1. Steering Racks & Gear Boxes For Sale
  2. sku: 18018880887941782
  3. INFINITI FX50

INFINITI Steering Gear Rack Power Pinion Fx 551-50538 Gear/rack

fits model: Fx50. make: Infiniti. year: 2010–2013.

551-50538 Infiniti Steering Gear/rack Power Rack And Pinion Fits 10-13 Fx Series 1997222

( Part Type: Steering Pinion Gear Rack ), ( Conditions Options: 02-10-23 ), ( Genuine Oem: Yes ), ( Ipn: 551-50538 ), ( Manufacturer Warranty: 90 Day )

Review INFINITI Steering Gear/rack Power Rack And Pinion Fx Series 1997 fits FX50 2010–2013

The **Infiniti 551-50538 Steering Gear/Power Rack Pinion (2010 2013 FX35/FX)** is a precision-engineered component designed to deliver seamless, responsive, and durable steering performance in Infiniti s front-wheel-drive luxury crossover models. This high-quality rack-and-pinion assembly serves as the backbone of the vehicle s steering system, translating driver input from the steering wheel into precise lateral movement of the front wheels with minimal effort and maximum accuracy. Crafted from robust, corrosion-resistant materials, the pinion shaft is machined to exacting tolerances, ensuring smooth engagement with the steering rack s internal teeth while maintaining optimal alignment and reducing play. The design incorporates a sealed, grease-filled housing to protect internal components from road debris, moisture, and contaminants, extending the lifespan of the assembly and preserving steering feel even under demanding conditions. Whether navigating tight city streets, winding mountain roads, or cruising on the highway, this steering rack pinion ensures a firm yet compliant connection between the driver and the vehicle, enhancing both control and comfort. Ideal for both original equipment replacement and performance-oriented upgrades, this part adheres to Infiniti s stringent engineering standards, guaranteeing compatibility with the FX35 s steering linkage, tie rods, and suspension components. Proper installation requires adherence to factory specifications, including correct torque settings and alignment checks, to prevent premature wear or steering inefficiencies. For owners seeking to restore their FX s handling dynamics or address symptoms of worn steering components such as excessive play, vague feedback, or unusual noises this genuine Infiniti part offers a reliable solution that restores the vehicle s intended driving character.

### **Pros and Cons of buying a Infiniti Q50 (551-50538) Steering Rack (2010-2013 FX)**

#### **Pros:**

1. **Direct Fitment** This part is specifically designed for the 2010-2013 Infiniti Q50 (FX series), ensuring compatibility without modifications.

2. **Improved Steering Feel** A new rack can eliminate play, stiffness, or excessive freeplay, providing a more responsive and precise steering experience.

3. **Prevents Further Damage** If the original rack is leaking fluid, worn internally, or failing, replacing it early can avoid costly engine or suspension damage from contaminated fluid or steering failure.

4. **OEM Quality** As an original equipment part, it meets Infiniti s engineering standards, offering durability and reliability.

5. **Warranty Coverage** If purchased from a reputable dealer or online retailer, it may come with a warranty, providing peace of mind.

6. **Better Safety** A failing steering rack can compromise handling and control, so replacing it ensures safer operation.

7. **Potential Resale Value** A well-maintained vehicle with a fresh steering rack may hold its value better than one with known mechanical issues.

#### **Cons:**

1. **High Cost** Steering racks are expensive, often ranging between **$800 $1,500 ** depending on source (OEM vs. aftermarket). Labor costs for installation can add another **$300 $600**, making the total repair significant.

2. **Potential Counterfeit Parts** Some sellers may offer fake or low-quality replicas, leading to premature failure. Always verify the part s authenticity.

3. **Installation Complexity** Replacing a steering rack requires removing the wheel, disconnecting tie rods, and often draining power steering fluid. If not done correctly, it can lead to misalignment or fluid leaks.

4. **Power Steering Fluid Compatibility** Some newer racks may require **ATF (Automatic Transmission Fluid)** instead of traditional power steering fluid, which could necessitate a fluid flush.

5. **Time-Consuming Repair** The job typically takes **2 4 hours**, depending on the mechanic s experience, which may require scheduling around your availability.

6. **Mixed Reviews on Aftermarket Alternatives** While OEM is ideal, some aftermarket racks (e.g., from **Akebono, TRW, or Meati**) offer similar performance at a lower cost, but quality varies.

7. **Hidden Issues** If the rack was damaged by a prior accident or improper installation, the problem may persist even after replacement.

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### **Ending Conclusion:**

Replacing the steering rack on a **2010 2013 Infiniti Q50 FX** is a **necessary repair** if the original unit is failing, as it directly impacts safety and drivability. The **OEM part (551-50538) is the safest choice**, though aftermarket options can be cost-effective if sourced carefully. The **high upfront cost and labor requirements** make this a significant investment, but it is a **preventative measure** that avoids more severe (and expensive) steering-related failures.

If the rack is **leaking, has excessive play, or makes grinding noises**, replacement should be prioritized. However, if the vehicle is **high-mileage or not a primary car**, weighing the cost against the risk may lead to a different decision.

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### **Final Recommendation:** - **If the rack is confirmed faulty (leaks, binding, or excessive freeplay):**

- **Buy the OEM part (551-50538) from a trusted dealer or reputable online seller** (e.g., **Infiniti Parts Center, RockAuto, or a local Infiniti specialist**).

- **Have it installed by a certified mechanic** with experience in Infiniti steering systems to ensure proper alignment and fluid compatibility.

- **Consider an aftermarket rack (e.g., Akebono or TRW) if budget is a concern**, but verify reviews and warranty coverage.

- **If the vehicle has high mileage or is not a daily driver:**

- **Assess whether the cost of repair justifies the vehicle s remaining value.** If the rack failure is minor (e.g., minor leaks), a temporary fix (sealant) or observation may be an option.

- **If keeping the car long-term, proceed with replacement** to avoid a sudden steering failure.

- **Always inspect the tie rods, bushings, and power steering system** during the repair to catch any related wear.

**Bottom Line:** For safety and long-term reliability, **replacing the steering rack is the best course of action** if it is failing. The OEM part is the most reliable choice, but thorough research and professional installation are key to a successful repair.

Details:

INFINITI FX SERIES 11-13 Power Rack and Pinion; 5.0L. Residential delivery is not included in the free shipping. INFINITI QX70 14 Power Rack and Pinion; 5.0L 8 cylinder. INFINITI FX SERIES 10 Power Rack and Pinion; 5.0L, from 1/10.

part #: fx50 prices

  • $460.00-$1013.75

specifications steragebo:

  • for models: Fx50
  • for makes: Infiniti
  • for years: 2010-2013
  • part type: Steering Pinion Gear Rack
  • conditions options: 02-10-23
  • genuine oem: Yes
  • ipn: 551-50538
  • manufacturer warranty: 90 Day

payments steragebo:

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

seller steragebo:

  • rating: 98.7%
  • # reviews: 6447
  • city: Riverview, Florida

general steragebo:

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

shipping steragebo:

  • class: Standard
  • service: UPS Ground
  • transit: 3-8 Days
  • cost: $0.00
  • carrier: UPS
  • type: Fixed

returns steragebo:

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

offer steragebo:

  • best offers: True
  • options: Ship-to-home
  • availability: In Stock
  • started: February 18, 2026
  • sold: 0
  • quantity: 1
for models: fx50, for makes: infiniti, for years: 2010-2013, part type: steering pinion gear rack, conditions options: 02-10-23, genuine oem: yes, manufacturer warranty: 90 day,
manufacturer: infiniti, category: auto parts > car truck parts accessories > steering suspension > gearboxes, rack pinions, sku: 18018880887941782,
Infiniti FX50 Is Similar To:
steragebo logo
2 offers $460.00–$1013.75 USD
  • Used. Offer #1 priced at $460.00 + $0.00 shipping estimate = $460.00* total. INFINITI QX70 14 Power Rack and Pinion; 5.0L (8 cylinder) INFINITI FX SERIES 10 Power Rack and Pinion; 5.0L, from 1/10.FREE SHIPPING
  • Used. Offer #2 priced at $1013.75 + $0.00 shipping estimate = $1013.75* total. Dealers often provide part numbers that are not physically marked on the part as they update part numbers for existing parts.FREE SHIPPING

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