INFINITI 490011MA2C Power Steering Gear Rack Pinion M37 Q70

( Manufacturer Part Number: 490011MA2C ), ( Type: Rack Pinion Complete Unit ), ( Oe/oem Part Number: Infiniti M37 M35h M56 Q70 Q70l 2011 2012 2013 2014 15 16 17 18 19 ), ( Vintage Part: No ), ( Country Of Origin: Japan ), ( Performance Part: Yes )

Review INFINITI Oem M37 Q70 Power Steering Gear Rack And Pinion Assembly fits M56 RWD 2011–2019

The **Infiniti M37 (M56) Q70 (2011 2019) Power Steering Gear Rack and Pinion Assembly (Part #490011MA2C)** is a precision-engineered component designed exclusively for the rear-wheel-drive (RWD) variants of the iconic Infiniti Q70, which shares its underpinnings with the luxury-oriented Mercedes-Benz E-Class (W212) and the high-performance AMG E63. This high-quality rack-and-pinion assembly represents the pinnacle of automotive steering technology, combining durability, responsiveness, and seamless integration with the vehicle s advanced suspension and handling dynamics. Crafted from robust, corrosion-resistant materials, this steering gear is engineered to withstand the demands of daily driving, spirited cornering, and extended use under varying environmental conditions, ensuring consistent performance and driver engagement.

The **M37 (M56) Power Steering Gear Rack and Pinion** features a **tapered roller bearing system** at the pinion end, which minimizes friction and wear while delivering precise, linear steering feedback. This design enhances the Q70 s already sharp and communicative steering feel, allowing for effortless low-speed maneuverability while maintaining a firm, direct connection to the road at higher speeds. The rack itself is constructed from **high-strength steel**, machined to exacting tolerances to prevent flex or binding, which is critical for maintaining the Q70 s sport-tuned handling characteristics. Additionally, the assembly incorporates **sealed ball joints** at the tie-rod ends, ensuring longevity and reducing the risk of premature wear or fluid leakage, which can compromise steering responsiveness.

This **OEM-specification replacement part** is fully compatible with the **3.7-liter V6 (M37DE) or 5.6-liter V8 (M56DE) engine configurations** found in the Q70, including both naturally aspirated and supercharged variants. The pinion-to-rack interface is meticulously aligned to match the factory specifications, eliminating the need for extensive modifications or adjustments once installed. Whether replacing a worn-out original component or upgrading from an aftermarket alternative, this steering gear delivers the **authentic, premium feel** that Infiniti enthusiasts expect, ensuring that the Q70 retains its reputation for refined yet engaging driving dynamics. Built to withstand the rigors of both urban commuting and high-performance driving, this part is an essential upgrade for owners seeking to restore or enhance the Q70 s legendary steering precision and reliability.

### **Pros and Cons of Buying a 2011-2019 Infiniti M37 (M56/Q70) with the 490011MA2C Power Steering Gear Rack & Pinion (RWD)**

#### **Overview**

The **2011-2019 Infiniti M37 (M56/Q70)** is a luxury crossover SUV based on the Nissan Rogue platform but with a more premium Infiniti badge, refined interior, and available performance upgrades. The **490011MA2C power steering gear rack and pinion** is a common part used in these models, particularly in rear-wheel-drive (RWD) variants. Below is a detailed breakdown of the pros and cons of purchasing one, followed by a conclusion and recommendation.

---

### **Pros**

1. **Luxury and Comfort**

- The M37 offers a **spacious, well-appointed cabin** with high-quality materials, especially in higher trims (e.g., M37, M56, Q70).

- **Quiet ride** due to good sound insulation and suspension tuning, making it comfortable for long drives.

- **Heated/ventilated seats** (available in higher trims) and **adjustable ambient lighting** add to the premium feel.

2. **Performance and Handling (RWD Models)**

- The **RWD configuration** provides a more engaging driving experience, with better weight distribution and sharper handling than FWD or AWD variants.

- The **2.5L or 3.7L V6 engines** (depending on model year) are **reliable and smooth**, with decent power output (184-272 hp, depending on trim).

- **Available CVT or 6-speed automatic transmission** (though the CVT can feel less sporty).

- **Performance-oriented trims (M56)** come with **stiffer suspension, sport-tuned steering, and optional all-wheel drive (AWD)**, making them more dynamic.

3. **Infiniti s Reputation for Reliability (Compared to Nissan)**

- Infiniti has historically been **more refined and better supported** than its Nissan counterparts, with fewer common issues.

- The **M37 platform is solid**, with fewer major reliability concerns compared to some other luxury crossovers.

4. **Resale Value and Brand Prestige**

- Infiniti holds its value **better than many domestic brands**, though not as well as German or Japanese luxury brands.

- The **M56 and Q70 trims** have a **sportier and more exclusive** image, which may appeal to buyers who want a premium SUV with performance credentials.

5. **Available Tech and Safety Features (Later Models)**

- **2015 models** come with **Infiniti Connect (optional), Bluetooth, USB ports, and a user-friendly infotainment system**.

- **Standard safety features** include **stability control, traction control, and multiple airbags**. Higher trims offer **adaptive cruise control, lane departure warning, and blind-spot monitoring**.

- **Panoramic sunroof** (available in some trims) improves interior brightness and ambiance.

6. **Cost-Effective Luxury SUV**

- Compared to **German or Japanese luxury competitors (e.g., Lexus RX, BMW X5, Audi Q5)**, the M37 offers **similar luxury at a lower price point**.

- **Maintenance costs** are generally **lower than European brands**, though still higher than a Toyota RAV4.

7. **Spacious Interior and Practicality**

- **Third-row seating (optional)** makes it a **family-friendly SUV**, though the third row is tight and best suited for children.

- **Large cargo space** (even with third row folded) and **easy-access doors** improve practicality.

8. **Infiniti s Warranty and Dealer Support**

- **5-year/60,000-mile basic warranty** (extended warranties available) provides peace of mind.

- **Dealer network is well-established**, with easier access to parts and service compared to some niche brands.

---

### **Cons**

1. **Engine and Transmission Limitations**

- The **2.5L engine (pre-2016)** is **underpowered** for a luxury SUV, especially in RWD models. It struggles with **towing or heavy loads**.

- The **3.7L V6 (2016 )** is better but still **not as powerful as competitors** (e.g., BMW 3.0L inline-6 or Lexus 3.5L V6).

- The **CVT transmission** (in some models) can feel **less engaging** than a traditional automatic, though it is **reliable and smooth**.

- **No turbocharged or high-performance options** unlike the **M56 (which is more of a marketing designation than a true performance model)**.

2. **Ride Quality and Suspension**

- While comfortable, the **suspension can feel too soft** for those who prefer a firmer, more responsive ride.

- **Body roll in corners** is noticeable, especially in RWD models, making it less engaging than a true sport SUV.

- **Road noise** can be intrusive at higher speeds, though better than some budget crossovers.

3. **Interior Quality Variability**

- **Lower trims (M37)** use **more plastic and cheaper materials**, which can feel **cheap compared to competitors**.

- **Higher trims (M56, Q70)** improve significantly, but still **not at Mercedes or Lexus levels**.

- **Infotainment system** (pre-2017) is **clunky and outdated** compared to modern rivals.

4. **Reliability Concerns (Some Models)**

- **Transmission issues** (especially in early CVT models) have been reported, though **Infiniti has improved this over time**.

- **Water pump failures** (especially in the 3.7L V6) can be costly if not maintained properly.

- **Electrical gremlins** (e.g., infotainment glitches, sensor failures) are more common than in Toyota/Lexus models.

- **AWD models** have had **more drivetrain issues** than RWD, though RWD is generally more reliable.

5. **Resale Depreciation**

- While better than most domestic brands, **Infiniti still depreciates faster than Lexus, BMW, or Mercedes**.

- **M56/Q70 trims hold value better**, but a used M37 may not be as valuable as a Lexus RX or Acura RDX.

6. **Fuel Economy Trade-Offs**

- The **3.7L V6 models** (especially AWD) **drink more fuel** than smaller engines, making them **less efficient than a Toyota Highlander or Honda Pilot**.

- **CVT models** are **less efficient than traditional automatics** in some cases.

7. **Limited Aftermarket and Tuning Support**

- Unlike **BMW or Audi**, there is **little aftermarket support** for tuning or performance upgrades.

- **Stock performance is decent but not exceptional**, so enthusiasts may be disappointed.

8. **Build Quality Inconsistencies**

- Some units have **panel gaps, rattles, or poor fitment**, especially in lower trims.

- **Plastic trim pieces** can feel cheap compared to German or Japanese competitors.

9. **Infiniti s Brand Perception**

- **Not as prestigious as Lexus, BMW, or Mercedes**, which may be a drawback for some buyers.

- **Dealer network is less extensive** than Toyota or Honda, which could affect service availability in some areas.

10. **Potential Issues with the 490011MA2C Power Steering Rack**

- **Wear and tear** over time can lead to **stiffness, leaks, or excessive play** in the steering.

- **Seal leaks** (leading to power steering fluid loss).

- **Worn bushings or bearings** (causing rattling noises).

- **Hydraulic issues** (if the system is not properly maintained).

- **Replacement cost** can be **$800 $1,500** (parts labor), depending on the shop.

- **DIY replacement is possible** but requires **specialized tools and mechanical skill**.

---

### **Conclusion**

- A **comfortable, spacious luxury SUV** at a **lower price than German brands**.

- **Reliability better than most domestic competitors** (though not Lexus-level).

- **A refined cabin** (especially in higher trims) with **good safety and tech features (in later models)**.

- **A more engaging drive than a typical FWD crossover** (thanks to RWD).

- **Engine power is limited**, especially in older models.

- **Transmission and electrical issues** can be problematic if not maintained.

- **Resale value is not as strong as Lexus or BMW**.

- **The power steering rack (490011MA2C

Details:

THIS CAME OFF INFINITI Q70 2014 3.7L V6 REAR WHEEL DRIVE WITH 100K.

part #: 490011ma2c prices

• $125.00-$433.17

specifications steragebo:

• for models: M56, Rwd
• for makes: Infiniti
• for years: 2011-2019
• mpn: 490011ma2c
• type: Rack Pinion Complete Unit
• oe/oem part number: Infiniti M37 M35h M56 Q70 Q70l 2011 2012 2013 2014 15 16 17 18 19
• vintage part: No
• country of origin: Japan
• performance part: Yes

offer steragebo:

• sold: 0
• quantity: 1
• options: Ship-to-home
• started: April 27, 2026
• availability: In Stock

returns steragebo:

• paid by: Buyer
• time: 60 Days
• policy: Returns Accepted

general steragebo:

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

seller steragebo:

• # reviews: 13909
• city: Rancho Cordova, California
• rating: 99.8%

shipping steragebo:

• class: Standard
• transit: 3-7 Days
• carrier: UPS
• cost: $65.00
• type: Fixed
• service: UPS Ground

payments steragebo:

• wallet: Apple-pay
• credit card: Diners-club
• other

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