NISSAN 551.DA1K21 Electric Power Steering Motor

( Part Type: Steering Motor ), ( Conditions Options: 5 Electric Assist Motor ), ( Genuine Oem: Yes ), ( Ipn: 551.da1k21 ), ( Year: 2021 ), ( Descriptionpartcondition: The Pictures Are Of The Exact Part You Will Recieve. This Is A Hi ), ( Manufacturer Warranty: 60 Day )

Review NISSAN Electric Power Steering Motor Oem fits ALTIMA 2019–2023

The **Nissan 551.DA1K21 Electric Power Steering Motor** is a precision-engineered component designed to deliver seamless, responsive, and efficient steering performance across the latest generations of the Nissan Altima, spanning model years from **2023 through 2019**. This high-performance steering motor is a critical element of Nissan s advanced **Electric Power Steering (EPS) system**, engineered to enhance driver engagement while reducing operational complexity. Built with Nissan s rigorous quality standards, this motor integrates a robust **brushless DC motor** paired with a sophisticated **gear reduction mechanism**, ensuring smooth, low-effort steering even under demanding driving conditions. The unit features a **compact yet durable design**, optimized for installation within the Altima s steering column, where it interfaces directly with the steering rack to provide precise torque assistance. Its **high-efficiency electrical system** minimizes power consumption while maximizing responsiveness, contributing to the vehicle s overall fuel efficiency and dynamic handling. The motor is equipped with **advanced diagnostics and self-regulating torque control**, allowing it to adapt instantly to varying driving speeds and road conditions, from tight urban maneuvers to highway stability. Compatible with the **2023, 2022, 2021, 2020, and 2019 Altima models** (including both **CVT and automatic transmission variants**), this steering motor is a direct-fit replacement for OEM failures, ensuring compatibility with Nissan s **EPS control modules and steering column assemblies**. Whether addressing issues like excessive steering effort, erratic feedback, or complete motor failure, this component restores the Altima s intended steering precision, offering drivers the confidence and control expected from Nissan s modern lineup. Built to withstand the rigors of daily driving, this motor is a testament to Nissan s commitment to reliability, blending cutting-edge technology with dependable performance for an elevated driving experience.

Buying a used or replacement **Nissan Altima Electric Power Steering (EPS) Motor (Part # 551.DA1K21)** for models from **2019 to 2023** can be a practical solution for restoring steering functionality, but it comes with several considerations. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Nissan Altima EPS Motor (551.DA1K21)**

1. **Compatibility and Fitment**

- The part is **directly compatible** with the specified Nissan Altima models (2019 2023), ensuring an exact fit without modifications. This reduces the risk of installation issues.

- Nissan s EPS motors are designed to integrate seamlessly with the vehicle s steering column and control module, minimizing wiring or software complications.

2. **Reliability of Nissan Parts**

- Nissan s OEM (Original Equipment Manufacturer) parts are engineered to meet the same quality standards as factory-installed components. This generally translates to **longer lifespan and fewer early failures** compared to aftermarket knockoffs.

- The motor is built to withstand the **torque and electrical demands** of the Altima s steering system, reducing the likelihood of premature wear.

3. **Warranty Coverage**

- Purchasing from an **authorized Nissan parts dealer, salvage yard, or reputable online retailer** may include a **limited warranty** (typically 12 24 months). This provides peace of mind in case of defects.

- Some used motors from certified pre-owned (CPO) sources may come with extended warranties.

4. **Performance Consistency**

- Unlike aftermarket alternatives that may vary in quality, the OEM EPS motor delivers **consistent steering feel and responsiveness**. This is critical for safety and driver comfort.

- The motor is calibrated to work harmoniously with the vehicle s **EPS control unit (ECU)**, ensuring smooth operation without erratic behavior.

5. **Ease of Installation**

- The installation process is **straightforward** for mechanics with basic automotive skills. Most Altima models require **disconnecting the battery, removing the steering column cover, and unbolting the old motor** before attaching the new one.

- Nissan provides **detailed service manuals** and part diagrams, making the job easier for DIYers.

6. **Prevents Further Damage**

- A failing EPS motor can **damage the steering column, rack, or ECU** if ignored. Replacing it proactively avoids **costlier repairs** down the line.

- Some drivers experience **warning lights (e.g., "Steering Assist Malfunction")** due to failing motors, which can lead to **towing expenses** if the issue isn t addressed.

7. **Resale Value Protection**

- For used Altima owners, fixing the EPS motor can **increase the vehicle s appeal** to potential buyers. A fully functional steering system is a **dealbreaker** for many purchasers.

---

### **Cons of buying a Nissan Altima EPS Motor (551.DA1K21)**

1. **High Upfront Cost**

- The **OEM EPS motor is expensive**, typically ranging from **$300 $600** depending on the source (new, used, or refurbished). This can be a significant investment for budget-conscious buyers.

- Additional costs may include **labor (if not DIY)**, **ECU reprogramming (if needed)**, or **replacement of accompanying components** (e.g., steering column bushings, wiring harness).

2. **Potential for Counterfeit or Damaged Used Parts**

- Buying from **unverified salvage yards or online marketplaces** risks receiving a **used motor that has been previously damaged or improperly stored**. This could lead to **early failure**.

- Some sellers may **misrepresent the condition** of the part, leading to disappointment after installation.

3. **ECU or Wiring Issues**

- If the **EPS control module or wiring harness** is damaged, replacing just the motor may not fully resolve the problem. A **diagnostic scan** is essential before purchase to ensure the ECU is functioning.

- In rare cases, the **new motor may not communicate properly** with the ECU, requiring a **reflash or replacement of the control unit**.

4. **Limited Availability of Refurbished Parts**

- While Nissan offers **refurbished OEM parts**, availability can be **limited**, especially for newer model years (2022 2023). This may force buyers to wait or pay premium prices.

- Some salvage yards may **not stock EPS motors**, requiring extra effort to source the part.

5. **DIY Installation Challenges**

- While the installation is **not extremely difficult**, it requires **basic mechanical skills and patience**. Mistakes such as **overtightening bolts or improper wiring connections** can lead to **steering misalignment or electrical issues**.

- **Safety risks** exist if the steering column is not properly secured during removal/installation.

6. **Potential for Recalls or Software Updates**

- Nissan occasionally releases **software updates** for EPS systems to improve performance or fix bugs. If the vehicle is **pre-2023**, it may not have the latest firmware, which could affect compatibility.

- Checking for **open recalls** on the vehicle is advisable before purchasing the part.

7. **Environmental and Ethical Concerns (Used Parts)**

- Purchasing a **salvage motor** contributes to **electronic waste** if the part is discarded later. Some buyers may prefer **new or refurbished** options to mitigate this.

---

### **Conclusion**

Buying the **Nissan Altima EPS Motor (551.DA1K21)** is a **practical and reliable solution** for restoring steering functionality in your vehicle, provided you source it from a **trusted dealer** and ensure the **ECU and wiring are in good condition**. The **pros outweigh the cons** for most owners, as the motor offers **OEM reliability, warranty coverage, and long-term performance**. However, the **high cost and potential for counterfeit parts** make it crucial to **verify the part s authenticity and condition** before purchase.

For **budget-conscious buyers**, aftermarket alternatives exist, but they may **lack durability and compatibility**. If the vehicle is **high-mileage or in poor condition**, it may be worth considering a **used Altima with a known good EPS system** instead of repairing.

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### **Recommendation**

- Purchase from **authorized Nissan dealers, reputable online retailers (e.g., RockAuto, CarQuest), or salvage yards with good reviews**.

- If buying used, **inspect the motor for physical damage, corrosion, or wear** before purchasing.

- Before buying, **scan the vehicle s ECU** for EPS-related trouble codes (e.g., P0501, P0502, P0503). If the ECU is faulty, it may need replacement.

- Inspect the **steering column, wiring harness, and connectors** for damage.

- If you lack mechanical experience, **have a trusted mechanic install the motor** to avoid costly mistakes.

- Brands like **Dorman, ACDelco, or MotiveParts** offer **high-quality aftermarket EPS motors** at a lower cost. However, **verify compatibility** and read reviews before purchasing.

- Ensure the part comes with a **transferable warranty** if selling the vehicle later.

- Keep records of the **part number, installation date, and any diagnostics performed** for future reference.

**Final Verdict:** For most **2019 2023 Nissan Altima owners**, the **OEM EPS motor (551.DA1K21) is the best choice** for reliability and longevity. However, **budget and part sourcing** should be carefully considered to avoid unnecessary expenses or failures. If the vehicle has **other major issues**, weighing the cost of the EPS repair against a **potential used replacement** may be wise.

Details:

Warranty: All parts come with our standard 60 day warranty. 5 ELECTRIC ASSIST MOTOR. It is stored in doors and ready to be shipped. Stock Number - 2566.

Donor Vehicle - 2021 ALTIMA. Steering motor.

specifications steragebo:

• for models: Altima
• for makes: Nissan
• for years: 2019-2023
• part type: Steering Motor
• conditions options: 5 Electric Assist Motor
• genuine oem: Yes
• ipn: 551.da1k21
• year: 2021
• descriptionpartcondition: The Pictures Are Of The Exact Part You Will Recieve. This Is A Hi
• manufacturer warranty: 60 Day

general steragebo:

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

payments steragebo:

• wallet: Paypal
• credit card: Visa
• other

offer steragebo:

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

returns steragebo:

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

seller steragebo:

• # reviews: 29590
• city: Sauk Centre, Minnesota
• rating: 99.7%

shipping steragebo:

• class: Expedited
• service: USPS Priority Mail
• cost: $0.00
• type: Fixed
• carrier: USPS
• transit: 3-8 Days

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