1. Steering Racks & Gear Boxes For Sale
  2. sku: 18197091242327751
  3. INFINITI 551-58772B

INFINITI 551-58772B Steering Gear Rack Power Pinion Front Gear/rack Q45

fits make: Infiniti. year: 1997–2001.

551-58772b Infiniti Steering Gear/rack Power Rack And Pinion Front Fits 97-01 Q45 280637

( Part Type: Steering Pinion Gear Rack ), ( Conditions Options: 4.1 ), ( Genuine Oem: Yes ), ( Ipn: 551-58772b ), ( Manufacturer Warranty: 90 Day )

Review INFINITI Steering Gear/rack Power Rack And Pinion Front Q45 fits 1997–2001

The **Infiniti Q45 (1997 2001) Steering Gear/Power Rack Pinion Assembly (Part #551-58772B)** is a critical component of the vehicle s front-wheel steering system, designed to deliver precise, responsive, and smooth directional control while ensuring durability under demanding driving conditions. This high-performance rack-and-pinion assembly is engineered specifically for the Q45 s 3.3L V6 engine platform, offering a compact yet robust solution that integrates seamlessly with the suspension and steering linkages. The pinion gear, a key element of this system, meshes directly with the steering rack to convert rotational motion from the steering wheel into linear movement, enabling the wheels to turn with minimal effort and maximum accuracy. Constructed from high-grade materials, including reinforced steel and precision-machined components, this rack is built to withstand the rigors of daily driving, including sharp turns, highway maneuvers, and off-road excursions, while maintaining optimal alignment and steering feel. The power-assisted design further enhances maneuverability, reducing the effort required to steer, especially at low speeds or during tight parking situations. Whether restoring a classic Q45 to its original glory or upgrading an existing vehicle for improved handling, this steering rack pinion assembly ensures reliability, longevity, and a driving experience that stays true to Infiniti s commitment to performance and refinement. Proper installation requires careful attention to alignment and torque specifications to guarantee optimal performance and safety.

### **Pros and Cons of Buying an Infiniti 551-58772B Steering Rack (Q45, 1997-2001)**

#### **Pros:**

1. **Direct Fitment** This is an OEM replacement part designed specifically for the Infiniti G20 (Q45) and its variants (1997-2001). It ensures proper alignment, functionality, and compatibility with the vehicle s steering system.

2. **Improved Steering Feel** A worn or damaged steering rack can cause sluggish, imprecise, or "mushy" steering. Replacing it with a new or high-quality used part restores proper steering response, making the car more responsive and safer to drive.

3. **Prevents Further Damage** Ignoring steering rack issues (e.g., leaks, excessive play, or internal wear) can lead to more severe problems, such as a seized rack, bent tie rods, or even a steering column failure. Replacing it early avoids costly repairs down the line.

4. **Reliability** The Q45 platform is known for its durability, and the steering rack, when in good condition, is a robust component. A new or well-maintained used rack ensures long-term reliability, especially if the vehicle is driven regularly.

5. **Cost-Effective Replacement** While not the cheapest part, a steering rack is significantly more affordable than a full steering column or frame repair. Purchasing a used OEM rack (like the one listed) can save hundreds compared to buying new.

6. **Compatibility with Aftermarket Upgrades** If you plan to modify your G20 (e.g., lowering, wider wheels, or suspension upgrades), a fresh steering rack ensures the steering system remains functional and safe under altered weight distributions.

7. **Ease of Installation** The Q45 steering rack is relatively straightforward to replace, especially for someone with basic mechanical experience. Many mechanics and DIYers can complete the job in a few hours with the right tools.

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#### **Cons:**

1. **Age and Wear of the Vehicle** The Q45 platform (1997-2001) is now over 20 years old, meaning the rest of the car may have accumulated wear. If other components (e.g., tie rods, bushings, or suspension) are degraded, they may need replacement alongside the rack.

2. **Potential for Hidden Damage** If purchasing a used rack, there s a risk of hidden internal wear, leaks, or corrosion. A used rack may not last as long as a new one, and some sellers may not disclose its full history.

3. **Labor Costs** While the part itself is affordable, labor for installation can be expensive, especially if you re not doing it yourself. Some mechanics charge $200 $400 for rack replacement, depending on location and shop rates.

4. **Limited Availability of Parts** As the G20 becomes rarer, finding compatible parts (e.g., tie rods, dust boots, or mounting hardware) can be challenging. Ensure you have all necessary components before starting the job.

5. **Risk of Counterfeit or Low-Quality Parts** If buying from an unverified seller, there s a chance of receiving a knockoff or poorly manufactured part. Always verify the part s authenticity and condition before purchasing.

6. **Steering Fluid Leaks** The rack relies on hydraulic pressure, so leaks (common in older racks) can occur if the seals or hoses are worn. A new rack should come with fresh seals, but if the existing lines are cracked, they may need replacement.

7. **Potential for Oversteering or Understeering Issues** If the rack is not properly aligned or if other steering components (e.g., tie rods, ball joints) are worn, replacing just the rack may not fully resolve handling issues.

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### **Ending Conclusion:**

Replacing the steering rack on a 1997-2001 Infiniti G20 (Q45) is a **highly recommended maintenance task** if the original rack is failing. The benefits improved steering feel, safety, and prevention of further damage far outweigh the risks, provided you source a quality part and address any accompanying wear in the steering system. However, the decision should be weighed against the vehicle s overall condition; if the car is already showing signs of extensive wear, a steering rack replacement alone may not be enough to justify its continued use.

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### **Recommendation:**

1. **Verify the Part s Condition** If buying used, inspect the rack for leaks, rust, or excessive play. Request a video or photos of the internal components if possible. Consider purchasing from a trusted seller (e.g., eBay with positive feedback, a reputable junkyard, or a parts specialist).

2. **Check for Accompanying Wear** Before installation, inspect and replace any worn tie rods, ball joints, steering column bushings, or suspension components. This ensures the steering system functions optimally after the rack swap.

3. **Consider a New or Rebuilt Part** If budget allows, a new OEM or aftermarket steering rack (e.g., from Dorman, ACDelco, or a trusted brand like Moog) provides peace of mind and longevity. Rebuilt racks are also a cost-effective alternative to used parts.

4. **DIY or Professional Installation?** If you have mechanical experience, installing the rack yourself can save money. However, if you re unsure, consult a mechanic to avoid misalignment or damage to other components.

5. **Test Drive After Installation** After replacing the rack, perform a thorough test drive to ensure the steering is smooth, responsive, and free of unusual noises or play. Adjust tie-rod ends if necessary for proper alignment.

6. **Maintain the Steering System** Regularly check steering fluid levels and condition, and inspect the rack and tie rods for leaks or wear. Address any issues promptly to extend the life of the new rack.

**Final Verdict:** **Proceed with the replacement** if the rack is confirmed to be faulty, but ensure the rest of the steering system is in good condition. This upgrade will significantly enhance your G20 s handling and safety.

Details:

The rack and pinion will come complete without accessories. This part attaches to the suspension of vehicle. All mounting brackets are in good condition and usable. 217 Speedway Rd, Geffen, SC 29340.

Help Message. Steering Gear/Rack Power Rack And Pinion Front Fits 97-01 INFINITI Q45 280637 This is in overall good condition. No expedited shipping options are available at this time.

part #: 551-58772b prices

  • $279.99-$300.00

specifications steragebo:

  • for makes: Infiniti
  • for years: 1997-2001
  • part type: Steering Pinion Gear Rack
  • conditions options: 4.1
  • genuine oem: Yes
  • ipn: 551-58772b
  • manufacturer warranty: 90 Day

offer steragebo:

  • best offers: True
  • sold: 0
  • started: March 3, 2026
  • availability: In Stock
  • quantity: 1
  • options: Ship-to-home

payments steragebo:

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

seller steragebo:

  • city: Gaffney, South Carolina
  • # reviews: 4548
  • rating: 98.9%

returns steragebo:

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

general steragebo:

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

shipping steragebo:

  • cost: $0.00
  • type: Fixed
  • transit: 3-7 Days
  • carrier: UPS
  • class: Standard, One-day, Expedited
  • service: Standard, Overnight, UPS 2nd Day Air
for makes: infiniti, for years: 1997-2001, part type: steering pinion gear rack, conditions options: 4.1, genuine oem: yes, manufacturer warranty: 90 day,
manufacturer: infiniti, category: auto parts > car truck parts accessories > steering suspension > gearboxes, rack pinions, sku: 18197091242327751,
Infiniti 280637 Is Similar To:
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2 offers $279.99–$300.00 USD
  • Used. Offer #1 priced at $279.99 + $0.00 shipping estimate = $279.99* total. This part attaches to the suspension of the vehicle. This Steering Gear/Rack Power Rack And Pinion Front Fits 97-01 INFINITI Q45 is in overall good condition.FREE SHIPPING
  • Used. Offer #2 priced at $300.00 + $0.00 shipping estimate = $300.00* total. INFINITI Q45 99-01 Power Rack and Pinion, Front; Base INFINITI Q45 97 Power Rack and Pinion, Front; from 12/96.FREE SHIPPING

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