INFINITI 490011LA0A Power Steering Gear Rack Pinion QX56

( Manufacturer Part Number: 490011LA0A ), ( Type: Rack Pinion ), ( Oe/oem Part Number: 490011la1c / 49001-1la1c ), ( Vintage Part: No ), ( Universal Fitment: Yes )

Review INFINITI Power Steering Gear Rack And Pinion Oem fits QX80 RWD 2011–2024

The **Infiniti QX80 (2011 2024) and QX56 (2013 2024) Power Steering Gear Rack & Pinion Assembly (Part # 490011LA0A)** is a precision-engineered, high-performance component designed exclusively for Infiniti s luxury SUV lineup, ensuring seamless steering responsiveness and long-term reliability. This rack-and-pinion assembly is engineered to deliver smooth, precise control whether navigating tight city streets, cruising on open highways, or tackling off-road terrain, making it a critical element in maintaining the vehicle s sporty handling dynamics. Built with Infiniti s signature blend of durability and performance, this part is manufactured to exacting standards, featuring a robust aluminum housing reinforced with high-grade seals and bushings to minimize wear and prevent fluid leaks. The integrated pinion shaft, machined from premium steel, engages with the rack s helical teeth with minimal friction, ensuring consistent feedback and reducing the effort required for steering even at low speeds or during aggressive maneuvers. For rear-wheel-drive (RWD) models, this assembly is specifically tuned to complement the vehicle s balanced weight distribution and enhanced traction, contributing to a more engaged and responsive driving experience. Whether replacing a worn-out unit or upgrading to an OEM-quality part for a restoration project, this gear rack and pinion assembly guarantees compatibility with Infiniti s advanced steering systems, including those equipped with variable assist technology, ensuring optimal performance across the entire model range. Its seamless integration with the vehicle s power steering fluid circuit also helps maintain hydraulic efficiency, reducing the risk of pump strain and prolonging the lifespan of related components. Ideal for both professional mechanics and discerning owners seeking to preserve their Infiniti s premium feel, this part is a testament to Infiniti s commitment to blending luxury with driving dynamics.

### **Pros and Cons of Buying a 2011 2024 Infiniti QX80/QX56 with the Specs: 4.9L V8 (0490011LA0), Power Steering Gear Rack & Pinion, RWD**

---

### **Pros**

**1. Strong Engine and Performance**

The 4.9L V8 (VQ45DE) is a robust, naturally aspirated engine known for reliability when properly maintained. It produces **330 340 hp** and **332 lb-ft of torque**, delivering strong acceleration and towing capacity (up to **5,500 lbs** with the right setup). The V8 s simplicity compared to turbocharged or hybrid systems means fewer complex components that can fail.

**2. Spacious and Luxurious Interior**

- **Generous cargo space** (up to **24.5 cu. ft.** in the QX80, more than many luxury SUVs).

- **High-quality materials** (especially in higher trims like **QX56**).

- **Comfortable seating** with good legroom and headroom for passengers.

- **Quiet cabin** due to excellent sound insulation.

**3. RWD Configuration Benefits**

- **Better handling and driving dynamics** compared to AWD/FWD, appealing to enthusiasts.

- **Potential for better fuel efficiency** in light-duty use (though still lower than FWD/AWD models).

- **Simpler drivetrain** (fewer components than AWD systems, which can be a maintenance advantage).

**4. Strong Resale Value (Compared to Competitors)**

Infiniti s luxury SUVs, particularly the QX80, hold their value better than some rivals (e.g., older Lexus GX or Cadillac Escalade). The **QX56** (luxury variant) retains value well due to its premium branding.

**5. Availability of Reliable Used Parts**

As a well-established model, parts for the **VQ45DE engine, gear rack, and power steering** are widely available. The **rack-and-pinion steering** is durable if maintained, though wear over 10 years should be checked.

**6. Towing and Hauling Capability**

With the right setup (heavy-duty suspension, trailer hitch), this SUV can tow **up to 5,500 lbs**, making it suitable for boats, trailers, or large equipment.

**7. Infiniti s Warranty and Service Network**

Many 2011 2014 models may still be under **extended factory warranties** (if purchased from a dealer with remaining coverage). Infiniti dealerships are generally well-stocked for repairs.

**8. Off-Road and Adventure Potential**

The **QX80** (especially in **QX56 trim**) offers **optional all-wheel drive (AWD)** and **towing packages**, making it a capable adventure SUV for light off-roading or highway hauling.

---

### **Cons**

**1. Poor Fuel Economy**

- **15 18 MPG city / 20 23 MPG highway** (RWD).

- **Even worse with AWD** (if equipped).

This makes it expensive to operate, especially for daily commuting.

**2. High Maintenance Costs**

- **V8 engines require regular oil changes (every 5,000 7,500 miles)** to prevent sludge buildup.

- **Timing chain tensioners** can wear out ( $1,500 $2,500 replacement).

- **Suspension and steering components** (rack-and-pinion, bushings) may need replacement after **100,000 miles**.

- **Transmission (if automatic)** can be finicky; some owners report **CVT issues** (if equipped).

**3. Aging Technology and Infotainment**

- **Older models (2011 2015) have outdated infotainment** (slow response, limited Apple CarPlay/Android Auto support).

- **Noisy cabin** in some trims (especially **QX80 base models**).

- **Rear visibility is poor** due to large size and high seating position.

**4. Weight and Handling**

- The **V8 s weight ( 5,000 lbs)** makes it sluggish in city driving.

- **RWD models can feel understeer-prone** in tight maneuvers (AWD helps but adds complexity).

- **Steering feel can be soft** (especially if power steering fluid is low or the rack is worn).

**5. Safety Concerns (Older Models)**

- **2011 2014 models lack modern safety tech** (no standard blind-spot monitoring, lane-keeping, or automatic emergency braking).

- **Recalls and structural issues** (e.g., **2011 2013 QX56 had a recall for fuel pump failures**).

**6. Depreciation Over Time**

While better than some competitors, the **QX80/QX56 loses value faster than newer luxury SUVs** (e.g., **Lexus LX, Cadillac Escalade**). A **2020 model** will hold value better than a **2011 2015**.

**7. Noise and Vibration Issues**

- **Road noise** can be intrusive in higher-speed driving.

- **Engine and drivetrain noise** may increase as components wear.

**8. Limited Hybrid/Electric Options**

If fuel efficiency is a priority, the **QX80** lacks a hybrid variant (unlike the **Lexus LX 570 Hybrid**), making it less future-proof.

---

### **Key Considerations Before Buying**

1. **Mileage and Maintenance History**

- **Ideal mileage:** **Under 100,000 miles** (if well-maintained).

- **Oil changes records** (critical for V8 longevity).

- **Timing chain tensioner replacement** (if not done, budget for it).

- **Steering rack and power steering fluid leaks**.

- **Transmission fluid changes** (every 60,000 miles).

2. **Engine Condition**

- Listen for **knocking, ticking, or oil leaks** (signs of timing chain or valve cover gasket issues).

- **Compression test** may be needed if the engine sounds rough.

3. **Suspension and Steering**

- **Rack-and-pinion** can wear out ( $1,000 $1,500 replacement).

- **Shocks and struts** may need replacement after **80,000 miles**.

- **Bushings and control arms** can wear out, causing clunking noises.

4. **Transmission (If Automatic)**

- **CVT models** (common in newer QX56s) can have **overheating or jerking issues**.

- **Manual transmission** (if available) is rare but more durable.

5. **Rust and Body Condition**

- **Check undercarriage, wheel wells, and frame rails** for rust (common in snowy regions).

- **Paint and panel gaps** should be inspected for poor body work.

6. **Alternatives to Consider**

- **If towing is the priority:** **Lexus LX 570, Cadillac Escalade (V8), or Ford Expedition (3.5L EcoBoost)**.

- **If fuel efficiency matters:** **Toyota Land Cruiser (200 MPG hybrid), Lexus LX 570 Hybrid, or Subaru Ascent (AWD efficiency)**.

- **If luxury is key:** **2020 QX80/QX56 (with modern tech) or Lexus LX**.

---

### **Final Recommendation**

You **need a large, comfortable SUV for towing/hauling** (boats, trailers, equipment).

You **prefer RWD for better handling** and don t mind lower fuel economy.

You **find a well-maintained example** (under **100,000 miles**, with **full service records**).

You **don t mind higher running costs** (gas, maintenance) for the **V8 s power and space**.

You **prioritize reliability over fuel efficiency** (if the engine and drivetrain are in good shape).

You **need good fuel economy** (MPG will be **15 20 city**).

You **can t afford maintenance** (V8s require **more oil changes, timing chain checks, and suspension work**).

You **want modern tech** (no CarPlay/Android Auto in older models).

You **live in a snowy region** (AWD is better for snow, and rust can be an issue).

You **prefer a quieter, more efficient luxury SUV** (consider a **Lexus LX

Details:

It shows minor wear from normal use. Please see all photos for the exact condition and confirm this part fits your vehicle before purchasing. The rack was installed just a few months before the engine failed. This is out of a 2WD vehicle.

This item is in good used condition.

part #: 490011la0a prices

• $153.00-$247.57

specifications steragebo:

• for models: Qx80, Rwd
• for makes: Infiniti
• for years: 2011-2024
• mpn: 490011la0a
• type: Rack Pinion
• oe/oem part number: 490011la1c / 49001-1la1c
• vintage part: No
• universal fitment: Yes

offer steragebo:

• best offers: True
• availability: In Stock
• sold: 0
• quantity: 1
• started: May 15, 2026
• options: Ship-to-home

seller steragebo:

• rating: 100.0%
• city: Bulverde, Texas
• # reviews: 467

shipping steragebo:

• type: Calculated
• class: Standard
• service: UPS Ground
• cost: $72.60
• carrier: UPS
• transit: 4-11 Days

returns steragebo:

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

general steragebo:

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

payments steragebo:

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

Infiniti 490011LA0A Is Similar To:

• 484701ca1b Nissan Infiniti Oem 10-13 (21.5% similar) Est, Mon to Fri...(November 29th, 2017)
• 48470jk70b Nissan Infiniti Oem 2009 (21.7% similar) Est, Mon to Fri...(November 29th, 2017)
• 48470jk70c Nissan Infiniti Oem 11-13 (21.5% similar) Est, Mon to Fri...(November 29th, 2017)
• 489884gb5a Nissan Infiniti Oem Upper Bracket Right (20.7% similar) All airbag modules are also non returnable. Est, Mon to Fri...(October 8th, 2018)
• 49001-1ca0b Infiniti Rwd Power Steering Rack And Pinion (57.1% similar) American auto export ft...(October 24th, 2018)
• 49001-1nd1e Infiniti Coupe Awd Steering Gear Rack And Pinion (56.6% similar) American auto export ft...(September 25th, 2018)
• 490011ba0a Infiniti Rwd Power Steering Gear Rack And Pinion (62.5% similar) American auto export ft...(August 13th, 2018)
• 490014ga3a Infiniti Oem Awd Electronic Power Steering Rack Pinion Tie Rods (54.1% similar) Oem infiniti Q50 AWD electronic power steering rack pinion inner outer tie rods included as shown good working condition fits all with steer by wire system or dynamic no shipping...(August 19th, 2018)
• 49001jk60d Infiniti Steering Rack Gear Box Oem Miles (43.8% similar) Please through messages for expedited shipping quotes if an item arrives damaged, immediately messaging within at least 24 hours further instructions...(July 4th, 2018)
• 49110jk20a Infiniti Awd Power Steering Pump Pulley (41.5% similar) 7INFINITIQ70L20173. 7INFINITIQ7020143. American auto export ft. 7INFINITIQ70L20153. 7INFINITIQ70L20163. 7INFINITIQ7020163. 7INFINITIQ7020153...(August 8th, 2018)
• 492001ba3b Nissan Infiniti Oem 08-09 (21.5% similar) Superseded part numbers this item may have been from a different number manufacture. These parts are new and genuine oem sourced directly from Nissan. This part fits vehicles made in the following years 2008 , 2009...(July 31st, 2017)