MITSUBISHI 551.MS1K21 Power Steering Gear Rack Pinion Es 1.2L

( Manufacturer Part Number: 551.MS1K21 ), ( Type: Rack Pinion ), ( Manufacturer Warranty: 30 Days ), ( Performance Part: No ), ( Genuine Oem: Yes ), ( Color: Silver ), ( Fitment Make Model: Mitsubishi Mirage ), ( Donors Vin : Ml32auhj5mh011113 ), ( Warehouse Location: Tr4-c-35 ), ( Material: Steel )

Review MITSUBISHI Power Steering Gear Rack And Pinion Es Le 1.2l fits MIRAGE SE 2021

The **Mitsubishi 551.MS1K21 Power Steering Gear Rack and Pinion Assembly** is a precision-engineered component designed exclusively for the **2021 Mitsubishi Mirage ES, LE, and SE models equipped with the 1.2L turbocharged 4-cylinder engine (4A92)**. This high-performance steering system is a critical element in ensuring smooth, responsive, and accurate handling, delivering both reliability and durability for daily driving, highway cruising, and spirited maneuvering. Crafted from high-grade materials, including reinforced steel and corrosion-resistant coatings, the rack and pinion assembly is built to withstand the rigors of urban commuting, sharp turns, and varying road conditions while maintaining optimal alignment and steering feel. The **551.MS1K21** features a **serpentine rack design**, which enhances stability and reduces play in the steering column, providing a more direct and engaging driving experience. This assembly is engineered to seamlessly integrate with the vehicle s **electronic power steering (EPS) system**, ensuring precise torque control and minimal effort during low-speed parking or high-speed highway corrections. Whether replacing a worn-out original component or upgrading for improved performance, this OEM-quality gear rack and pinion assembly guarantees a perfect fit, eliminating leaks, excessive noise, or binding that can compromise steering responsiveness. With meticulous attention to Mitsubishi s exact specifications, this part is a direct replacement for the factory unit, offering the same level of performance and longevity as the original making it an essential choice for owners seeking to restore their Mirage s handling dynamics to factory specifications.

### **Pros and Cons of Buying a Used 2021 Mitsubishi Mirage ES/LE/SE 1.2L with the 551.MS1K21 Power Steering Gear Rack and Pinion**

1. **Fuel Efficiency** The 1.2L engine is known for its excellent fuel economy, often achieving around **35-40 MPG** in city and highway driving, making it ideal for commuters or budget-conscious buyers.

2. **Low Maintenance Costs** The 1.2L engine is relatively simple and reliable, with fewer moving parts compared to larger engines. Basic maintenance (oil changes, air filters) is inexpensive.

3. **Compact and Maneuverable** The Mirage is a subcompact car, making it easy to park in tight spaces and navigate city traffic. Its small size also contributes to lower insurance costs.

4. **Decent Safety Features** The 2021 model comes with standard safety equipment such as **stability control, traction control, and multiple airbags**. Some trims (like the SE) may include **blind-spot monitoring** and **rear cross-traffic alert**.

5. **Affordable Price** As a used car, the Mirage is likely priced lower than comparable sedans, making it an attractive option for those on a budget.

6. **Reliable Power Steering System** The **551.MS1K21 power steering gear rack and pinion** is a common and well-documented component. While not the most advanced, it is generally durable if properly maintained.

7. **Good Resale Value** Mitsubishi s smaller models hold their value reasonably well, especially compared to some domestic brands.

8. **Comfortable Interior** The cabin is well-insulated, reducing road noise, and the seating is decent for a car in this class. The infotainment system (if equipped) is user-friendly.

---

1. **Limited Power and Performance** The 1.2L engine produces only about **100-110 horsepower**, which means sluggish acceleration, especially when passing or merging. It may feel underpowered compared to competitors like the Toyota Yaris or Honda Fit.

2. **Rough Ride Quality** The Mirage has a **stiff suspension setup**, which can make road imperfections more noticeable. Long drives on rough roads may feel uncomfortable.

3. **Interior Quality** The cabin materials are **basic and plasticky**, lacking the premium feel of some rivals. The steering wheel and gear shift may feel cheap.

- **Oil consumption** (some owners report burning oil, requiring frequent top-ups).

- **Timing chain stretch** (if not maintained properly, it can cause misfires or engine damage).

- **Coolant leaks** (especially from the water pump or hoses).

- **Electrical gremlins** (infotainment system freezes, sensor failures).

- **Excessive play or stiffness** (indicating worn seals or fluid leaks).

- **Whining or grinding noises** (often due to low power steering fluid or a failing pump).

- **Leaks** (power steering fluid can seep from the rack, leading to poor steering response).

- **Difficulty in turning** (if the rack is seized or damaged).

6. **Limited Cargo Space** The Mirage has a **small trunk (around 10.6 cubic feet)**, which may be insufficient for larger items or family outings.

7. **Outdated Tech (in some trims)** Lower trims (ES/LE) may lack features like **Apple CarPlay/Android Auto**, **backup camera**, or **heated seats**, which are standard in newer or higher-end models.

8. **Resale Depreciation** While not as severe as some brands, Mitsubishi s smaller models still depreciate over time, meaning you may not recover much value if selling later.

9. **Limited Aftermarket Support** Finding parts or mechanics familiar with Mitsubishi s smaller models can be harder than for Toyota, Honda, or Hyundai.

10. **Noisy Cabin at High Speeds** Some owners report increased wind and road noise, especially on highways, due to the car s lightweight construction.

---

The **2021 Mitsubishi Mirage with the 1.2L engine and 551.MS1K21 power steering rack** is a **practical, fuel-efficient, and low-cost-to-own** vehicle, making it a strong choice for **budget-conscious buyers, city drivers, or those who prioritize economy over performance**. However, its **lack of power, stiff ride, and potential reliability issues (especially with the engine and power steering)** mean it may not be ideal for **long-distance drivers, families, or those who want a smoother, more refined experience**.

The **power steering rack is a common component**, but its condition should be **thoroughly inspected** before purchase **leaks, excessive play, or unusual noises** are red flags. If maintained well, it can last the life of the car, but neglect can lead to costly repairs.

---

You need a **cheap, fuel-efficient car** for **daily commuting or urban driving**.

You **don t require high performance** and are okay with **slow acceleration**.

You **plan to keep it for a short period** (3-5 years) and won t drive it excessively.

You **inspect the power steering rack and engine thoroughly** before purchasing (check for leaks, proper fluid levels, and smooth operation).

You **budget for potential maintenance** (oil changes, timing chain inspection, power steering fluid top-ups).

You **need a car for long trips or highway driving** (the ride and power are inadequate).

You **require a spacious interior or cargo area** (the Mirage is very compact).

You **want a premium feel or advanced safety tech** (the interior and features are basic).

You **find any signs of power steering issues** (leaks, grinding, or resistance in steering).

You **don t have access to a trusted mechanic** to perform a pre-purchase inspection.

- If you want **better reliability and comfort**, consider a **Toyota Yaris, Honda Fit, or Hyundai Accent**.

- If you **prioritize fuel efficiency and low cost**, the Mirage is still a **decent choice**, but **only if well-maintained**.

- If the **power steering rack shows signs of wear**, factor in **repair costs** (a replacement rack can cost **$300-$600 installed**).

**Final Verdict:** The **2021 Mirage is a solid budget car**, but its **weaknesses in power, comfort, and potential reliability issues** mean it s best suited for **specific buyers who prioritize cost savings over performance**. Always **get a pre-purchase inspection**, especially focusing on the **engine, power steering, and suspension**, before buying.

Details:

Installation Guidelines Match parts with existing ones before installation. 90-day warranty on major electrical parts. Fast, Secure shipping. From engines and transmissions to body panels, lighting, interior components, every part is carefully inspected ensure reliability, performance, value.

To reduce exposure, avoid breathing exhaust, limit idling, work in a well-ventilated area, and wash your hands or wear gloves when Servicing. Do not force installation if parts do match. Each part is carefully inspected to ensure proper functionality and reliability. Compatible with domestic and foreign vehicles.

Items should be packaged Securely to prevent damage during shipping.

part #: 551ms1k21 prices

• $99.50-$179.50

specifications steragebo:

• for models: Se, Mirage
• for makes: Mitsubishi
• for years: 2021
• mpn: 551.ms1k21
• type: Rack Pinion
• manufacturer warranty: 30 Days
• performance part: No
• genuine oem: Yes
• color: Silver
• fitment make model: Mitsubishi Mirage
• donors vin : Ml32auhj5mh011113
• warehouse location: Tr4-c-35
• material: Steel

seller steragebo:

• city: West Milford, New Jersey
• rating: 99.4%
• # reviews: 466

shipping steragebo:

• type: Fixed
• transit: 3-9 Days
• cost: $0.00
• class: Standard
• service: Standard

returns steragebo:

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

payments steragebo:

• wallet: Apple-pay
• other
• credit card: Diners-club

offer steragebo:

• options: Ship-to-home
• best offers: True
• sold: 0
• quantity: 1
• started: April 6, 2026
• availability: In Stock

general steragebo:

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

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