NISSAN Power Steering Rack Pinion 551-58124 Z31

( Part Type: Steering Pinion Rack ), ( Conditions Options: Boot Damaged Rust Finish Worn See Pi ), ( Genuine Oem: Yes ), ( Ipn: 551-58124 ), ( Year: 1985 ), ( Descriptionpartcondition: 84-86 Nissan 300zx Z31 Power Steering Rack And Pinion Assembly ), ( Manufacturer Warranty: 60 Day )

Review NISSAN Z31 Power Steering Rack And Pinion Assembly fits 300ZX 1984–1986

The **Nissan 551-58124 Power Steering Rack Pinion Assembly** is a critical component for the **1984-1986 Nissan 300ZX (Z31)**, ensuring precise and responsive steering control while maintaining the iconic handling dynamics that made this sports coupe legendary. This high-performance part is designed to replace the original rack-and-pinion assembly, which is prone to wear, leaks, and binding over time common issues exacerbated by aggressive driving, exposure to road salt, or neglect. Crafted to exacting specifications, the **551-58124** features a robust **aluminum housing** reinforced with precision-machined internal components, including a **steel pinion shaft** and **ball-screw mechanism**, which translates driver input into smooth, linear movement of the steering linkage. The assembly incorporates **sealed bearings and bushings** to minimize friction, reducing the effort required to turn the wheel while extending the lifespan of the system. For enthusiasts seeking to restore or upgrade their Z31, this aftermarket replacement is engineered to match or exceed OEM standards, often incorporating modern materials and manufacturing techniques to improve durability and reduce fluid leakage a persistent problem in the original units. Whether restoring a classic car to showroom condition or enhancing the performance of a daily driver, this power steering rack pinion assembly is an essential upgrade, ensuring reliable operation, improved steering feel, and peace of mind on the road or track.

### **Pros and Cons of Buying a Nissan 551-58124 (84-86 300ZX Z31) Power Steering Rack Pinion**

1. **Common and Well-Documented Part** This power steering rack pinion is a widely available aftermarket and OEM part, meaning you ll have no trouble finding replacements if needed. There are numerous repair guides, videos, and forums (like ZCarParts, eBay Motors, or Nissan parts specialists) that detail installation and troubleshooting.

2. **Affordable Replacement Cost** Compared to some high-performance or rare automotive parts, this rack pinion is relatively inexpensive. Prices typically range from **$100 $300** depending on whether you buy new, used, or aftermarket. Labor costs for replacement are also reasonable, especially if you re comfortable doing it yourself.

3. **Easy DIY Replacement** The Z31 s power steering rack is accessible and can be replaced with basic tools (jack, jack stands, socket set, and possibly a torque wrench). Many owners successfully swap it out in a few hours, saving on labor fees.

4. **Common Failure Point** Many 84-86 300ZX owners experience power steering rack leaks or binding, so this part is frequently replaced. Having a spare or knowing how to fix it is a common maintenance task for this generation.

5. **Aftermarket Support** There are aftermarket alternatives (e.g., **Motive Parts, Dorman, or local speed shops**) that offer improved or rebuilt versions, sometimes with better seals or longer warranties than OEM.

6. **Prevents Major Issues** A failing rack can lead to **hard steering, leaks, or even complete loss of power assist**. Replacing it early avoids more expensive problems like **tie rod wear, steering column damage, or fluid contamination**.

7. **Compatibility with Mods** If you ve modified your Z31 (e.g., lowered suspension, wider wheels, or performance upgrades), a fresh rack ensures smooth steering without binding issues.

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1. **Potential for Recurring Issues** Even after replacement, some aftermarket or lower-quality racks may still leak or wear out prematurely, especially if the seals degrade or the mounting points rust. OEM parts are more reliable but may be harder to find.

2. **Rust and Corrosion Risk** If your car has been exposed to salt, moisture, or poor storage, the rack s mounting points or seals may corrode over time, leading to leaks or binding. A thorough inspection is necessary before purchase.

3. **Labor-Intensive if DIY Unfamiliar** While the job is manageable, it requires **removing the steering column, tie rods, and sometimes the sway bar**, which can be tricky for beginners. Improper alignment after reinstallation can lead to **uneven tire wear or handling issues**.

4. **Used Parts May Have Hidden Damage** If buying a used rack, there s a chance it was **previously damaged or improperly stored**, leading to early failure. Inspect for **leaks, play in the pinion, or rust** before purchasing.

5. **Power Steering Fluid Compatibility** Using **incompatible fluid** (e.g., synthetic vs. conventional) can degrade seals faster. Always use **Nissan-approved PS fluid (or a high-quality synthetic alternative)** to extend rack life.

6. **Potential for Misalignment** If the rack isn t properly torqued or aligned after installation, it can cause **uneven tire wear, wandering, or a stiff steering feel**. Some owners report needing to **re-adjust the tie rods** post-installation.

7. **Limited Long-Term Reliability (OEM Parts)** Original Nissan racks from this era are known to **wear out over time**, especially if the car sees heavy use. Aftermarket rebuilds may offer better longevity but at a higher cost.

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The **Nissan 551-58124 power steering rack pinion (84-86 300ZX Z31)** is a **practical and cost-effective part to replace** if your car is experiencing **leaks, binding, or hard steering**. The pros **affordability, ease of replacement, and widespread availability** make it a smart investment for maintaining your Z31 s drivability. However, the cons **potential for recurring issues, rust risks, and DIY challenges** mean you should **inspect the part carefully, use quality fluid, and consider professional installation if unsure**.

If your rack is **failing or showing signs of wear**, replacing it is **highly recommended** to avoid worse problems down the road. If you re buying a used rack, **prioritize condition and source** (preferably from a trusted seller with a return policy). For long-term reliability, **aftermarket rebuilt racks** (like those from **Motive or local speed shops**) may be worth the extra cost.

- **If your rack is leaking or binding**, **replace it ASAP** it s an easy fix that prevents bigger steering issues.

- **Buy new or high-quality aftermarket** if possible to avoid early failure.

- **Use proper PS fluid** (Nissan PS or a compatible synthetic) to extend rack life.

- **If DIY is new to you**, consider **paying for professional installation** to ensure proper alignment.

- **Inspect for rust and damage** before purchasing a used rack.

**Verdict:** **Worth replacing** if needed just **source it wisely and maintain it properly** for smooth, long-term performance.

Details:

Engine and Transmission warranty covers the internal parts of engines transmissions to be free defects. 6711 Oak Crest Dr E. Mazda Nissan Heaven.

SHIPPING: Shipping is only for the lower 48 states. Fort Worth, TX 76140.

specifications steragebo:

• for models: 300zx
• for makes: Nissan
• for years: 1984-1986
• part type: Steering Pinion Rack
• conditions options: Boot Damaged Rust Finish Worn See Pi
• genuine oem: Yes
• ipn: 551-58124
• year: 1985
• descriptionpartcondition: 84-86 Nissan 300zx Z31 Power Steering Rack And Pinion Assembly
• manufacturer warranty: 60 Day

returns steragebo:

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

shipping steragebo:

• cost: $0.00
• type: Fixed
• class: Standard
• transit: 2-5 Days
• service: Standard

general steragebo:

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

payments steragebo:

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

offer steragebo:

• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock
• started: March 16, 2026

seller steragebo:

• # reviews: 10315
• city: Fort Worth, Texas
• rating: 99.7%

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