and Compatibility.

part #: 32106859090 prices

• $523.18-$1013.03

specifications steragebo:

• for models: 335i
• for makes: Bmw
• for years: 2012-2013
• mpn: 32106859090
• item diameter: Interior
• input shaft length: Oem
• vintage part: No
• type: Rack Pinion
• manufacturer warranty: 3 Months
• country of origin: Germany

payments steragebo:

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

returns steragebo:

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

general steragebo:

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

seller steragebo:

• city: Lincoln, California
• # reviews: 10191
• rating: 99.8%

shipping steragebo:

• class: Freight
• type: Fixed
• service: Flat Rate Freight
• cost: $80.00

offer steragebo:

• best offers: True
• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• started: February 24, 2026

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