JAGUAR MNA3891BB Xjr Power Steering Rack 64K

( Manufacturer Part Number: MNA3891BB ), ( Type: Rack Pinion Complete Unit ), ( Manufacturer Warranty: 3 Months ), ( Vintage Part: Yes ), ( Universal Fitment: No ), ( Country Of Origin: United Kingdom ), ( California Prop 65 Warning: Prop65 Warning )

Review JAGUAR Xjr Power Steering Rack Assembly Warranty #mna3891bb 64k fits XJ6 1995–1997

The **Jaguar MNA3891BB Power Steering Rack** for the **XJ6 and XJ-R models (1995 1997)** is a precision-engineered hydraulic steering component designed to deliver smooth, responsive, and reliable handling in one of Jaguar s most iconic mid-to-late '90s luxury sedans. This rack is a direct replacement for the original equipment (OEM) unit, meticulously crafted to match the exact specifications of Jaguar s MNA3891BB assembly, ensuring seamless integration with the vehicle s steering column, tie rods, and suspension system. Built with high-grade steel and reinforced internal components, the rack features a robust hydraulic system that maintains optimal pressure for effortless steering, even during high-speed maneuvers or tight urban driving. The design incorporates a durable rack-and-pinion mechanism, allowing for precise control and minimal play, which is critical for both the sporty XJ-R and the refined XJ6. This power steering rack is engineered to withstand the demands of daily driving, offering long-lasting durability while reducing the risk of leaks, binding, or premature wear common issues that plague aftermarket alternatives. Whether restoring a classic Jaguar to its former glory or upgrading an existing vehicle for enhanced performance and reliability, this OEM-quality rack ensures a perfect balance of luxury and driving dynamics. With its compatibility across the 1995 through 1997 model years, it serves as an ideal solution for enthusiasts and mechanics seeking a genuine, high-performance replacement that upholds Jaguar s legendary engineering standards.

### **Pros and Cons of Buying a Jaguar MNA3891BB XJ6/XJR Power Steering Rack (1995 1997)**

#### **Pros**

1. **Performance and Handling**

The MNA3891BB rack is a high-performance steering rack designed for Jaguar s XJ6 and XJR models, offering improved steering response, precision, and reduced play compared to stock units. It is often used in tuned or high-performance applications, making it a desirable upgrade for enthusiasts.

2. **Durability and Build Quality**

The rack is constructed from high-quality materials, including reinforced components and sealed bearings, which can enhance longevity if properly maintained. Many owners report that it holds up well under heavy use, especially when paired with a well-sorted suspension setup.

3. **Compatibility with Modifications**

This rack is commonly used in performance builds, including those with lowered suspension, wider tires, or increased engine power. Its robust design helps mitigate steering issues that can arise from aggressive modifications.

4. **Aftermarket Support**

The MNA3891BB is a well-documented part with a strong aftermarket presence. Replacement seals, bearings, and even rebuilt units are relatively easy to source, reducing long-term maintenance hassles.

5. **Aesthetic and Tuning Appeal**

For Jaguar enthusiasts, upgrading to this rack can enhance the car s sporty character, especially when paired with other performance parts. It is a popular choice for show cars and track-oriented builds.

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#### **Cons**

1. **Cost**

The MNA3891BB rack is not a cheap part. Prices can range from **$800 to $1,500 **, depending on whether it s new, used, or rebuilt. Installation labor (if not DIY) can add another **$200 $500**, making it a significant investment for a single component.

2. **Installation Complexity**

Replacing the power steering rack on a Jaguar XJ6/XJR requires **disconnecting the steering column, removing the steering linkage, and often relocating the driveshaft or subframe**. This is a labor-intensive job that demands mechanical skill or professional assistance.

3. **Potential for Wear Over Time**

While durable, the rack is not indestructible. If not properly lubricated or if seals fail, it can develop **leaks, stiffness, or excessive play**, especially in older units. Regular maintenance (e.g., checking power steering fluid levels and condition) is essential.

4. **Compatibility Issues**

Some owners report that the MNA3891BB may not fit perfectly in stock suspension configurations, particularly if the car has been modified with **lowering springs, poly bushings, or alignment changes**. Improper fitment can lead to **steering wander or binding**.

5. **Power Steering Fluid Requirements**

This rack typically requires **high-quality power steering fluid** (e.g., Mobil 1 or Castrol PSF) to function optimally. Using the wrong fluid can cause **seal damage, pump failure, or reduced performance**.

6. **Limited Stock Availability**

While aftermarket options exist, finding a **genuine OEM replacement** (if needed) can be difficult, as Jaguar has largely discontinued production of these parts for older models.

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### **Conclusion**

The **Jaguar MNA3891BB power steering rack (1995 1997)** is a **highly regarded upgrade** for enthusiasts looking to enhance steering feel, precision, and durability in their XJ6 or XJR. It is particularly valuable for **performance builds, lowered cars, or high-mileage vehicles** where stock steering components may be worn or inadequate.

However, the **high cost, installation difficulty, and maintenance requirements** make it a **non-starter for casual drivers or those on a tight budget**. It is best suited for **serious Jaguar owners who are committed to tuning their cars** and have the mechanical skill (or budget) to handle the installation and upkeep.

If you are considering this rack, **ensure your car s suspension and alignment are correct**, use **high-quality power steering fluid**, and **budget for potential future maintenance**. If you re not planning major modifications, a **rebuilt stock rack or a lower-cost aftermarket alternative** may be a more practical choice.

### **Recommendation**

- **Buy it if:** You are building a **performance or track-oriented Jaguar**, have experience with mechanical work, and are prepared for the **cost and effort** involved.

- **Avoid it if:** You are a **casual driver**, on a tight budget, or unwilling to invest in proper maintenance.

- A **rebuilt stock rack** (if the original is still functional).

- A **lower-cost aftermarket rack** (e.g., from **Steering Rack Solutions or Jaguar Performance Parts**).

- **Upgrading other suspension components** (e.g., poly bushings, sway bars) if steering issues stem from alignment or suspension wear.

Ultimately, this rack is a **premium choice** just ensure it aligns with your project s goals and budget.

Details:

This is a good used complete power steering rack for Jaguar XJR model's 1995 - 1997. This is an original unit coming from a 1997 Jaguar XJR with 64,000 miles.

part #: mna3891bb prices

• $189.00-$320.00

specifications steragebo:

• for models: Xj6
• for makes: Jaguar
• for years: 1995-1997
• mpn: Mna3891bb
• type: Rack Pinion Complete Unit
• manufacturer warranty: 3 Months
• vintage part: Yes
• universal fitment: No
• country of origin: United Kingdom
• california prop 65 warning: Prop65 Warning

returns steragebo:

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

payments steragebo:

• money order
• check
• credit card: Visa
• wallet: Apple-pay
• other
• cash

offer steragebo:

• options: Ship-to-home
• availability: In Stock
• started: May 9, 2026
• quantity: 1
• sold: 0

seller steragebo:

• # reviews: 2505
• rating: 99.6%
• city: Birmingham, Alabama

shipping steragebo:

• class: Standard
• service: UPS Ground
• cost: $55.00
• type: Fixed
• carrier: UPS
• transit: 4-10 Days

general steragebo:

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

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