INFINITI Power Steering Gear Rack Pinion 49001-1BA0B

( Manufacturer Part Number: 490011BA0B ), ( Type: Rack Pinion ), ( Ipn: 49001-1ba0b ), ( Manufacturer Warranty: 1 Month ), ( Fitment Type: Direct Replacement ), ( Year Fitment: 2008 2009 2010 2011 2012 ), ( Vintage Part: No ), ( Country Of Origin: Japan )

Review INFINITI Power Steering Gear Rack And Pinion Oem fits EX35 EX 2008–2012

The **Infiniti I35 (2008 2012) Power Steering Gear Rack and Pinion Assembly (Part Number: 490011BA0B)** is a critical component of the vehicle s steering system, designed to deliver precise, responsive, and smooth directional control while ensuring long-term reliability. This high-performance rack-and-pinion assembly is engineered to work seamlessly with the I35 s front-wheel-drive architecture, offering a balance of durability and efficiency for both urban commuting and highway driving. The rack features a robust, corrosion-resistant construction, often incorporating galvanized steel or zinc-plated components to withstand harsh environmental conditions, including salt exposure in winter climates or prolonged exposure to moisture and road debris. The pinion, a key driver of the system, is precision-machined to minimize play and backlash, ensuring that steering inputs are translated directly into the wheels with minimal lag, enhancing both driver engagement and safety.

This particular part is designed to replace the original equipment manufacturer (OEM) assembly in cases of wear, damage, or failure, which may manifest as excessive play in the steering wheel, a grinding noise during turns, or a spongy, unresponsive feel when navigating corners. The rack-and-pinion mechanism operates by converting the rotational motion of the steering wheel into linear motion, moving the steering knuckles and tires left or right. The pinion gear, driven by the steering column, engages with the serrated teeth of the rack, allowing for a compact and efficient design that maximizes space utilization in the vehicle s underhood area. The assembly is typically secured with mounting brackets and bushings that absorb vibrations and reduce noise, contributing to a quieter cabin experience.

For the **2008 2012 Infiniti I35 (EX and EX35 trims)**, this part is essential for maintaining the vehicle s alignment and handling characteristics, particularly as the car ages or after exposure to rough road conditions. The rack-and-pinion assembly is often paired with updated steering fluid lines, tie rod ends, and bushing kits to ensure a complete and long-lasting repair. High-quality aftermarket alternatives to this part are engineered to meet or exceed OEM specifications, incorporating sealed bearings, corrosion-resistant coatings, and precise machining to replicate the performance of the original component. Whether installed during routine maintenance or as part of a steering system overhaul, this rack-and-pinion assembly is a foundational element that directly impacts the I35 s steering feel, stability, and overall drivability, making it a vital upgrade for owners seeking to restore or enhance their vehicle s handling capabilities.

### **Pros and Cons of Buying a 2008-2012 Infiniti EX35 with a Power Steering Gear Rack/Pinion Issue**

#### **Pros**

1. **Reliable Base Platform** The Infiniti EX35 (based on the Nissan Altima) is known for its solid engine (V6 or turbocharged I4 in later models) and decent handling. Many core components, such as the suspension, transmission, and drivetrain, are well-built and durable if maintained properly.

2. **Good Resale Value** Compared to some luxury or high-performance vehicles, the EX35 retains decent resale value, especially if well-documented and in good condition.

3. **Comfortable Interior** The cabin is spacious, quiet, and well-equipped with standard features like leather seats, power adjustments, and a decent infotainment system (though later models improved this).

4. **Turbocharged Option (2010 )** The 2010-2012 EX35 with the **2.5L turbocharged I4 (VQ25DE)** offers better fuel economy and performance than the older V6, making it a more practical choice if properly maintained.

5. **Potential for Cost-Effective Repairs** Since the EX35 is a mid-size luxury sedan, parts (especially for non-luxury components) are often affordable compared to German or Japanese luxury brands.

6. **Used Market Availability** You ll find many examples at reasonable prices, allowing for negotiation and potential upgrades (e.g., aftermarket audio, suspension, or performance mods).

7. **Proven Reliability in Some Areas** The **CVT transmission (2010 )** and **automatic transmissions (pre-2010)** are generally reliable if serviced on schedule. The **V6 (QR25DE)** is also a well-regarded engine when maintained.

---

#### **Cons**

1. **Power Steering Gear Rack/Pinion Failure** This is the **most critical issue** with these models. The **rack-and-pinion steering system** (especially in the **2008-2012 EX35**) is prone to **leaks, binding, or complete failure** due to:

- **Worn seals** leading to power steering fluid leaks.

- **Internal corrosion** (common in older models exposed to road salt or poor maintenance).

- **Binding or stiff operation**, which can make steering difficult or unsafe.

- **Costly repairs** Replacing a rack-and-pinion assembly typically costs **$800 $1,500 ** (parts labor), and DIY is difficult due to complexity.

2. **CVT Transmission Issues (2010 Models)** While not as notorious as some other CVTs (e.g., Nissan s early models), the **Jatco JF011C** in the EX35 can develop:

- **Slippage or hesitation** under load.

- **Overheating** if fluid isn t changed regularly.

- **Premature wear** if not maintained properly.

- **Repairs can be expensive** (fluid flushes are cheap, but transmission rebuilds exceed **$3,000**).

- **Faulty radio/navigation systems** (common in Nissan/Infiniti models of this era).

- **Intermittent electrical gremlins** (e.g., power windows, locks, or climate control).

- **Check Engine Lights (CEL)** due to minor sensor issues (often fixable with a scan tool).

- **Worn bushings** (control arm, sway bar).

- **Leaking shocks/struts** (especially in older models).

- **Rust in wheel wells or undercarriage** (common in snowy/coastal regions).

- These are **easier and cheaper to fix** than the steering rack but still add up over time.

- **Rust in wheel arches, rocker panels, or subframe**.

- **Peeling paint or cosmetic wear** (common in older luxury sedans).

- **Dent damage** (a common issue in used luxury cars).

- **Neglected oil changes** (V6 and turbo engines are sensitive to oil breakdown).

- **Ignored fluid leaks** (power steering, coolant, transmission).

- **Worn spark plugs, timing belt (if applicable), or serpentine belt** issues.

7. **Luxury Brand Perception** While the EX35 is a **luxury sedan**, it s not as prestigious as a BMW 5 Series or Mercedes E-Class. Some buyers may prefer a more refined driving experience.

---

### **Key Considerations Before Buying**

- **Test drive** Listen for **whining, grinding, or resistance** in the steering.

- **Check for leaks** under the car (power steering fluid is usually **pink or red**).

- **Ask for maintenance records** If the rack was **replaced or serviced**, that s a good sign.

- **Get a pre-purchase inspection (PPI)** A mechanic should **disassemble the rack** to check for internal wear (this costs **$100 $200** but is worth it).

- **Check transmission fluid** It should be **pinkish and not burnt-smelling**.

- **Look for hesitation or jerking** during acceleration.

- **Review service history** CVTs require **fluid changes every 60K miles**.

3. **Engine Condition**

- **V6 (QR25DE)**: Reliable but **oil changes are critical** (use **5W-30 or 5W-40 synthetic**).

- **Turbo I4 (VQ25DE)**: More efficient but **more sensitive to oil quality** (turbocharged engines **must** have proper oil changes).

- **Listen for knocking or unusual noises** (could indicate **rod bearings or piston issues**).

4. **Rust & Body**

- **Inspect wheel wells, rocker panels, and undercarriage** for rust.

- **Check for dents or misaligned panels** (common in used luxury cars).

5. **Electrical & Infotainment**

- **Test all power features** (windows, locks, climate control).

- **Check the radio/navigation system** (older models may have **dead pixels or software glitches**).

---

### **Conclusion & Recommendation**

#### **Should You Buy This Car?**

**Yes, but with strict conditions.**

- **If the steering rack is in excellent condition** (no leaks, smooth operation, documented maintenance) and the rest of the car is well-maintained, the **EX35 can be a great value**.

- **If the steering rack is failing or unknown**, **avoid it** unless you re prepared for a **$1,000 repair** shortly after purchase.

- **If buying a 2010 model with a CVT**, ensure **transmission fluid has been changed** and there are **no hesitation issues**.

#### **Best Use Cases for This Car**

**Budget-conscious luxury sedan** If you want a **comfortable, spacious, and reliable** car without paying BMW/Audi prices.

**Project car for a mechanic** If you re comfortable with **DIY repairs** (steering rack, suspension, electrical fixes).

**Short-term or commuter vehicle** If you **won t drive it hard** and can **budget for potential repairs**.

#### **Worst Cases to Avoid**

**Buying without a PPI** Many EX35s hide **expensive steering rack or transmission issues**.

**Ignoring maintenance history** A car with **no service records** is a **major red flag**.

**Assuming "luxury" means reliability** Infiniti s luxury branding doesn t guarantee **long-term dependability** like some German brands.

#### **Final Recommendation**

- **A documented steering rack replacement** (or one that tests fine in a PPI).

- **Fresh transmission fluid (CVT models).**

- **No major rust or electrical issues.**

- **A clean title and service records.**

**It can be a solid buy**, especially if priced **below $10,000 $12,000** (depending on mileage).

**Walk away** unless you re prepared for **unexpected repairs**.

- If you want **better reliability**, look at a **2010 Lexus ES350** or **2011 Ac

Details:

2008 - 2012 Infiniti EX35, Power Steering Gear Rack Pinion OEM 490011BA0B, Please match part numbers before buying, ITEM CONDITION Used, Scuffs, See All Pictures.

part #: 490011ba0b prices

• $281.80-$650.00

specifications steragebo:

• for models: Ex35, Ex
• for makes: Infiniti
• for years: 2008-2012
• mpn: 490011ba0b
• type: Rack Pinion
• ipn: 49001-1ba0b
• manufacturer warranty: 1 Month
• fitment type: Direct Replacement
• year fitment: 2008 2009 2010 2011 2012
• vintage part: No
• country of origin: Japan

returns steragebo:

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

shipping steragebo:

• type: Fixed
• carrier: FedEx
• cost: $0.00
• transit: 2-6 Days
• service: Standard, FedEx Ground / FedEx Home Delivery
• class: Standard

payments steragebo:

• wallet: Paypal
• other
• credit card: Mastercard

general steragebo:

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

seller steragebo:

• # reviews: 1017
• city: Pearland, Texas
• rating: 99.9%

offer steragebo:

• best offers: True
• sold: 0
• quantity: 1
• options: Ship-to-home
• started: June 4, 2026
• availability: In Stock

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