1. Steering Racks & Gear Boxes For Sale
  2. sku: 18367733768472663
  3. MAZDA 551-58164

MAZDA 551-58164 Power Steering Rack Pinion RX7 10568310

fits make: Mazda. year: 1986.

551-58164 Mazda Power Steering Rack And Pinion From 1986 Rx7 10568310

( Genuine Oem: Yes ), ( Ipn: 551-58164 ), ( Manufacturer Warranty: 60 Day ), ( Type: Rack Pinion )

Review MAZDA Power Steering Rack And Pinion From Rx7 fits 1986

The **Mazda 551-58164 Power Steering Rack and Pinion Assembly (Part #10568310)** is a precision-engineered component designed exclusively for the 1986 Mazda RX-7, ensuring seamless and responsive steering performance for this iconic sports car. This high-quality aftermarket replacement is meticulously crafted to match the original equipment specifications, delivering the same level of durability and reliability as the factory unit. The rack and pinion mechanism is built with robust materials, including hardened steel components for the pinion shaft and rack, which resist wear and corrosion while maintaining smooth operation over thousands of miles. The assembly features a sealed design to protect internal components from dust, moisture, and contaminants, reducing the risk of premature failure and extending the lifespan of the steering system. Compatible with the RX-7 s front-wheel-drive architecture, this rack and pinion assembly integrates effortlessly with the car s existing steering column, tie rods, and suspension components, ensuring proper alignment and steering feel. Whether restoring an original RX-7 or upgrading a classic model, this part is an excellent choice for enthusiasts seeking a direct-fit, performance-oriented solution that balances precision engineering with long-term dependability. Proper installation requires attention to torque specifications and alignment, but the result is a steering system that delivers the sharp, responsive feedback drivers expect from this legendary sports car.

### **Pros and Cons of Buying a Mazda 551-58164 Power Steering Rack Pinion (1986 RX-7, Part #10568310)**

#### **Pros:**

1. **Direct Fitment** This is an OEM (original equipment manufacturer) part designed specifically for the 1986 Mazda RX-7 (and some other models in the same generation). It ensures compatibility without requiring modifications, reducing the risk of installation issues.

2. **Reliability** Mazda s early power steering racks were known for durability, especially in the RX-7 s first generation. A genuine or high-quality aftermarket replica should maintain similar performance and longevity if properly maintained.

3. **Performance Benefits** The power steering rack controls the steering effort, and a functioning unit ensures smooth, responsive handling. A failing rack can make steering feel sluggish or require excessive effort, so replacing it improves drivability.

4. **Prevents Further Damage** Ignoring power steering issues (e.g., leaks, grinding noises, or excessive play) can lead to more severe problems, such as damage to the steering column, tie rods, or suspension components. Replacing the rack early can avoid costly repairs down the line.

5. **Resale Value** Keeping the RX-7 in good condition with original or high-quality aftermarket parts can help maintain its value, especially for collectors or enthusiasts who prioritize authenticity.

6. **Warranty Coverage** If purchasing from a reputable seller (e.g., a Mazda parts dealer or trusted online retailer), the part may come with a warranty, providing peace of mind against defects.

7. **Ease of Installation** While some RX-7 modifications can be complex, replacing the power steering rack is a relatively straightforward job for someone with basic mechanical skills. Many owners or mechanics can complete it in a few hours with the right tools.

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#### **Cons:**

1. **Cost** Genuine Mazda OEM parts can be expensive, especially for older models like the RX-7. The 551-58164 rack may cost between **$300 $600 or more**, depending on the seller and condition. Aftermarket replicas can be cheaper but may lack long-term reliability.

2. **Age and Wear** Even if the part is new, the RX-7 itself may have other aging components (e.g., worn bushings, leaking hoses, or a failing power steering pump) that could affect performance. A full inspection is recommended before purchase.

3. **Power Steering Fluid Compatibility** The RX-7 uses **Mazda ATF (Automatic Transmission Fluid)** or **PSF (Power Steering Fluid)**. Using the wrong fluid can damage seals and shorten the life of the rack. Ensure the system is flushed and refilled correctly.

4. **Potential Counterfeit Parts** Buying from unverified sellers (e.g., eBay, Craigslist, or untrusted online marketplaces) risks receiving a **counterfeit or low-quality replica**. Always verify the part s authenticity, especially if it s an aftermarket unit.

5. **Installation Challenges** While the rack itself is relatively easy to replace, the RX-7 s tight engine bay and unique mounting points (e.g., the rack s position relative to the subframe) can make installation tricky for inexperienced hands. Improper alignment or torque settings can lead to steering play or premature wear.

6. **Additional Costs** Beyond the rack itself, you may need to purchase:

- **Power steering hoses** (if leaking or cracked)

- **Mounting hardware** (some racks require new bolts or brackets)

- **Seals or gaskets** (to prevent leaks)

- **Fluid and filter** (for the power steering system)

7. **Limited Availability of OEM Parts** Mazda no longer produces OEM parts for the RX-7, so sourcing may require searching through used lots, junkyards, or specialized suppliers. Aftermarket parts may not match the fit or feel of the original.

8. **Potential for Hidden Issues** If buying a used rack, there s a risk of **internal damage** (e.g., worn teeth on the pinion, bent components, or seized bearings) that isn t visible from the outside. A used rack may save money but could lead to premature failure.

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### **Conclusion:**

Replacing the power steering rack on a 1986 RX-7 is a **necessary maintenance task** if the current unit is failing, as it directly impacts safety and drivability. The **551-58164 part (#10568310)** is a solid choice for those seeking reliability, but the decision depends on your priorities:

- **If you want the best long-term performance and don t mind the cost**, a **new OEM or high-quality aftermarket replica** (e.g., from **Mazda Parts, Speedhawk, or a trusted supplier**) is the safest option. Ensure the part is genuine and comes with a warranty.

- **If you re on a budget**, a **used rack from a reputable source** (e.g., a trusted seller with inspection photos) can save money, but **inspect it thoroughly** for wear or damage before purchasing.

- **If you re unsure about installation**, consider having a mechanic perform the replacement to avoid costly mistakes.

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### **Recommendation:**

1. **Verify the Part s Authenticity** If buying new, confirm it s an **OEM Mazda part** or a **well-reviewed aftermarket replica** (e.g., from **Speedhawk, Mazda Parts, or a specialty RX-7 supplier**). Avoid cheap no-name parts that may fail quickly.

2. **Check for Compatibility** Ensure the part number (#10568310) matches your RX-7 s specifications. Some early RX-7 models (especially those with the **2.6L engine**) may have slight variations in rack design.

3. **Inspect the Power Steering System** Before installing the new rack, check:

- **Power steering pump** (for leaks or wear)

- **Hoses and connections** (for cracks or damage)

- **Fluid level and condition** (dirty or burnt fluid can damage the new rack)

- **Steering column and linkages** (ensure no excessive play or binding)

4. **Consider a Full Fluid Flush** After installation, **flush the power steering system** with fresh Mazda ATF to remove contaminants and ensure smooth operation.

5. **Test Drive After Installation** After replacing the rack, take the RX-7 for a **test drive** to confirm:

- Steering feels **responsive and smooth** (no grinding or resistance).

- There are **no leaks** around the rack or hoses.

- The **steering wheel returns to center** properly.

6. **Document the Work** If keeping records for future reference (e.g., for resale or warranty purposes), note the part number, installation date, and any issues encountered.

---

### **Final Verdict:** **Worth the investment if:**

- The current rack is failing (leaking, grinding, or unresponsive).

- You prioritize **reliability and safety** over cost savings.

- You re confident in the **source of the part** (OEM or high-quality aftermarket).

**Avoid if:**

- You re buying a **cheap, unverified aftermarket part** with no warranty.

- You neglect to **inspect or service the rest of the power steering system**.

- You re not prepared for **additional costs** (hoses, fluid, labor if DIY isn t an option).

For most RX-7 owners, **replacing the power steering rack is a worthwhile upgrade** that significantly improves driving comfort and prevents further damage. Just ensure you source the part carefully and perform the installation correctly.

Details:

MAZDA RX7 89 Power Rack and Pinion; Con. MAZDA RX7 86-88 Power Rack and Pinion;. MAZDA RX7 89-91 Power Rack and Pinion; Cape, w/turbo. Labor and costs associated with part installation are not covered under warranty.

part #: 551-58164 price

  • $399.00

specifications steragebo:

  • for makes: Mazda
  • for years: 1986
  • genuine oem: Yes
  • ipn: 551-58164
  • manufacturer warranty: 60 Day
  • type: Rack Pinion

offer steragebo:

  • started: March 14, 2026
  • availability: In Stock
  • best offers: True
  • sold: 0
  • quantity: 1
  • options: Ship-to-home

payments steragebo:

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

general steragebo:

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

returns steragebo:

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

seller steragebo:

  • rating: 99.9%
  • city: Spokane, Washington
  • # reviews: 47393

shipping steragebo:

  • type: Fixed
  • class: Standard
  • transit: 3-5 Days
  • service: FedEx Ground / FedEx Home Delivery
  • carrier: FedEx
  • cost: $0.00
for makes: mazda, for years: 1986, genuine oem: yes, manufacturer warranty: 60 day, type: rack pinion,
manufacturer: mazda, category: auto parts > car truck parts accessories > steering suspension > gearboxes, rack pinions, sku: 18367733768472663,
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1 offer $399.00 USD
  • Used. Offer #1 priced at $399.00 + $0.00 shipping estimate = $399.00* total. NO TIE RODS NOT INCLUDED.FREE SHIPPING

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